阅读说明：本技术 一种电磁隔离设备 (Electromagnetic isolation equipment ) 是由 林鹏 苏笛 钱辰 喻斌 于 2020-05-22 设计创作，主要内容包括：本公开涉及一种电磁隔离设备,包括：第一扼流部件,所述第一扼流部件包括多个第一扼流元件；以及连接部件,其中,所述多个第一扼流元件通过所述连接部件连接在一起。(The present disclosure relates to an electromagnetic isolation device comprising: a first choke means including a plurality of first choke elements; and a connecting member, wherein the plurality of first choke elements are connected together by the connecting member.)

1. An electromagnetic isolation device comprising:

a first choke means including a plurality of first choke elements; and

a connecting part is arranged on the base plate,

wherein the plurality of first choke elements are connected together by the connecting member.

2. The electromagnetic isolation device of claim 1, further comprising:

at least one second choke means comprising a plurality of second choke elements,

wherein the plurality of second choke elements are connected together by at least one of the plurality of first choke elements.

3. The electromagnetic isolation device according to claim 2, wherein a placement direction of the first choke means and a placement direction of the at least one second choke means are perpendicular to each other.

4. The electromagnetic isolation device according to claim 1 or 2, wherein the plurality of first choke elements are placed at a first interval and the plurality of second choke elements are placed at a second interval, the first interval and the second interval satisfyingWherein d represents the first interval or the second interval, and λ is a wavelength of an electromagnetic wave to be isolated.

5. The electromagnetic isolation device according to claim 4, wherein a thickness of any one of the plurality of first choke elements and the plurality of second choke elements satisfiesWhere t represents the thickness of any one of the first choke elements or the thickness of any one of the second choke elements.

6. The electromagnetic isolation device of claim 5, wherein the plurality of first choke elements have the same thickness and/or the plurality of second choke elements have the same thickness.

7. The electromagnetic isolation device according to claim 1, wherein a height of any one of the plurality of first choke elements and the plurality of second choke elements satisfies Wherein h represents the height of any one of the first choke elements or the height of any one of the second choke elements, λ is the wavelength of the electromagnetic wave to be isolated, and n is a positive integer.

8. Electromagnetic isolation device according to claim 7, wherein the plurality of first choke elements have the same height and/or the plurality of second choke elements have the same height.

9. The electromagnetic isolation device of claim 2, wherein an outer radius of an outermost second choke element of the plurality of second choke elements is less than or equal to an outer radius of a first choke element through which the plurality of second choke elements are connected together.

10. The electromagnetic isolation device of claim 1, wherein the device is positioned in at least one of:

the integrated access unit is placed on a bracket for connecting the access return integrated IAB access unit and the IAB mobile terminal;

the lower surface of the IAB access unit is placed; and

is placed on the upper surface of the IAB mobile terminal.

11. An electromagnetic isolation device comprising:

a transmitting antenna;

a receiving antenna;

a first choke means including a plurality of first choke elements;

a connecting member; and

the cavity body is provided with a cavity body,

wherein the plurality of first choke elements are connected to the transmitting antenna and the receiving antenna through the connecting member,

wherein the transmitting antenna, the receiving antenna, the first choke member, and the connecting portion are surrounded by a cavity without contact.

12. The electromagnetic isolation device of claim 11 wherein a portion of the cavity is comprised of at least one second choke component, the second choke component comprising a plurality of second choke elements.

13. The electromagnetic isolation device of claim 11, further comprising:

a choke wall completely surrounding the cavity without contact, a portion of the choke wall being composed of at least one third choke part including a plurality of third choke elements.

14. An electromagnetic isolation device as claimed in claim 12 or 13, wherein the direction of placement of the first choke means and the direction of placement of the at least one second choke means and/or the at least one third choke means are perpendicular to each other.

15. The electromagnetic isolation device of any one of claims 11-13, wherein the plurality of first choke elements are positioned at a first spacing, the plurality of second choke elements are positioned at a second spacing, and the plurality of third choke elements are positioned at a third spacing, the first spacing, the second spacing, and the third spacing being such thatWherein d represents one of the first interval, the second interval, and the third interval, and λ is a wavelength of an electromagnetic wave to be isolated.

16. The electromagnetic isolation device according to claim 15, wherein a thickness of any one of the plurality of first choke elements, the plurality of second choke elements, and the plurality of third choke elements satisfiesWherein t represents one of a thickness of any one of the first choke elements, a thickness of any one of the second choke elements, and a thickness of any one of the third choke elements.

17. Electromagnetic isolation device according to claim 16, wherein the plurality of first choke elements have the same thickness and/or the plurality of second choke elements have the same thickness and/or the plurality of third choke elements have the same thickness.

18. The electromagnetic isolation device according to claim 11, wherein a height of any one of the plurality of first choke elements, the plurality of second choke elements, and the plurality of third choke elements satisfiesWherein h represents one of a height of any one of the first choke elements, a height of any one of the second choke elements, and a height of any one of the third choke elements, λ is a wavelength of an electromagnetic wave to be isolated, and n is a positive integer.

19. Electromagnetic isolation device according to claim 18, wherein the plurality of first choke elements have the same height and/or the plurality of second choke elements have the same height and/or the plurality of third choke elements have the same height.

Technical Field

The present application relates to the field of wireless communication technologies, and more particularly, to an electromagnetic isolation device.

Background

The duplex mode of the conventional communication system is half duplex, and is mainly divided into a Time Division Duplex (TDD) mode and a Frequency Division Duplex (FDD) mode. TDD distinguishes uplink and downlink transmission by time domain, and FDD distinguishes uplink and downlink transmission by frequency domain. Both half-duplex approaches may avoid self-interference between transmit transmissions and transmission operations using the same device. However, since only transmission or reception is allowed on the same time/frequency domain resource in the two half duplex modes, the spectrum utilization of the system is low. To further improve the spectrum utilization of the system, a Co-frequency Co-time Duplex (CCFD) technique may be used. In theory, the spectrum utilization of the CCFD technique can be doubled compared to the half-duplex technique.

However, since in CCFD mode, the transmit and receive transmissions of the same device are simultaneously co-frequency, self-interference exists between the transmit and receive transmissions, and the strength of the self-interference may be much higher than the background noise. In order for the CCFD device to communicate properly, it is necessary to reduce the self-interference to the level of the bottom noise. Therefore, the key to CCFD communication is to effectively eliminate self-interference.

The current self-interference cancellation techniques mainly include: (1) antenna isolation techniques; (2) analog self-interference cancellation techniques, and (3) digital self-interference cancellation techniques. The antenna isolation technology (1) achieves the purpose of reducing the power of self-interference signals by using the physical isolation of antennas or the beam forming technology and the like; (2) analog self-interference cancellation techniques work before Analog-to-Digital converters (ADCs), reconstruct the self-interference signal using the Analog signal and subtract the reconstructed signal from the received signal; (3) the digital self-interference cancellation technique works after the ADC, and uses the digital signal to reconstruct the self-interference signal and subtracts the reconstructed signal from the received signal.

Current self-interference cancellation techniques still suffer from a number of drawbacks. First, limited by the dynamic range of the ADC, the sum of the antenna isolation and analog self-interference cancellation needs to be greater than a certain value to ensure that the quantization error of the effective signal received after the ADC is at the level of the noise floor. Moreover, after the receiving antenna captures the electromagnetic signal, the electromagnetic signal needs to pass through the low-noise amplifier and then enter another radio frequency circuit module including the analog self-interference cancellation module, and the low-noise amplifier also has a certain dynamic range, so that when the strength of the self-interference signal received by the receiving end is too large, saturation of the amplifier may be caused. Second, the analog self-interference cancellation module usually has limited performance due to its own drawbacks, such as speed and accuracy of self-interference channel tracking, and does not achieve strong cancellation capability. By combining the above two points, the structure and capability of antenna isolation need to be further optimized and improved.

Disclosure of Invention

The present disclosure has been made in view of the above problems.

According to an aspect of the present disclosure, there is provided an electromagnetic isolation device comprising: a first choke means including a plurality of first choke elements; and a connection part, wherein the plurality of first choke elements are placed at a first specific interval and electrically connected together by the connection part so that the plurality of first choke elements are common-grounded.

Further, an electromagnetic isolation device according to an aspect of the present disclosure further includes: at least one second choke part including a plurality of second choke elements, wherein the plurality of second choke elements are placed at a second specific interval and electrically connected together through at least one of the plurality of first choke elements such that the plurality of second choke elements are common-grounded.

Further, an electromagnetic isolation device according to an aspect of the present disclosure, wherein a placement direction of the first choke member and a placement direction of the at least one second choke member are perpendicular to each other.

Further, an electromagnetic isolation device according to an aspect of the present disclosure, wherein the first specific interval and the second specific interval satisfyWherein d represents the first specific interval or the second specific interval, and λ is a wavelength of an electromagnetic wave to be isolated.

Further, an electromagnetic isolation device according to an aspect of the present disclosure, wherein a thickness of any one of the plurality of first choke elements and the plurality of second choke elements satisfiesWherein t represents any one ofThe thickness of the first choke element or the thickness of any of the second choke elements.

Further, an electromagnetic isolation device according to an aspect of the present disclosure, wherein the plurality of first choke elements have the same thickness, and/or the plurality of second choke elements have the same thickness.

Further, an electromagnetic isolation device according to an aspect of the present disclosure, wherein a height of any one of the plurality of first choke elements and the plurality of second choke elements satisfies Wherein h represents the height of any one of the first choke elements or the height of any one of the second choke elements, λ is the wavelength of the electromagnetic wave to be isolated, and n is a positive integer.

Furthermore, an electromagnetic isolation device according to an aspect of the present disclosure, wherein the plurality of first choke elements have the same height and/or the plurality of second choke elements have the same height.

Further, an electromagnetic isolation device according to an aspect of the present disclosure, wherein an outer radius of an outermost second choke element of the plurality of second choke elements is smaller than or equal to an outer radius of a first choke element through which the plurality of second choke elements are electrically connected together.

Further, an electromagnetic isolation device according to an aspect of the present disclosure, wherein the device is placed in at least one of: the integrated access unit is placed on a bracket for connecting the access return integrated IAB access unit and the IAB mobile terminal; the lower surface of the IAB access unit is placed; and on the upper surface of the IAB mobile terminal.

According to another aspect of the present disclosure, there is provided an electromagnetic isolation device comprising: a transmitting antenna; a receiving antenna; a first choke means including a plurality of first choke elements; a connecting member; a cavity, wherein the plurality of first choke elements are disposed at a first specific interval and electrically connected to the transmitting antenna and the receiving antenna through the connection part, wherein the transmitting antenna, the receiving antenna, the first choke part, and the connection part are surrounded by the cavity without contact.

Further, an electromagnetic isolation device according to another aspect of the present disclosure, wherein a part of the cavity is composed of at least one second choke part including a plurality of second choke elements arranged at a second specific pitch.

Further, an electromagnetic isolation device according to another aspect of the present disclosure further includes: a choke wall that completely surrounds the cavity without contact, a portion of the choke wall being composed of at least one third choke part including a plurality of third choke elements arranged at a third specific pitch.

Further, an electromagnetic isolation device according to another aspect of the present disclosure, wherein a placement direction of the first choke part and a placement direction of the at least one second choke part and/or the at least one third choke part are perpendicular to each other.

Further, an electromagnetic isolation device according to another aspect of the present disclosure, wherein the first specific interval, the second specific interval, and the third specific interval satisfyWherein d represents one of the first specific interval, the second specific interval, and the third specific interval, and λ is a wavelength of an electromagnetic wave to be isolated.

Further, an electromagnetic isolation device according to another aspect of the present disclosure, wherein a thickness of any one of the plurality of first choke elements, the plurality of second choke elements, and the plurality of third choke elements satisfiesWherein t representsOne of a thickness of one first choke element, a thickness of any one second choke element, and a thickness of any one third choke element.

Furthermore, an electromagnetic isolation device according to another aspect of the present disclosure, wherein the plurality of first choke elements have the same thickness, and/or the plurality of second choke elements have the same thickness, and/or the plurality of third choke elements have the same thickness.

Further, an electromagnetic isolation device according to another aspect of the present disclosure, wherein a height of any one of the plurality of first choke elements, the plurality of second choke elements, and the plurality of third choke elements satisfiesWherein h represents one of a height of any one of the first choke elements, a height of any one of the second choke elements, and a height of any one of the third choke elements, λ is a wavelength of an electromagnetic wave to be isolated, and n is a positive integer.

Furthermore, an electromagnetic isolation device according to another aspect of the present disclosure, wherein the plurality of first choke elements have the same height, and/or the plurality of second choke elements have the same height, and/or the plurality of third choke elements have the same height.

Further, an electromagnetic isolation device according to another aspect of the present disclosure, wherein the electromagnetic isolation device operates as at least one of: an antenna cavity of the IAB-AU; and an antenna cavity of the IAB-MT.

Further, an electromagnetic isolation device according to another aspect of the present disclosure, wherein the electromagnetic isolation device operates as at least one of: the access unit is arranged outside the IAB access unit in a mode of surrounding the IAB access unit; and is installed outside the IAB mobile terminal in a manner of surrounding the IAB mobile terminal.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in more detail embodiments of the present disclosure with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure and not to limit the disclosure. In the drawings, like reference numerals generally refer to like parts or stages.

Fig. 1 shows a layout of functional entities of an Integrated Access and Backhaul (IAB) node in an IAB scenario;

FIG. 2 shows a top view of the electromagnetic isolation device described in the first embodiment;

FIG. 3 shows a side view of the electromagnetic isolation device described in the first embodiment;

FIG. 4 shows a schematic view of the installation of the electromagnetic isolation device described in the first embodiment;

FIG. 5 shows a top view of an electromagnetic isolation device described in the second embodiment;

FIG. 6 shows a cross-sectional view of an electromagnetic isolation device as described in the second embodiment;

FIG. 7 shows a top view of an electromagnetic isolation device described in the third embodiment;

FIG. 8 shows a cross-sectional view of an electromagnetic isolation device as described in the third embodiment;

FIG. 9 shows a side view of an electromagnetic isolation device described in the fourth embodiment;

FIG. 10 shows a cross-sectional view of an electromagnetic isolation device described in the fourth embodiment;

FIG. 11 shows a side view of an electromagnetic isolation device described in the fifth embodiment;

FIG. 12 shows another side view of the electromagnetic isolation device described in the fifth embodiment;

FIG. 13 shows a cross-sectional view of the chamber of an electromagnetic isolation device as described in the fifth embodiment;

FIG. 14 shows a side view of an electromagnetic isolation device described in the sixth embodiment;

FIG. 15 shows another side view of the electromagnetic isolation device described in the sixth embodiment;

FIG. 16 shows a cross-sectional view of the chamber of an electromagnetic isolation device described in the sixth embodiment;

fig. 17 shows a schematic view of the installation of the electromagnetic isolation device described in the sixth embodiment.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

In order to make the objects, technical solutions and advantages of the present disclosure more apparent, example embodiments according to the present disclosure will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of the embodiments of the present disclosure and not all embodiments of the present disclosure, with the understanding that the present disclosure is not limited to the example embodiments described herein.

In a full-duplex IAB scenario, an IAB node has two functional entities at the same time, which are a terminal functional entity communicating with other base stations and a base station functional entity providing services for other terminals or IAB nodes, respectively. To reduce interference between two functional entities, a widely discussed implementation of an IAB node is shown in fig. 1.

In the layout shown in fig. 1, three IAB base station functional entities (i.e., IAB access units, IAB-AUs) are placed on top of a light pole or a support, and beams of the three base station functional entities are directed to the ground and each cover a radiation range of 120 degrees, so as to realize omni-directional coverage in a cell. Meanwhile, a terminal function entity (i.e., an IAB mobile terminal, IAB-MT) is placed at the bottom end of a lamp pole or a support, and a beam is directed obliquely upward.

When the base station functional entity and the terminal functional entity perform data transmission on the same time-frequency resource, the transmitting devices of the three base station functional entities may generate self-interference to the receiving device of the terminal functional entity, for example, self-interference generated in any one or a combination of the following manners:

the electromagnetic waves radiated by each base station functional entity are likely to be received directly by the receiving means of the terminal functional entity (i.e. direct radiation);

the electromagnetic waves radiated by each base station functional entity may also be reflected/scattered by metal structures in the vicinity of the base station functional entity and then received by the receiving means of the terminal functional entity (i.e. secondary radiation);

the electromagnetic waves radiated by each base station functional entity may also impinge on a lamp pole or a support to form surface currents, and the surface currents propagate to the vicinity of the terminal functional entity to be received by the receiving device of the terminal functional entity;

the electromagnetic waves radiated by each base station functional entity may also form reflections/scatterings on metallic objects in the vicinity of the terminal functional entity, possibly by direct radiation, secondary radiation and surface waves, and then be received by the receiving means of the terminal functional entity.

It follows that in the construction of such a distributed multi-emitting device, there are many forms of electromagnetic radiation that exist, and possibly from multiple directions, and it is obviously not sufficient to suppress electromagnetic radiation in one direction only.

In view of the above problems, the following embodiments describe a multi-angle electromagnetic radiation device, which can achieve the isolation effect of the same-frequency electromagnetic interference while locating the transmitting device within a certain angle range, and improve the isolation performance.

First embodiment

A first embodiment describes an electromagnetic isolation device. Fig. 2 and 3 show top and side views of the structure of the electromagnetic isolation device described in the first embodiment.

The electromagnetic isolation device in the first embodiment includes:

(1) an annular metal choke plate group comprising at least one annular metal choke plate; and

(2) a metal ring.

The relationship between the two parts is that the annular metal choke plate group comprises all annular metal chokes which are coaxial with the metal ring, and the annular metal chokes are connected together by the coaxial metal ring so that all the annular metal chokes are common to the ground.

Next, the structures of the two parts will be described separately.

(1) Structure of annular metal choking plate group

When the annular metal choke plate group includes a plurality of annular metal chokes, the height of any one of the plurality of annular metal chokes, for example, the height h of the kth^(k)Is its protrusion height relative to the point of connection of the outer surface of the coaxial metallic ring, and can be expressed by the expression (1):

wherein the inner radii of the annular metal chokes are all r_innerAn outer radius of a kth annular metal choke plate of the plurality of annular metal choke plates is

A height of any one of the plurality of annular metal chokes, e.g., a height h of a kth^(k)The satisfied condition can be expressed as expression (2):

where λ is the wavelength of the electromagnetic wave to be isolated, n is a positive integer, and the value of n can be determined according to the specific isolation space requirement.

The outer radius of each of the plurality of annular metal chokes may be different or the same on the basis of satisfying the condition as described in expression (2). In another example of this embodiment, the outer radius of all the annular metal chokes is

A specific distance d between the kth annular metal choke plate and the adjacent annular metal choke plate in the plurality of annular metal choke plates^(k)The satisfied condition canExpressed as expression (4):

wherein the specific distance d^(k)Much smaller than half a wavelength. It is noted that "much less than" is for example one fifth in one example of this embodiment, i.e.,but is not limited to this specific value.

The intervals between the plurality of annular metal chokes may be different or the same on the basis of satisfying the condition as described in expression (4).

The thickness of any one of the plurality of annular metal chokes, for example, the thickness t of the kth^(k)The satisfied condition can be expressed as expression (5):

t^(k)＜＜d (5)

wherein a thickness of each of the plurality of annular metal chokes is substantially less than the specific spacing d. It is noted that "much less than" is for example one fifth in one example of this embodiment, i.e.,but is not limited to this specific value.

The thickness of each of the plurality of annular metal chokes may be different, or may be the same (for example,)。

(2) structure of coaxial metal ring

In one example of this embodiment, the outer surface of the coaxial metal ring is a cylindrical surface having the same radius as the inner ring of the annular choke, and the inner surface of the coaxial metal ring may have any shape. In order to ensure that the electromagnetic wave propagating on the coaxial metallic ring propagates in the form of a surface wave and to ensure ease of installation, the thickness of the coaxial metallic ring cannot be too thin, for example, the thinnest point of the thickness of the coaxial metallic ring is performed according to actual installation requirements under the condition described by expression (6):

b_min≥nλ (6)

wherein, b_minIs the thickness of the thinnest part of the coaxial metal ring, lambda is the wavelength of the electromagnetic wave to be isolated, n is a positive integer, and the value of n can be determined according to the specific isolation space requirement.

In the IAB scenario, the electromagnetic isolation device described in the first embodiment may be installed in one or a combination of the following installation manners:

-a stent connecting the IAB-AU and IAB-MT;

placed on one side of the IAB-AU, e.g. on the lower surface of the IAB-AU in close proximity thereto;

on one side of the IAB-MT, for example on the upper surface of the IAB-MT in a manner to abut against the IAB-MT.

Fig. 4 shows an example of mounting an electromagnetic isolation device in an IAB scenario, in which only one IAB-AU and one IAB-MT are taken as examples for illustration, but it is understood that the actual mounting method is not limited thereto.

By placing such an electromagnetic wave isolation device between the transmitting and receiving devices, direct electromagnetic radiation from the transmitting device to the receiving device can be effectively blocked, and secondary radiation formed by reflection or scattering of electromagnetic waves transmitted by the transmitting device by nearby metal objects can also be effectively blocked. Furthermore, the structure of the thread-type annular metal choke plate can effectively improve the suppression of the surface current formed by irradiating on the metal plate, thereby greatly improving the electromagnetic radiation between the transceiver devices.

Second embodiment

A second embodiment describes an electromagnetic isolation device. Fig. 5 and 6 show a top view and a cross-sectional view of the structure of the electromagnetic isolation device described in the second embodiment.

The electromagnetic isolation device in the second embodiment includes:

(1) a set of metal chokes comprising at least one metal choke; and

(2) a metal plate.

The relationship between the two parts is that, for example, the centers of the circles of all the metal choke rings included in the metal choke ring group are coincident, and the bottoms of the metal choke rings are connected together by a metal plate so that all the metal choke rings are grounded.

Next, the structures of the two parts will be described separately.

(1) Structure of metal choking ring group

When the metal choke ring group comprises a plurality of metal choke rings, the height of any one of the metal choke rings, such as the height h of the kth^(k)Is its raised height relative to the connection point on the metal plate.

The height of any one of the plurality of metal choke rings, such as the height h of the kth^(k)The satisfied condition is as shown in expression (2).

The height of each of the plurality of metal choke rings may be different or the same on the basis of satisfying the condition as described in expression (2). In one example of this embodiment, all of the metal choke rings are of a height

A specific distance d between the kth metal choke ring and the adjacent previous metal choke ring in the plurality of metal choke rings^(k)Can be expressed as expression (7):

wherein an inner radius of a kth metal choke ring of the plurality of metal choke rings isThe outer radius of the (k-1) th metal choke ring in the plurality of metal choke rings is

The specific interval d^(k)The satisfied condition is as shown in expression (4). The intervals between the plurality of metal choke rings may be different or the same on the basis of satisfying the condition as described in expression (4).

A thickness of any one of the plurality of metal choke rings, e.g., a thickness t of a kth^(k)May be expressed by expression (8):

wherein an inner radius of a kth metal choke ring of the plurality of metal choke rings isThe k-th metal choke ring of the plurality of metal choke rings has an outer radius of

A thickness of any one of the plurality of metal choke rings, e.g., a thickness t of a kth^(k)The satisfied condition is as shown in expression (5).

The thickness of each of the plurality of metal choke rings may be different, or may be the same (for example,)。

(2) structure of metal plate

In the design of the metal plate, reference may be made to the technical solution of the thickness of the coaxial metal ring in the first embodiment with respect to the design of the thickness thereof.

The electromagnetic isolation device of the second embodiment is installed in the same manner in the IAB scenario as the first embodiment, as shown in fig. 4.

By placing such an electromagnetic wave isolation device between the transmitting and receiving devices, direct electromagnetic radiation from the transmitting device to the receiving device can be effectively blocked, and secondary radiation formed by reflection or scattering of electromagnetic waves transmitted by the transmitting device by nearby metal objects can also be effectively blocked. Furthermore, the structure of the thread-type metal choke ring can effectively improve the suppression of the surface current formed on the metal plate by irradiation, thereby greatly improving the electromagnetic radiation between the transceiver devices.

Third embodiment

The third embodiment describes an electromagnetic wave isolation device. Fig. 7 and 8 show a top view and a cross-sectional view of the structure of the electromagnetic isolation device described in the third embodiment.

The electromagnetic isolation device in the third embodiment includes:

(1) an annular metal choke plate group comprising at least one annular metal choke plate;

(2) a set of metal chokes comprising at least one metal choke; and

(3) a metal ring.

In the technical solutions of the isolation device described in the third embodiment, the technical solution of the combination of the annular metal choke plate group and the metal ring may refer to the related technical solution in the first embodiment, and the technical solution of the metal choke plate group may refer to the related technical solution in the second embodiment. In contrast, in the second embodiment, the bottom portions of all the metal choke rings included in the metal choke ring group are connected together by the metal plate, and in the third embodiment, the metal plate is replaced by an outermost (e.g., uppermost) annular metal choke plate of the annular metal choke plate group. That is, in the third embodiment, the bottom portions of all the metal choke rings included in the metal choke ring group are electrically connected together by the outermost (e.g., uppermost) annular metal choke plate of the annular metal choke plate group. The placement direction of the annular metal choke plate group is perpendicular to the placement direction of the metal choke plate group.

In fig. 8, the height h of the annular metal choke₁Thickness t₁A distance d₁The height h, the thickness t and the distance d of the annular metal choke plate are defined in a manner similar to the definition of the height h, the thickness t and the distance d of the annular metal choke plate in the first embodiment; height h of metal choke ring₂Thickness t₂A distance d₂Defined in a manner similar to the definition of the height h, thickness t, and spacing d of the metal choke ring in the second embodiment.

In the solution of the isolation device described in the third embodiment, an outer radius of a metal choke ring (for example, an outermost metal choke ring) having a largest radius among the plurality of metal choke rings is smaller than or equal to an outer radius of an annular metal choke plate (for example, an uppermost annular metal choke plate) connecting bottoms of the plurality of metal choke rings together.

The electromagnetic isolation device of the third embodiment is installed in the same manner in the IAB scenario as the first embodiment, as shown in fig. 4.

By placing such an electromagnetic wave isolation device between the transmission and reception devices, the isolation capability of the direct radiation and the secondary radiation from the transmission device to the reception device is the same as compared with an isolation device having only an annular metal choke plate, but the area of the screw-type surface increases due to the addition of the metal choke plate, and therefore the suppression capability of the surface current formed due to the electromagnetic wave irradiated on the metal plate is stronger.

The placement of such isolation means between the transceiving means provides enhanced isolation of both direct and secondary radiation and surface currents compared to isolation means having only metal choke loops.

Fourth embodiment

The fourth embodiment describes an electromagnetic wave isolation device. Fig. 9 and 10 show a side view and a cross-sectional view of the structure of an electromagnetic isolation device described in the fourth embodiment.

The electromagnetic isolation device in the fourth embodiment includes:

(1) an annular metal choke plate group comprising at least one annular metal choke plate;

(2) a first set of metal chokes comprising at least one first metal choke ring;

(3) a second set of metal chokes, the first set of metal chokes including at least one second metal choke; and

(4) coaxial metal rings as connecting members.

In the technical solutions of the isolation device described in the fourth embodiment, the technical solutions of the annular metal choke plate group and the metal ring may refer to the related technical solution in the first embodiment, and the technical solutions of the first and second metal choke ring groups may refer to the related technical solution in the second embodiment. In contrast, in the second embodiment, the bottom portions of all the metal choke rings included in the metal choke ring group are connected together by the metal plate, and in the third embodiment, the metal plate is replaced by the outermost annular metal choke plate of the annular metal choke plate group. That is, in the third embodiment, the bottoms of all the first metal choke rings included in the first metal choke ring group are electrically connected together by the uppermost annular metal choke plate of the annular metal choke plate group, and the bottoms of all the second metal choke rings included in the second metal choke ring group are electrically connected together by the lowermost annular metal choke plate of the annular metal choke plate group. The placing direction of the annular metal choke plate group is perpendicular to the placing direction of the first metal choke ring group and/or the placing direction of the second metal choke ring group.

In fig. 10, the height h of the annular metal choke plate₁Thickness t₁A distance d₁The height h, the thickness t and the distance d of the annular metal choke plate are defined in a manner similar to the definition of the height h, the thickness t and the distance d of the annular metal choke plate in the first embodiment; height h of first metal choke ring₂Thickness t₂A distance d₂And the height h of the second metal choke ring₃Thickness t₃A distance d₃Defined in a manner similar to the definition of the height h, thickness t, and spacing d of the metal choke ring in the second embodiment.

In the solution of the isolation device described in the fourth embodiment, for each of the first and second metal choke ring groups, an outer radius of a metal choke ring (for example, an outermost metal choke ring) having a largest radius among the plurality of metal choke rings is smaller than or equal to an outer radius of an annular metal choke plate that connects bottoms of the plurality of metal choke rings together.

The electromagnetic isolation device of the fourth embodiment is installed in the IAB scenario in the same manner as the first embodiment, as shown in fig. 4.

By placing such an electromagnetic wave isolation device between the transmitting and receiving devices, the ability to block direct radiation and secondary radiation from the transmitting device to the receiving device is the same as that of the isolation device in the third embodiment having only one set of metal choke rings, but the area of the screw-type structure is further increased due to the addition of one set of metal choke rings, and the ability to suppress surface current formed on the metal plate due to electromagnetic wave irradiation is further enhanced.

Fifth embodiment

The fifth embodiment describes an electromagnetic wave isolation device. Fig. 11 and 12 show two different angled side views of an electromagnetic isolation device as described in the fifth embodiment, and fig. 13 shows a cross-sectional view of an electromagnetic isolation device as described in the fifth embodiment.

The electromagnetic isolation device in the fifth embodiment includes:

(1) a transmitting antenna;

(2) a receiving antenna;

(3) a first choke means including a plurality of first choke elements;

(4) a connecting member; and

(5) a cavity.

The relationship between the above-mentioned portions is that the plurality of first choke elements are placed at a certain pitch and electrically connected to the transmitting antenna and the receiving antenna through the connecting member, wherein the transmitting antenna, the receiving antenna, the first choke member, the connecting portion are surrounded by a cavity without contact. A part of the cavity is composed of at least one second choke part including a plurality of second choke elements arranged at a second specific interval. The placement direction of the first choke member and the placement direction of the second choke member are perpendicular to each other.

For the related design of the first choke element, reference is made to the technical solutions of the first to fourth embodiments, which are not described herein again.

Next, the structure of the second choke member will be described.

In one example of the present embodiment, the second choke member is a metal choke plate group including a plurality of metal choke plates.

The height of any one of the plurality of metal chokes, such as the height h of the kth^(k)And is the height of the projection thereof with respect to the connection point on the cavity, and satisfies the condition shown in expression (2). The height of each of the plurality of metal chokes may be different or the same on the basis of satisfying the condition as described in expression (2). In one example of this embodiment, all of the metal chokes are at the same height

A specific distance d between the kth choke plate and the adjacent metal choke plate in the plurality of metal choke plates^(k)The satisfied condition is as shown in expression (4). The intervals between the plurality of metal chokes may be different or the same on the basis of satisfying the condition as described in expression (4).

The thickness of any one of the plurality of metal chokes, e.g. the thickness t of the kth^(k)The satisfied condition is as shown in expression (5). The thickness of each of the plurality of metal chokes may be different, or may be the same (for example,)。

in the IAB scenario, the electromagnetic isolation device described in the fifth embodiment may operate in place of a combination of one or more of the following cavities:

-an antenna cavity of an IAB access unit; and

-antenna cavity of IAB mobile terminal.

When the electromagnetic wave radiates outwards, a part of electromagnetic energy is radiated out along the cavity, and when the electromagnetic wave irradiates on the cavity, the electromagnetic wave also enters the cavity along the outer surface of the cavity. By adopting the cavity with the corrugated outer surface, when electromagnetic waves are transmitted along the cavity, the energy of the electromagnetic waves can be retained in the outer surface, so that the energy of the electromagnetic waves transmitted along the outer surface of the cavity is effectively reduced, and the isolation is improved.

Sixth embodiment

The sixth embodiment describes an electromagnetic wave isolation device. Fig. 14 and 15 show two different angled side views of an electromagnetic isolation device as described in the sixth embodiment, and fig. 16 shows a cross-sectional view of the electromagnetic isolation device as described in the sixth embodiment.

The electromagnetic isolation device in the sixth embodiment includes:

(1) a transmitting antenna;

(2) a receiving antenna;

(3) a first choke means including a plurality of first choke elements;

(4) a connecting member;

(5) a cavity; and

(6) a metal choke wall.

The relationship between the above-mentioned portions is that the plurality of first choke elements are placed at a certain pitch and electrically connected to the transmitting antenna and the receiving antenna through the connecting member, wherein the transmitting antenna, the receiving antenna, the first choke member, the connecting portion are surrounded by a cavity without contact. The choke wall entirely surrounds the cavity without contact, and a portion of the metal choke wall is composed of at least one third choke part including a plurality of third choke elements arranged at a third specific pitch. The placement direction of the first choke member and the placement direction of the third choke member are perpendicular to each other.

The design of the first choke element is referred to the design principle of the first to fourth embodiments, and will not be described herein.

Next, the structure of the third choke member will be described.

In one example of the present embodiment, the third choke member is a metal choke plate group including a plurality of metal choke plates.

The height of any one of the plurality of metal chokes, such as the height h of the kth^(k)Is its projection height with respect to the connection point on the choke wall, and satisfies the condition shown in expression (2). The height of each of the plurality of metal chokes may be different or the same on the basis of satisfying the condition as described in expression (2). In one example of this embodiment, all of the metal chokes are at the same height

A specific distance d between the kth choke plate and the adjacent metal choke plate in the plurality of metal choke plates^(k)The satisfied condition is as shown in expression (4). The intervals between the plurality of metal chokes may be different or the same on the basis of satisfying the condition as described in expression (4).

The thickness of any one of the plurality of metal chokes, e.g. the thickness t of the kth^(k)The satisfied condition is as shown in expression (5). The thickness of each of the plurality of metal chokes may be different, or may be the same (for example,)。

the height H of the metal choking wall is larger than the height H' of the cavity of the transceiver, and the specific value depends on the angle range of the region to be isolated. The larger the range of the region to be isolated, the larger the value of H.

In the IAB scenario, the electromagnetic isolation device described in the sixth embodiment may be installed in one or a combination of the following installation manners:

-outside the IAB-AU, e.g. in a way to surround the IAB-AU without contact;

-mounted outside the IAB-MT, e.g. in a manner to surround the IAB-MT without contact.

Fig. 17 shows an example of mounting an electromagnetic isolation device in an IAB scenario, in which only one IAB-AU is taken as an example for illustration, but it is understood that the actual mounting method is not limited thereto.

When electromagnetic waves are irradiated on the metal choke wall, the metal choke wall with the inner and outer corrugated surfaces can retain the energy of the electromagnetic waves between the metal chokes on the two sides of the metal choke wall, so that the isolation degree is effectively improved.

Those of ordinary skill in the art will appreciate that the structures of the various examples described in connection with the embodiments disclosed herein may be combined in any manner and that such combinations are within the scope of the present disclosure. It should be noted that the structure may be implemented in any reasonable shape, connection, combination, placement, and such combinations are within the scope of the present disclosure. For example, descriptions in this disclosure regarding directions such as "up" and "down" are not limiting, but may be interchanged with one another; as another example, descriptions in this disclosure with respect to numbers such as "first" and "second" are also not limiting, but are for purposes of distinction; for another example, the description of the cross-section in the various embodiments of the present disclosure refers to a cross-sectional view taken in a reasonable direction and cross-sectional line, and is not limited to a certain direction or cross-sectional line.

The foregoing describes the general principles of the present disclosure in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present disclosure are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present disclosure. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the disclosure is not intended to be limited to the specific details so described.

The block diagrams of devices, apparatuses, systems referred to in this disclosure are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".

It is also noted that in the systems and methods of the present disclosure, components or steps may be decomposed and/or re-combined. These decompositions and/or recombinations are to be considered equivalents of the present disclosure.

Various changes, substitutions and alterations to the techniques described herein may be made without departing from the techniques of the teachings as defined by the appended claims. Moreover, the scope of the claims of the present disclosure is not limited to the particular aspects of the process, machine, manufacture, composition of matter, means, methods and acts described above. Processes, machines, manufacture, compositions of matter, means, methods, or acts, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein may be utilized. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or acts.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the disclosure. Thus, the present disclosure is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the disclosure to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.