阅读说明：本技术 天线结构和电子设备 (Antenna structure and electronic device ) 是由 王静松 于 2020-05-13 设计创作，主要内容包括：本公开是关于一种天线结构和电子设备。天线结构包括非金属框体；辐射体,所述辐射体悬浮于所述非金属框体内；SAR传感器,所述SAR传感器连接至所述辐射体,所述SAR传感器用于检测所述辐射体和用户之间的电容。(The present disclosure relates to an antenna structure and an electronic device. The antenna structure comprises a non-metal frame body; the radiator is suspended in the non-metal frame; the SAR sensor is connected to the radiator and used for detecting capacitance between the radiator and a user.)

1. An antenna structure, comprising:

a non-metallic frame body;

the radiator is suspended in the non-metal frame;

the SAR sensor is connected to the radiator and used for detecting capacitance between the radiator and a user.

2. The antenna structure of claim 1, further comprising:

the metal frame body, the metal frame body includes the opening, non-metal frame body with the irradiator all set up in the opening, just the metal frame body with the irradiator separation.

3. The antenna structure according to claim 1, characterized in that it comprises:

an antenna feed point;

the first elastic sheet is used for conducting the antenna feed point and the radiator.

4. The antenna structure of claim 3, further comprising:

the first isolation unit is used for isolating signal interference between the SAR sensor and the radiator.

5. The antenna structure of claim 4, wherein the first isolation unit comprises a first inductor and a first capacitor, the first inductor is connected in series between the radiator and the SAR sensor, one end of the first capacitor is grounded, and the other end of the first capacitor is connected between the SAR sensor and the first inductor.

6. The antenna structure according to claim 4, characterized in that the antenna structure further comprises:

the matching circuit is connected to the radio frequency front end and the radiator;

and one end of the second isolation unit is connected to the antenna feed point, and the other end of the second isolation unit is connected to the matching circuit.

7. The antenna structure of claim 6, wherein the matching circuit comprises a second inductor connected to ground, and wherein the second isolation unit comprises a second capacitor connected in series between the antenna feed point and the second inductor.

8. The antenna structure according to claim 4, characterized in that the antenna structure further comprises:

a radio frequency switch circuit, the radio frequency switch circuit being grounded;

and one end of the third isolation unit is connected to the radio frequency switch circuit, and the other end of the third isolation unit is connected to the radiator.

9. The antenna structure of claim 8, wherein the first isolation unit has one end connected to the SAR sensor and another end connected between the third isolation unit and the radiator.

10. The antenna structure according to claim 4, characterized in that one end of the first isolation unit is connected to the antenna feed point and the other end of the first isolation unit is connected to the SAR sensor.

11. The antenna structure of claim 8, wherein the third isolation unit comprises a third capacitor and a third inductor, the third capacitor is connected in series between the radio frequency switch circuit and the radiator, one end of the third inductor is grounded, and the other end of the third inductor is connected between the third capacitor and the radio frequency switch circuit.

12. An electronic device, comprising:

the antenna structure of any one of claims 1-11;

a processor for adjusting a transmit power of a radio frequency circuit of the antenna structure according to the capacitance value detected by the SAR sensor.

13. The electronic device of claim 12, comprising:

and the side frame is internally provided with the non-metal frame body and the radiator of the antenna structure.

Technical Field

The present disclosure relates to the field of terminal technologies, and in particular, to an antenna structure and an electronic device.

Background

With the increasing development of wireless communication technology, intelligent terminals have become an indispensable part of public life. In order to increase the antenna frequency band covered by the intelligent terminal, the number of antenna structures required to be configured in the intelligent terminal is increasing day by day, and higher requirements are put forward on the internal space of the intelligent terminal. With the development of 3G, 4G, 5G and other data networks, the antenna structure is increasingly complex, and the frequency band to be covered is also increasingly increased. Therefore, the radiation effect of the electromagnetic wave radiation of the intelligent terminal on the human body also becomes a problem which needs to be generally concerned in the industry.

Disclosure of Invention

The present disclosure provides an antenna structure and an electronic device to solve the disadvantages of the related art.

According to a first aspect of embodiments of the present disclosure, there is provided an antenna structure, comprising:

a non-metallic frame body;

the radiator is suspended in the non-metal frame;

the SAR sensor is connected to the radiator and used for detecting capacitance between the radiator and a user.

Optionally, the antenna structure further includes:

the metal frame body, the metal frame body includes the opening, non-metal frame body with the irradiator all set up in the opening, just the metal frame body with the irradiator separation.

Optionally, the antenna structure includes:

an antenna feed point;

the first elastic sheet is used for conducting the antenna feed point and the radiator.

Optionally, the antenna structure further includes:

the first isolation unit is used for isolating signal interference between the SAR sensor and the radiator.

Optionally, the first isolation unit includes a first inductor and a first capacitor, where the first inductor is connected in series between the radiator and the SAR sensor, one end of the first capacitor is grounded, and the other end of the first capacitor is connected to the SAR sensor and the first inductor.

Optionally, the antenna structure further includes:

the matching circuit is connected to the radio frequency front end and the radiator;

and one end of the second isolation unit is connected to the antenna feed point, and the other end of the second isolation unit is connected to the matching circuit.

Optionally, the matching circuit includes a second inductor connected to ground, and the second isolation unit includes a second capacitor connected in series between the antenna feed point and the second inductor.

Optionally, the antenna structure further includes:

a radio frequency switch circuit, the radio frequency switch circuit being grounded;

and one end of the third isolation unit is connected to the radio frequency switch circuit, and the other end of the third isolation unit is connected to the radiator.

Optionally, one end of the first isolation unit is connected to the SAR sensor, and the other end of the first isolation unit is connected between the third isolation unit and the radiator.

Optionally, one end of the first isolation unit is connected to the antenna feed point, and the other end of the first isolation unit is connected to the SAR sensor.

Optionally, the third isolation unit includes a third capacitor and a third inductor, the third capacitor is connected in series between the radio frequency switch circuit and the radiator, one end of the third inductor is grounded, and the other end of the third inductor is connected between the third capacitor and the radio frequency switch circuit.

According to a second aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including:

the antenna structure according to any of the embodiments above;

a processor for adjusting a transmit power of a radio frequency circuit of the antenna structure according to the capacitance value detected by the SAR sensor.

Optionally, the method includes:

and the side frame is internally provided with the non-metal frame body and the radiator of the antenna structure.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

according to the embodiment, the nonmetal frame body and the fixed radiating body are wrapped by the nonmetal frame body and are integrated into a whole, and the whole formed by the nonmetal frame body and the radiating body can be formed in a frame, a middle frame or a shell made of any material, so that the radiating body is prevented from occupying extra space. Furthermore, the SAR value detection is realized by arranging the SAR sensor connected with the radiating body, the adjustment of the SAR value of the antenna structure is facilitated, and the excessive radiation to a user is avoided.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic diagram illustrating an antenna structure according to an exemplary embodiment.

Fig. 2 is a schematic diagram illustrating another antenna structure according to an example embodiment.

Fig. 3 is a schematic diagram illustrating a further antenna structure according to an exemplary embodiment.

Fig. 4 is a schematic diagram illustrating a further antenna structure according to an exemplary embodiment.

Fig. 5 is a circuit schematic diagram illustrating an antenna structure according to an exemplary embodiment.

Fig. 6 is a circuit schematic diagram illustrating another antenna structure according to an example embodiment.

Fig. 7 is a circuit schematic diagram illustrating yet another antenna structure in accordance with an exemplary embodiment.

Fig. 8 is a schematic structural diagram of an electronic device according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

Fig. 1 is a schematic structural diagram of an antenna structure 100 according to an exemplary embodiment, as shown in fig. 1, the antenna structure 100 may include a radiator 2 and a non-metal frame 3, the radiator 2 is suspended in the non-metal frame 3, the same non-metal frame 3 may include one or more radiators 2, and when the same non-metal frame 3 wraps multiple radiators 2, any two radiators 2 do not contact with each other, so as to avoid affecting radiation of an antenna signal. The radiator 2 may be used to radiate an antenna signal of the antenna structure 100, for example, the antenna signal may include one or more of a 2G signal, a 3G signal, a 4G signal, a 5G signal, and a wifi signal.

The antenna structure 100 may further include a SAR sensor 4, the SAR sensor 4 being connected to the radiator 2 to detect a capacitance between the radiator 2 and the user through the SAR sensor 4, and a distance between the user and the antenna structure 100 may be estimated based on the capacitance detected by the SAR sensor 4 to adjust a transmission frequency of the antenna structure 100 when the distance between the user and the antenna structure 100 is close, thereby reducing a SAR value of the antenna structure 100 to fall within an allowable range.

According to the above embodiment, in the present disclosure, the non-metal frame 3 and the radiator 2 are limited to form a whole, and subsequently, the whole formed by the non-metal frame 3 and the radiator 2 can be formed in a frame, a middle frame or a shell made of any material, so that the radiator 2 is prevented from occupying extra space. Further, by arranging the SAR sensor 4 connected with the radiator 2, SAR value detection is realized, the adjustment of the SAR value of the antenna structure 100 is facilitated, and excessive radiation to a user is avoided.

In an embodiment, as shown in fig. 2, the antenna structure 100 may further include a metal frame 1, the metal frame 1 may include an opening 11, and the non-metal frame 3 may be connected to an inner side wall of the opening 11, that is, both the radiator 2 and the non-metal frame 3 may be disposed in the opening 11, so that there is no need to reserve a dedicated arrangement space for the radiator 2 inside the electronic device configured with the antenna structure 100, and the opening 11 may be a groove or a through hole penetrating through the metal frame 1. The non-metal frame body 3 can be formed by adopting an injection molding process based on a preset relative position relation between the metal frame body 1 and the radiator 2; or the metal frame 1 may be formed by using an MDA process, and a part of the metal frame 1 is wrapped by a nonmetal material so that the metal frame can be used as the radiator 2 to radiate the antenna signal, which may be designed as required, and the disclosure does not limit this.

In order to enrich the radiation frequency band of the antenna structure 100, the antenna structure 100 may include other radiators in addition to the radiator 2. For example, as shown in fig. 3, the metal frame 1 itself or a part of the metal frame 1 may be used as an antenna radiator, in fig. 3, an opening 11 may be opened in the part of the metal frame 1 that is used as the antenna radiator, and the metal frame 1 may be connected to an antenna feed point 13 to extend an antenna frequency band that can be covered by the antenna structure 100, and the metal frame 1 may further include a ground plate 14 and a second elastic piece (not shown), the ground plate 14 may be used to dispose a circuit board, a peripheral circuit of the antenna structure 100 may be burned on the circuit board, and the radiator 2 may be connected to a ground point on the circuit board through the second elastic piece.

In the above embodiments, as shown in fig. 4, the antenna structure 100 may further include an antenna feed point 12 and a first elastic sheet 5, where the first elastic sheet 5 may be used to connect the antenna feed point 12 and the radiator, so as to implement signal transmission between the radiator 3 and the antenna circuit.

In this embodiment, in order to avoid interference of the radiation signal of the radiator 2 on the operation signal of the SAR sensor 4, as shown in fig. 4, the antenna structure 100 may include a first isolation unit 6, one end of the first isolation unit 6 may be connected to the SAR sensor 4, the other end may be connected to the radiator 2, and the first isolation unit 6 may allow the low frequency signal (usually located in the frequency band of 120KHz to 140 KHz) of the operation of the SAR sensor 4 to pass through, but isolate the radio frequency signal of the radiator 2 from passing through.

To improve the antenna efficiency of the antenna structure 100, as shown in fig. 5, the antenna structure 100 may further include a matching circuit 7, and the matching circuit 7 may be connected to the rf front end and the radiator 2 of the antenna structure 100 to perform impedance matching on the received antenna signal and improve the antenna efficiency. In order to avoid interference between the signal of the matching circuit 7 and the signal of the SAR sensor 4, the antenna structure 100 may further include a second isolation unit 8, one end of the second isolation unit 8 is connected to the antenna feed point 12, and the other end is connected to the matching circuit 7, so that the SAR sensor 4 may be isolated from the ground signal in the matching circuit 7 by the second isolation unit 8, and normal detection of the SAR sensor 4 is prevented from being affected.

In still another embodiment, as shown in fig. 5, in order to increase the frequency band covered by the antenna structure 100, so that the electronic device configuring the antenna structure 100 can cover multiple frequency bands in the frequency bands of the 2G-5G signals as much as possible, the antenna structure 100 may further include the radio frequency switch circuit 9 and the third isolation unit 10, the radio frequency switch circuit 9 is grounded, and the frequency band of the electromagnetic wave radiated by the antenna structure 100 can be adjusted by adjusting the capacitance or the inductance connected to the radiator 2, so that the electromagnetic wave can cover multiple frequency bands in the 2G-5G signals. One end of the third isolation unit 10 is connected to the rf switch circuit 9, and the other end is connected to the radiator 2, so that the third isolation unit 10 can avoid mutual interference between the rf switch circuit 9 and the SAR sensor 4.

The SAR sensor 4 and the first isolation unit 6 have various connection modes based on the case where the antenna structure 100 includes at least one of the matching circuit 7 and the radio frequency switch circuit 9, which will be described below.

In an embodiment, still referring to fig. 5, one end of the first isolation unit 6 is connected to the SAR sensor 4, and the other end is connected to the antenna feed point 12, so that the SAR sensor 4 can be connected to the radiator 2 through the antenna feed point 12, the number of conductive wires led out from the radiator 2 can be reduced, and the influence on the radiation capability of the radiator 2 can be reduced.

In another embodiment, as shown in fig. 6, one end of the first isolation unit 6 is connected to the SAR sensor 4, and the other end is connected between the third isolation unit 10 and the radiator 2, that is, the SAR sensor 4 and the first isolation unit 6 can be connected to the radiator 2 in parallel with the third isolation unit 10, so that the number of conductive wires led out from the radiator 2 can be reduced, which is beneficial to reducing the influence on the radiation capability of the radiator 2.

In a further embodiment, as shown in fig. 7, the antenna structure 100 may further include a second elastic sheet (not shown), one end of the first isolation unit 6 may be connected to the SAR sensor 4, and the other end may be connected to the radiator 2 through the second elastic sheet, that is, the SAR sensor 4 and the first isolation unit 6 may be connected to the radiator 2 independently of the matching circuit 7 and the radio frequency switch circuit 9, which is beneficial to simplifying circuit difficulty.

In the above embodiments, as shown in any one of fig. 5 to 7, the first isolation unit 6 may include a first inductor 61 and a first capacitor 62, and the first inductor 61 may be connected in series between the radiator 2 and the SAR sensor 4, one end of the first capacitor 62 is connected to ground, and the other end is connected between the SAR sensor 4 and the first inductor 61. The first inductor 61 may allow a low frequency signal of the operation of the SAR sensor 4 to be transmitted to the radiator 2, while blocking a radio frequency signal from the radiator 2 and the matching circuit 7, and the first capacitor 62 may isolate the SAR sensor 4 from a system ground, and may filter the radio frequency signal, thereby ensuring that the operation of the SAR sensor 4 is not affected by the radio frequency signal.

Similarly, also in any of the embodiments shown in fig. 5-7, the matching circuit 7 may include a grounded second inductor 71, the second isolation unit 8 may include a second capacitor 81, the first capacitor is connected in series between the second inductor 71 and the antenna feed point 12, so that the SAR sensor 4 may be isolated from the ground point in the radio frequency front end and the ground point connected to the second inductor 71 by the second capacitor 81, and the second capacitor 81 may isolate the low frequency signal from the SAR sensor 4 while allowing the radio frequency signal from the matching circuit 7 to pass, so that the low frequency signal of the SAR sensor 4 may be prevented from affecting the operation of the matching circuit 7.

Similarly, also as in any of the embodiments shown in fig. 5-7, the third isolation unit 10 may include a third capacitor 101 and a third inductor 102, where the third capacitor 101 is connected in series between the rf switch circuit 9 and the radiator 2, one end of the third inductor 102 is grounded, and the other end is connected between the third capacitor 101 and the rf switch circuit 9. In this way, the third capacitor 101 can isolate the low-frequency signal from the SAR sensor 4, and at the same time can allow the radio-frequency signal from the radio-frequency switch circuit 9 to pass through, so as to prevent the low-frequency signal of the SAR sensor 4 from affecting the operation of the radio-frequency switch circuit 9.

Based on the technical solution of the present disclosure, as shown in fig. 8, the present disclosure further provides an electronic device 200, where the electronic device 200 may include the antenna structure 100 described in any of the above embodiments, and the electronic device 200 may further include a processor 201, where the processor 201 is configured to adjust a transmission power of a radio frequency circuit of the antenna structure 100 according to the capacitance value detected by the SAR sensor 4, so as to reduce the SAR value of the electronic device 200, which is beneficial to user health.

Further, the electronic device 200 may further include a side frame 202, and both the non-metal frame 3 and the radiator 2 may be disposed in the side frame 2, so as to prevent the radiator 2 from occupying an internal space of the electronic device 200, and meanwhile, may be beneficial to increasing a coverage frequency band of the electronic device 200, and optimize user experience. The side frame 202 may be a metal frame or a non-metal frame, and if the side frame 202 is a metal frame, the side frame 202 and the radiator 2 need to be isolated by the non-metal frame 3 to avoid signal interference. The electronic device 200 may include a mobile phone terminal, a tablet terminal or other communication terminal, which is not limited by the present disclosure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.