阅读说明：本技术 一种旋磁嵌入式微带环行器 (Gyromagnetic embedded micro-strip circulator ) 是由 张楠 刘振祥 余杰 于 2021-08-18 设计创作，主要内容包括：本发明的一个实施例公开了一种旋磁嵌入式微带环行器,包括：合金底板、旋磁基片、第一介质基板、第二介质基板、陶瓷垫片和永磁体；所述第二介质基板上设置有贯穿其上下表面的通孔,所述旋磁基片内嵌于第二介质基板的通孔中；所述旋磁基片的下表面和第二介质基板的下表面都固定于合金底板的上表面；第二介质基板的上表面与第一介质基板的下表面粘接；第一介质基板的上表面设置有微带电路图案；第二介质基板及旋磁基片的下表面设置有连续的金属膜。本发明通过将介质基片分层,把微带电路置于上层介质基片表面,不需要通过复杂的异质材料集成工艺即可有效的解决旋磁基片与介质基片分离后过渡处微带电路不连续的问题,实现了微波信号的连续传输。(One embodiment of the present invention discloses a gyromagnetic embedded microstrip circulator, which comprises: the device comprises an alloy bottom plate, a gyromagnetic substrate, a first medium substrate, a second medium substrate, a ceramic gasket and a permanent magnet; the second medium substrate is provided with a through hole penetrating through the upper surface and the lower surface of the second medium substrate, and the gyromagnetic substrate is embedded in the through hole of the second medium substrate; the lower surface of the gyromagnetic substrate and the lower surface of the second medium substrate are both fixed on the upper surface of the alloy bottom plate; the upper surface of the second dielectric substrate is bonded with the lower surface of the first dielectric substrate; the upper surface of the first dielectric substrate is provided with a microstrip circuit pattern; the lower surfaces of the second medium substrate and the gyromagnetic substrate are provided with continuous metal films. The invention can effectively solve the problem that the micro-strip circuit at the transition position is discontinuous after the gyromagnetic substrate and the medium substrate are separated by layering the medium substrate and arranging the micro-strip circuit on the surface of the upper medium substrate without a complex heterogeneous material integration process, thereby realizing the continuous transmission of microwave signals.)

1. A gyromagnetic embedded microstrip circulator is characterized by comprising:

the device comprises an alloy bottom plate, a gyromagnetic substrate, a first medium substrate, a second medium substrate, a ceramic gasket and a permanent magnet;

the second medium substrate is provided with a through hole penetrating through the upper surface and the lower surface of the second medium substrate, and the gyromagnetic substrate is embedded in the through hole of the second medium substrate;

the lower surface of the gyromagnetic substrate and the lower surface of the second medium substrate are both fixed on the upper surface of the alloy bottom plate;

the upper surface of the second dielectric substrate is bonded with the lower surface of the first dielectric substrate; the upper surface of the first dielectric substrate is provided with a microstrip circuit pattern; and continuous metal films are arranged on the lower surfaces of the second medium substrate and the gyromagnetic substrate.

2. The circulator of claim 1,

the lower surface of the gyromagnetic substrate and the lower surface of the second medium substrate are fixed on the upper surface of the alloy bottom plate in a gluing or welding mode.

3. The circulator of claim 1,

the lower surface of the ceramic gasket is fixed on the upper surface of the first dielectric substrate through glue joint.

4. The circulator of claim 1,

the lower surface of the permanent magnet is fixed on the upper surface of the ceramic gasket through glue joint.

5. The circulator of claim 1,

the first dielectric substrate and the second dielectric substrate are made of microwave ceramic materials or semiconductor materials.

6. The circulator of claim 1,

the through hole on the second medium substrate is realized by adopting a dry/wet etching processing mode, a laser processing mode or a mechanical drilling processing mode.

7. The circulator of claim 1,

and the upper surface and the lower surface of the gyromagnetic substrate are polished by a polishing technology.

8. The circulator of claim 1,

the continuous metal film is prepared on the lower surfaces of the second medium substrate and the gyromagnetic substrate in a vacuum coating and electroplating process mode.

9. The circulator of claim 1,

the microstrip circuit pattern is prepared on the upper surface of the first medium substrate in the process modes of vacuum coating, electroplating, photoetching and corrosion.

Technical Field

The invention relates to the technical field of microwave devices. And more particularly, to a gyromagnetic embedded microstrip circulator.

Background

The circulator can realize the transmission and the reception of microwave signals in a microwave receiving and transmitting system, and simultaneously isolates microwave signals transmitted reversely, thereby playing the roles of stabilizing and protecting a microwave transmitting circuit. With the development of microwave systems towards high integration degree, the microstrip circulator becomes an important branch of the circulator due to the structural characteristics of planarization and miniaturization, and is widely applied to the fields of radar, microwave communication, microwave measurement and the like.

At present, most of microstrip circulators use a single gyromagnetic material as a substrate, a continuous metal film is deposited on the lower surface of the substrate, and a microstrip circuit pattern is prepared on the upper surface of the substrate. The gyromagnetic material participates in the circulation of microwave signals and also serves as a matching medium in the matching microstrip line. In order to realize the miniaturization of the circulator, it is an important means to increase the dielectric constant of the substrate. However, the dielectric constant of a gyromagnetic material substrate is usually not more than 20, while ensuring the gyromagnetic properties of the substrate. In this case, the dielectric parameters of the gyromagnetic material can limit the size compression of the matching circuit in the microstrip circulator, which is not favorable for the miniaturization of the microstrip circulator.

In addition, the high-performance microwave integrated circuit puts higher requirements on the performance of a circulator, such as broadband, high power, low loss and the like, and the separation of the gyromagnetic material from the material at the bottom of the matching microstrip line is an important technical means for realizing the high-performance index. However, the problem caused by the discontinuity of the microstrip lines at the transition point when two heterogeneous materials are used for manufacturing devices is that microwave signals cannot be transmitted, so that an effective method for solving the problem is required.

Disclosure of Invention

The invention aims to provide a gyromagnetic embedded microstrip circulator. To solve at least one of the problems of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, the present invention provides a gyromagnetic embedded microstrip circulator, comprising:

the device comprises an alloy bottom plate, a gyromagnetic substrate, a first medium substrate, a second medium substrate, a ceramic gasket and a permanent magnet;

the second medium substrate is provided with a through hole penetrating through the upper surface and the lower surface of the second medium substrate, and the gyromagnetic substrate is embedded in the through hole of the second medium substrate;

the lower surface of the gyromagnetic substrate and the lower surface of the second medium substrate are both fixed on the upper surface of the alloy bottom plate;

the upper surface of the second dielectric substrate is bonded with the lower surface of the first dielectric substrate; the upper surface of the first dielectric substrate is provided with a microstrip circuit pattern; and continuous metal films are arranged on the lower surfaces of the second medium substrate and the gyromagnetic substrate.

In one particular embodiment of the present invention,

the lower surface of the gyromagnetic substrate and the lower surface of the second medium substrate are fixed on the upper surface of the alloy bottom plate in a gluing or welding mode.

In one particular embodiment of the present invention,

the lower surface of the ceramic gasket is fixed on the upper surface of the first dielectric substrate through glue joint.

In one particular embodiment of the present invention,

the lower surface of the permanent magnet is fixed on the upper surface of the ceramic gasket by gluing

In one particular embodiment of the present invention,

the first dielectric substrate and the second dielectric substrate are made of microwave ceramic materials or semiconductor materials.

In one particular embodiment of the present invention,

the through hole on the second medium substrate is realized by adopting a dry/wet etching processing mode, a laser processing mode or a mechanical drilling processing mode.

In one particular embodiment of the present invention,

and the upper surface and the lower surface of the gyromagnetic substrate are polished by a polishing technology.

In one particular embodiment of the present invention,

the continuous metal film is prepared on the lower surfaces of the second medium substrate and the gyromagnetic substrate in a vacuum coating and electroplating process mode.

In one particular embodiment of the present invention,

the microstrip circuit pattern is prepared on the upper surface of the first medium substrate in the process modes of vacuum coating, electroplating, photoetching and corrosion.

The invention has the following beneficial effects:

the invention provides a gyromagnetic embedded micro-strip circulator, which has the following advantages compared with the prior art: firstly, by layering the medium substrate and placing the micro-strip circuit on the surface of the upper medium substrate, the problem that the micro-strip circuit at the transition position is discontinuous after the gyromagnetic substrate and the medium substrate are separated can be effectively solved without a complex heterogeneous material integration process, and continuous transmission of microwave signals is realized; the dielectric substrate around the gyromagnetic substrate has no magnetic loss, so that the loss of the device can be reduced; thirdly, the working bandwidth and the bearing power of the device can be effectively improved through the separation of the gyromagnetic substrate and the medium substrate; and fourthly, the volume of the device can be greatly compressed by selecting the dielectric substrate material with high dielectric constant, and the miniaturization of the device is realized.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows a block diagram of a gyromagnetic embedded microstrip circulator according to an embodiment of the present invention.

Figure 2 illustrates a top view of a gyromagnetic embedded microstrip circulator according to one embodiment of the present invention.

Detailed Description

In order to make the technical solutions and advantages of the present invention clearer, the following will describe embodiments of the present invention in further detail with reference to the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "center", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only used for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the practice of the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention discloses a gyromagnetic embedded microstrip circulator, including:

the gyromagnetic device comprises an alloy bottom plate 4, a gyromagnetic substrate 1, a first medium substrate 2, a second medium substrate 3, a ceramic gasket 5 and a permanent magnet 6;

the second medium substrate is provided with a through hole penetrating through the upper surface and the lower surface of the second medium substrate, and the gyromagnetic substrate is embedded in the through hole of the second medium substrate;

the lower surface of the gyromagnetic substrate and the lower surface of the second medium substrate are both fixed on the upper surface of the alloy bottom plate; specifically, the lower surface of the gyromagnetic substrate and the lower surface of the second medium substrate are fixed on the upper surface of the alloy bottom plate in a gluing or welding mode.

The upper surface of the second dielectric substrate is bonded with the lower surface of the first dielectric substrate; the upper surface of the first dielectric substrate is provided with a microstrip circuit pattern. And continuous metal films are arranged on the lower surface of the second medium substrate and the lower surface of the gyromagnetic substrate, wherein the positions of the holes of the second medium substrate are excluded.

The continuous metal film is prepared on the lower surfaces of the second medium substrate and the gyromagnetic substrate in a vacuum coating and electroplating process mode.

The invention can effectively solve the problem that the micro-strip circuit at the transition position is discontinuous after the gyromagnetic substrate and the medium substrate are separated by layering the medium substrate and arranging the micro-strip circuit on the surface of the upper medium substrate without a complex heterogeneous material integration process, thereby realizing the continuous transmission of microwave signals.

In one embodiment, the lower surface of the ceramic spacer is fixed to the upper surface of the first dielectric substrate by gluing.

In a specific embodiment, the lower surface of the permanent magnet is fixed on the upper surface of the ceramic gasket by gluing.

In a specific embodiment, the first dielectric substrate and the second dielectric substrate are made of a microwave ceramic material or a semiconductor material. The microwave ceramic material is alumina, magnesium titanate or barium titanate and the like. The semiconductor material is silicon, germanium, silicon carbide, or the like, which is not limited in this respect.

In this embodiment, the through holes on the second dielectric substrate may be implemented by dry/wet etching, laser processing, or mechanical drilling. Therefore, the through holes can be machined and formed in various modes, and the selectivity of the machining mode is improved.

In one embodiment, the upper and lower surfaces of the gyromagnetic substrate are polished by a polishing technique.

In a specific embodiment, the microstrip circuit pattern is prepared on the upper surface of the first dielectric substrate by vacuum coating, electroplating, photoetching and etching.

In a specific embodiment, as shown in fig. 1 and 2, a gyromagnetic embedded microstrip circulator is provided, wherein the upper and lower dielectric substrates are made of ceramic materials with a dielectric constant of 30, the lower dielectric substrate is 0.5mm thick, the upper dielectric substrate is 0.7mm thick, the diameter of a circular through hole is 5mm, the diameter of a circular gyromagnetic substrate is 4.95mm, the thickness is 0.5mm, the dielectric constant is 13.5, and the saturation magnetization is 2000 Gs.

When the device is assembled, after the upper medium substrate and the lower medium substrate are adhered together, the gyromagnetic substrate is embedded into the circular through hole and welded on the alloy bottom plate, and then the ceramic gasket and the permanent magnet are adhered to the upper surface of the medium substrate.

The circulator provided by the invention works in a C-X wave band, can realize broadband work of 5GHz-10GHz, has a relative bandwidth of 66.7%, and has an insertion loss of less than 0.8 dB.

The invention provides a gyromagnetic embedded micro-strip circulator, which is characterized in that a medium substrate is layered, a micro-strip circuit is arranged on the surface of an upper medium substrate, and the problem of discontinuity of the micro-strip circuit at a transition position after separation of a gyromagnetic substrate and the medium substrate can be effectively solved without a complex heterogeneous material integration process, so that continuous transmission of microwave signals is realized; and the medium substrate around the gyromagnetic substrate has no magnetic loss, so that the loss of the device can be reduced, and in addition, the size of the device can be greatly reduced by selecting a high-dielectric-constant medium substrate material, so that the miniaturization of the device is realized, and the device also has the advantages of ultra wide band and high power.

It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.