阅读说明：本技术 一种波导结型铁氧体开关 (Waveguide junction type ferrite switch ) 是由 欧阳伟铭 于 2019-08-26 设计创作，主要内容包括：本发明公开一种波导结型铁氧体开关,包括器体,器体侧面具有三个端口,所述三个端口向内凹陷并延伸至相互连通形成Y型波导腔,Y型波导腔的中心由上至下依次设置形状均为Y型的第一垫片、铁氧体和第二垫片,Y型铁氧体具有三个分别指向三个端口的凸起部,每个凸起部的端面设置有隔片,三个凸起部均开设有通孔,通孔内设置有介质管,激励线圈穿过介质管后,从波导腔的侧壁穿出器体与驱动电路连接。本发明通过三个介质管固定波导腔内的激励线圈,能够使得波导腔内的激励线圈保持在波导H面上,这样可以消除激励线圈对微波能量的耦合,即消除因微波能量的耦合带来的微波损耗,同时能够使得微波能量更加向腔体中心集中,便于实现器件的小型化。(The invention discloses a waveguide junction type ferrite switch, which comprises a body, wherein three ports are arranged on the side surface of the body, the three ports are inwards recessed and extend to be communicated with each other to form a Y-shaped waveguide cavity, a first gasket, ferrite and a second gasket which are Y-shaped are sequentially arranged at the center of the Y-shaped waveguide cavity from top to bottom, the Y-shaped ferrite is provided with three convex parts which respectively point to the three ports, a spacer is arranged on the end surface of each convex part, through holes are formed in the three convex parts, a medium tube is arranged in each through hole, and an excitation coil penetrates through the medium tube and then penetrates out of the body from the side wall of the waveguide cavity to be connected with a driving. The invention fixes the exciting coil in the waveguide cavity by the three dielectric tubes, so that the exciting coil in the waveguide cavity is kept on the H surface of the waveguide, thereby eliminating the coupling of the exciting coil to the microwave energy, namely eliminating the microwave loss caused by the coupling of the microwave energy, simultaneously concentrating the microwave energy to the center of the cavity, and facilitating the realization of the miniaturization of the device.)

1. the utility model provides a waveguide junction type ferrite switch, includes the ware body, its characterized in that, the ware body side has the three port that is used for installing the waveguide, three port inwards caves in and extends to intercommunication each other and forms Y type waveguide cavity, the center in Y type waveguide cavity sets gradually first gasket, ferrite and the second gasket that the shape is the Y type from top to bottom, Y type ferrite has three directional respectively the bellying of three port, every the terminal surface of bellying is provided with the spacer, the through-hole has all been seted up to three bellying of ferrite, be provided with the medium pipe in the through-hole, excitation coil passes behind the medium pipe, follow the lateral wall in waveguide cavity is worn out the ware body and is connected with drive circuit.

2. The waveguide junction ferrite switch of claim 1, wherein there are three dielectric tubes disposed in the through holes of the three protrusions of the ferrite.

3. The waveguide junction ferrite switch of claim 2, wherein the via is disposed perpendicular to the sides of the ferrite boss.

4. The waveguide junction ferrite switch of claim 2, wherein the length of the dielectric tube is equal to the width of the ferrite boss.

5. The waveguide junction ferrite switch according to claim 2, wherein the inner diameter of the central hole of the dielectric tube is matched with and corresponds to the outer diameter of the wire of the excitation coil.

6. The waveguide junction ferrite switch of claim 2, wherein the dielectric tube is fixedly bonded within the through hole by means of bonding.

7. The waveguide junction ferrite switch of claim 1, wherein the body comprises a lower cavity and an upper cover both having a hexagonal prism shape, wherein a top surface of the lower cavity is recessed downward to form a Y-shaped cavity, and the upper cover is fixedly bonded to the top surface of the lower cavity to form the Y-shaped waveguide cavity.

8. The waveguide junction ferrite switch of claim 7, wherein the top surface of the top cover is recessed downward to form a cavity, the driver circuit being disposed within the cavity.

9. The waveguide junction ferrite switch of claim 1, wherein the top and bottom surfaces of the spacer are adhesively secured to the upper and lower walls of the Y-waveguide cavity, respectively, and wherein the two sides of the spacer are sealingly mated or have a gap with the sidewalls of the Y-waveguide cavity.

10. The waveguide junction ferrite switch of claim 1, wherein the dielectric tube is made of a ceramic material.

Technical Field

The invention relates to the technical field of ferrite switches. And more particularly to a waveguide junction ferrite switch.

Background

Compared with a semiconductor switch, the ferrite switch has obvious advantages in terms of insertion loss and power capacity, and compared with a mechanical switch, the ferrite switch is 2-3 orders of magnitude faster in conversion speed, does not have a maneuvering part and is high in reliability. Thus, in some applications, ferrite switches and their components are preferred for system applications.

Waveguide junction ferrite switches that are common today include: the device comprises a cavity, ferrite, a gasket, a driving circuit, an exciting coil, an over-matching sheet and an over-matching section. In order to enable the ferrite to be well matched with each microwave port, an over-matching sheet and an over-matching section are added between the ferrite and each microwave port, so that the size of a cavity of the device is larger, namely the external dimension of the device is larger, and the weight of the device is increased.

Disclosure of Invention

The invention aims to provide a waveguide junction type ferrite switch, which enables an exciting coil in a cavity to be kept on a waveguide H surface through a dielectric tube, thereby eliminating the coupling of the exciting coil to microwave energy, namely eliminating the microwave loss caused by the coupling of the microwave energy, simultaneously enabling the microwave energy to be more concentrated to the center of the cavity, and facilitating the miniaturization of a device.

According to one aspect of the invention, the waveguide junction type ferrite switch comprises a body, wherein three ports for installing waveguides are arranged on the side face of the body, the three ports are inwards recessed and extend to be communicated with each other to form a Y-shaped waveguide cavity, a first gasket, a ferrite and a second gasket which are Y-shaped are sequentially arranged in the center of the Y-shaped waveguide cavity from top to bottom, the Y-shaped ferrite is provided with three protruding parts respectively pointing to the three ports, a spacer is arranged on the end face of each protruding part, the three protruding parts of the ferrite are provided with through holes, a medium tube is arranged in each through hole, and an excitation coil penetrates through the medium tube and then penetrates out of the body from the side wall of the waveguide cavity to be connected with a driving circuit.

Preferably, the number of the medium pipes is three, and the medium pipes are respectively arranged in through holes of three convex parts of the ferrite.

Preferably, the through hole is disposed perpendicular to a side surface of the ferrite bead.

Preferably, the length of the medium pipe is equal to the width of the ferrite lug boss.

Preferably, the inner diameter of the central hole of the medium tube corresponds to the outer diameter of the lead of the excitation coil in a matching manner.

Preferably, the medium pipe is fixedly combined in the through hole in an adhesion mode.

Preferably, the device body comprises a lower cavity and an upper cover, the lower cavity and the upper cover are both hexagonal prism-shaped, the top surface of the lower cavity is recessed downwards to form a Y-shaped cavity, and the upper cover is fixedly combined with the top surface of the lower cavity to form the Y-shaped waveguide cavity together.

Preferably, the top surface of the upper cover is recessed downwards to form a cavity, and the driving circuit is arranged in the cavity.

Preferably, the top surface and the bottom surface of the spacer are respectively bonded and fixed with the upper wall and the lower wall of the Y-shaped waveguide cavity, and two side surfaces of the spacer are matched with the side wall of the Y-shaped waveguide cavity in a sealing mode or have gaps.

Preferably, the medium pipe is made of a ceramic material.

The invention has the following beneficial effects:

The invention fixes the exciting coil in the Y-shaped waveguide cavity by the three medium tubes, thus improving the reliability of the device; meanwhile, the excitation coil in the waveguide cavity can be kept on the H surface of the waveguide, so that the coupling of the excitation coil to the microwave energy can be eliminated, namely, the microwave loss caused by the coupling of the microwave energy is eliminated, and simultaneously, the microwave energy can be more concentrated to the center of the cavity, thereby facilitating the miniaturization of the device.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Fig. 1 shows a schematic structural diagram of the present invention.

Fig. 2 shows an exploded view of the present invention.

Fig. 3 shows a partial structural schematic of the present invention.

Fig. 4 shows a partially exploded view of the present invention.

Detailed Description

In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and 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 one embodiment of the waveguide junction ferrite switch of the present invention shown in fig. 1-4, the ferrite switch comprises: the device comprises an upper cover 1, a lower cavity 2, a first gasket 3, ferrite 4, a second gasket 5, a driving circuit 6, an excitation coil 7, a spacer 8 and a medium pipe 9. The upper cover 1 and the lower cavity 2 are both metal pieces in the shape of a hexagonal prism, the top surface of the lower cavity 2 is recessed downwards to form a Y-shaped cavity, the upper cover 1 is fixedly combined with the top surface of the lower cavity 2, the upper cover 1 and the lower cavity 2 jointly form a Y-shaped waveguide cavity, and the Y-shaped waveguide cavity forms three ports a, b and c on the surface of the lower cavity 2 and is used for connecting and installing waveguides. The included angle between the three cavities forming the Y-shaped waveguide cavity is preferably 120 degrees, and the included angle can be other angles if the shape structure needs.

The center of the Y-shaped waveguide cavity is sequentially provided with a first gasket 3, a ferrite 4 and a second gasket 5 from bottom to top, and the first gasket 3 and the second gasket 5 are both made of non-metal dielectric materials. The shapes of the first gasket 3, the ferrite 4 and the second gasket 5 are matched with the Y-shaped waveguide cavity and are also set to be Y-shaped, the lower surfaces of the first gasket 3 and the Y-shaped waveguide cavity are fixed in an adhesive mode, the lower surface of the ferrite 4 is fixed on the surface of the first gasket 3 in an adhesive mode, the upper surface of the ferrite 4 is fixed on the lower surface of the second gasket 5 in an adhesive mode, and the upper surface of the second gasket 5 is fixed on the upper surface of the Y-shaped waveguide cavity in an adhesive mode.

The ferrite 4 has three protrusions pointing to three ports a, b and c of the Y-type waveguide cavity, respectively, and a spacer 8 is bonded to an end surface of each of the protrusions, and the spacer 8 is made of a non-metallic material. The three spacers 8 are located in the Y-shaped waveguide cavity, the upper surface and the lower surface of each spacer 8 are respectively bonded and fixed with the upper surface and the lower surface of the Y-shaped waveguide cavity, and the surfaces of the two sides of each spacer 8 are matched with the side wall of the Y-shaped waveguide cavity in a sealing mode or have gaps. The spacer 8 facilitates impedance matching with the three ports a, b, c, so that the electrical performance of the body is good. Three convex parts of the ferrite 4 are provided with through holes 41, a medium tube 9 is arranged in each through hole 41, and the excitation coil 7 penetrates through the medium tube 9 and then penetrates out of the device body from the side wall of the Y-shaped waveguide cavity to be connected with a driving circuit 8. One end of the exciting coil 7 sequentially penetrates through the three medium tubes 9 on the ferrite 4 according to the annular direction, and then the two ends of the exciting coil penetrate through the device body to be connected with the positive electrode and the negative electrode of the driving circuit 8, so that the ferrite 4 is magnetized after the exciting coil 7 passes through current.

Specifically, as shown in fig. 3 and 4, the number of the dielectric tubes 9 is 3, the dielectric tubes respectively correspond to three protruding portions of the ferrite 4, a through hole 41 is formed in the center of the protruding portion of the ferrite 4, the through hole 41 is perpendicular to the side surface of the protruding portion, the dielectric tubes 9 are fixed in the through hole 41 through gluing, and the length of the dielectric tubes 9 is equal to the width of the protruding portion of the ferrite 4. The dielectric tube 9 is made of a non-metal material, the dielectric tube 9 is made of a ceramic material in the embodiment, and a central opening of the dielectric tube 9 corresponds to the wire diameter of the lead of the excitation coil in a matching manner. The exciting coil 7 is arranged around the ferrite 4 through the dielectric tube 9, so that the exciting coil 7 is kept on the H surface of the waveguide, the coupling of the exciting coil 7 to the microwave energy can be eliminated, namely, the microwave loss caused by the coupling of the microwave energy is eliminated, meanwhile, the microwave energy can be more concentrated to the center of the cavity, and the miniaturization of the device is convenient to realize.

As shown in fig. 1 and 2, the top surface of the upper cover 2 is recessed inward to form a cavity, and the driving circuit 6 is placed in the cavity and fixedly connected to the upper cover 2 by screws.

When the waveguide junction type ferrite switch works, the three spacers 8 respectively correspond to the port a, the port b and the port c. When the driving circuit 6 gives forward current to the exciting coil 7, the magnetization direction of the ferrite 4 is forward, microwave enters the cavity from the port a, the microwave is transmitted in the Y-shaped waveguide cavity, the microwave acts on the diaphragm 8 of the port a, the impedance of the microwave is matched between the port a and the ferrite 4 under the action of the diaphragm 8, then the microwave acts on the ferrite 4 after forward magnetization, and the microwave is output from the port b due to the fact that the ferrite 4 after forward magnetization has forward nonreciprocal microwave transmission characteristics and passes through the matching action of the diaphragm 8 of the port b. After the microwave enters the cavity from the port b, the microwave acts on the diaphragm 8 of the port b, the microwave impedance is matched between the port b and the ferrite 4 under the action of the diaphragm, then the microwave acts on the ferrite 4 after forward magnetization, and the microwave is output from the port c due to the fact that the ferrite after forward magnetization has forward nonreciprocal microwave transmission characteristics and passes through the matching action of the diaphragm 8 of the port c. After the microwave enters the cavity from the port c, the microwave acts on the diaphragm 8 of the port c, the microwave impedance is matched between the port c and the ferrite 4 under the action of the diaphragm 8, then the microwave acts on the ferrite 4 after forward magnetization, and the microwave is output from the port a due to the fact that the ferrite after forward magnetization has forward nonreciprocal microwave transmission characteristics and passes through the matching action of the diaphragm 8 of the port a. After the waveguide junction type ferrite switch acts on forward driving current, the waveguide junction type ferrite switch has the characteristic of forward circulating transmission of microwaves, namely, the microwaves are input from the port a and then output from the port b; after the input is carried out from the port b, the output is carried out from the port c; after the input from the c port, the output is from the a port.

When the driving circuit 6 supplies a reverse current to the exciting coil 7, the magnetization direction of the ferrite is reverse, and the ferrite after the reverse magnetization has the microwave transmission characteristic of reverse nonreciprocal, so that the transmission direction of the microwave in the ferrite is changed, namely the microwave transmission direction is changed into the microwave transmission direction from the port a and then from the port c; the port c enters the port and the port b exits the port b; from the b port in and from the a port out. In summary, when the driving circuit switches the current direction in the exciting coil, the transmission direction of the microwave is also switched at the same time.

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.