WO2020215660A1

WO2020215660A1 - Composite network microwave device and microwave device cavity thereof

Info

Publication number: WO2020215660A1
Application number: PCT/CN2019/116054
Authority: WO
Inventors: 刘培涛; 苏国生; 孙善球; 卜斌龙; 薛锋章; 陈礼涛; 邱建源
Original assignee: 京信通信技术(广州)有限公司
Priority date: 2019-04-23
Filing date: 2019-11-06
Publication date: 2020-10-29
Also published as: CN109994809A; CN109994809B

Abstract

The present application provides a composite network microwave device and a microwave device cavity thereof. The composite network microwave device comprises a microwave device cavity and a composite microwave network built in the microwave device cavity. The composite microwave network comprises a first microwave network and at least one second microwave network intersecting with the first microwave network. One of the first microwave network and the second microwave network is connected to a transmission cable by means of the other microwave network. Using one of the first microwave network and the second microwave network as a connector for connecting the transmission cable and the other microwave network can greatly reduce the wiring difficulty of a microwave network circuit. Moreover, the intersecting first microwave network and second microwave network can constitute a three-dimensional microwave network circuit to implement highly integrated design of microwave networks, and the application to a base station antenna can greatly reduce the number of components and transmission cables, thereby facilitating the development of antenna miniaturization.

Description

Composite network microwave device and its microwave device cavity

Technical field

This application relates to the field of microwave communication, and in particular to a composite network microwave device and its microwave device cavity.

Background technique

Microwave components are the core components of base station antennas. At present, the commonly used microwave components in base station antennas include phase shifters, power dividers, filters, etc. Take the phase shifter as an example. With the development of mobile communication technology, microwave devices play an important role in the overall performance of multi-frequency antennas and the development of miniaturization and lightweight.

The existing phase shifter mainly includes a cavity, a microwave network circuit arranged in the cavity, a wiring hole arranged on the cavity, and a coaxial cable arranged in the wiring hole and used for input/output signals. Among them, the microwave network circuit It is generally printed on the same PCB (Printed Circuit Board), and often only a single-function circuit is printed on the same PCB, that is, the existing microwave devices generally can only achieve one microwave network function. An antenna for mobile communication needs to implement multiple microwave network functions, which requires multiple microwave devices inside the antenna, occupying a large amount of space inside the antenna, and every two interconnected devices are connected by cables, which requires a large amount of Cables have disadvantages such as large insertion loss, high cost, and complicated wiring.

In addition, due to the size of the cavity inside the cavity, setting up microwave network circuits on the same PCB is not conducive to wiring, which further increases the difficulty of wiring. Under the development trend of antenna miniaturization and refinement, the phase shift The miniaturization design of the device has become an important technical problem to be solved urgently.

Summary of the invention

The purpose of this application is to provide a composite network microwave device with the effect of integrating multiple microwave circuits and reducing the difficulty of microwave circuit design.

Another object of the present application is to provide a microwave device cavity used in the composite network microwave device.

In order to achieve the above objectives, this application provides the following technical solutions:

As a first aspect, the present application relates to a composite network microwave device, including a microwave device cavity and a composite microwave network built in the microwave device cavity. The composite microwave network includes a first microwave network and at least one A second microwave network intersecting the first microwave network, and one of the first microwave network and the second microwave network is connected to a transmission cable through the other microwave network.

As a second aspect, the present application also relates to a microwave device cavity. The microwave device cavity includes a composite microwave capable of accommodating a first microwave network and at least one second microwave network intersecting the first microwave network. The cavity body of the network, wherein the cavity body is further provided with one of the first microwave network and the second microwave network in the composite microwave network through another microwave network and a transmission cable and a corresponding microwave network Electrically connected through holes, the cavity body includes a pair of opposed side walls and a top wall and a bottom wall that connect the pair of side walls and define the cavity;

The inner side of the side wall is provided with a first slot for inserting the first microwave network; or the inner side of the side wall is provided with a first slot for inserting the first microwave network, and the top wall and/or A second card slot for inserting the second microwave network is opened on the bottom wall.

Compared with the prior art, the solution of this application has the following advantages:

In the composite network microwave device of the present application, the intersecting first microwave network and second microwave network are arranged in the cavity, and one of the microwave networks can be connected to the transmission cable through the other microwave network, for example, in a phase shifter network The second microwave network serves as a connection between the first microwave network and the transmission cable, so that the first microwave network is matched through the second microwave network, which can achieve the purpose of electrical delay and help reduce the transmission cable Use, thereby greatly reducing the difficulty of wiring.

The additional aspects and advantages of this application will be partly given in the following description, which will become obvious from the following description, or be understood through the practice of this application.

Description of the drawings

The above and/or additional aspects and advantages of the present application will become obvious and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, in which:

Fig. 1 is a schematic diagram of a composite microwave network of an embodiment of a composite network microwave device of this application;

2 is a schematic diagram of a three-dimensional structure of an embodiment of a composite network microwave device of this application;

3 is a top view of a composite microwave network of an embodiment of a composite network microwave device of this application;

4 is a schematic diagram of the connection between the composite microwave network and the transmission cable of an embodiment of the composite network microwave device of this application;

5 is a perspective view of a single-layer structure of an embodiment of a composite network microwave device of this application;

FIG. 6 is a front view of a single-layer structure of an embodiment of a composite network microwave device according to this application;

FIG. 7 is a perspective view of an embodiment of the microwave device cavity of the present application in which the cable cavity is provided on the peripheral side wall of the cavity body;

FIG. 8 is a schematic diagram of the cable cavity of an embodiment of the composite network microwave device of this application being provided on the peripheral side wall of the cavity body;

FIG. 9 is a front view of an embodiment of the composite network microwave device of the present application in which the cable cavity is provided on the peripheral side wall of the cavity body;

FIG. 10 is a perspective view of a partition provided in the cavity body of an embodiment of the composite network microwave device of this application;

FIG. 11 is a front view showing that the cable cavity is located on the side wall of the cavity of an embodiment of the composite network microwave device of this application;

FIG. 12 is a perspective view illustrating the integration of multiple microwave networks of an embodiment of a composite network microwave device according to this application;

FIG. 13 is a front view illustrating the integration of multiple microwave networks of an embodiment of the composite network microwave device of this application.

In the figure, 1. cavity body; 11, top wall; 12, bottom wall; 13, side wall; 14, first card slot; 15, second card slot; 16, partition plate; 17, through hole; 2, Cable cavity; 21. Wiring hole; 22. Ring fastener; 3. Protection cavity; 41. First microwave network; 411. First phase shift circuit; 412. Second phase shift circuit; 413. 42. The second microwave network; 421, the first input terminal; 422, the second input terminal; 423, the first combined port; 424, the second combined port; 425, the third combined port; 43, The third microwave network; 5. Transmission cable; 6. Phase shifter dielectric board.

Detailed ways

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present application, and cannot be construed as a limitation to the present application.

Each embodiment is dedicated to providing a microwave device suitable for the mobile communication field, specifically to provide a microwave device with a three-dimensional composite microwave network. Wherein, the composite microwave network refers to multiple microwave networks with the same or different structures and functions, and the so-called three-dimensional type refers to at least two of the multiple microwave networks intersecting and fixedly connected to form a three-dimensional structure.

Figures 1 to 13 together show the composite network microwave device of the present application (hereinafter referred to as "microwave device"), which includes a microwave device cavity and a composite microwave network arranged in the microwave device cavity, wherein the composite microwave network includes intersecting first The microwave network 41 is connected to the second microwave network 42, and the first microwave network 41 is connected to the transmission cable 5 through the second microwave network 42 (it should be understood that in other embodiments, referring to FIGS. 7-9, it is also Including the case where the second microwave network 42 is connected to the transmission cable 5 through the first microwave network 41). On the one hand, the second microwave network 42 can be used as a transmission line to realize the connection between the first microwave network 41 and the transmission cable 5, which can make full use of the accommodating space of the microwave device cavity, thereby helping to reduce transmission lines. The use of the cable 5 greatly reduces the wiring difficulty. For example, when the microwave device is a phase shifter, the first microwave network 41 may include a phase shift circuit, and the second microwave network 42 as a transmission line may be a phase shifter phase matching network for phase matching the first microwave network 41 , For the purpose of electrical delay. On the other hand, microwave networks with the same circuit function can be arranged on different circuit substrates to realize the extension of the microwave network in three-dimensional space; at least two microwave networks with different circuit functions can also be integrated in the same microwave device cavity, so that one Microwave devices have multiple microwave network functions, which can reduce the use of devices and cables, greatly optimize the internal layout of the antenna, and facilitate the miniaturization of the antenna.

It should be understood that the circuit structures and realized functions of the first microwave network 41 and the second microwave network 42 may be the same or different; in addition, the two microwave networks may also be different components that realize the same circuit function. Wherein, the microwave network includes but is not limited to at least one of a phase shift circuit, a filter circuit, a power division circuit, a combiner circuit, a coupling circuit, and a duplex circuit.

In the microwave device of the present application, the microwave network is set as a first microwave network 41 and a second microwave network 42 intersecting and connecting at a certain angle. The first microwave network 41 and the second microwave network 42 may be a circuit printed on a substrate such as a PCB or a circuit composed of a metal conductor with a three-dimensional structure according to known circuit principles. If the microwave network circuit is implemented by a PCB, a microwave network circuit for realizing the known specific circuit function can be printed on the PCB, and the end of the PCB can be inserted into the card slot provided in the corresponding cavity to achieve fixed. If the microwave network is a metal conductor, it can be inserted into the corresponding slot through an insulating structure to achieve fixation.

As a preferred embodiment of the present application, the microwave network in this embodiment is a circuit printed on a PCB-based substrate, and the first microwave network 41 and the second microwave network 42 are divided into two or more circuits On the substrate, it is more convenient to design the microwave network on the circuit substrate. For example, the microwave network of the same circuit function can be set on different circuit substrates to realize the extension of the microwave network in the three-dimensional space and reduce the design of the microwave network on a single circuit substrate. Difficulty: It is also possible to integrate at least two microwave networks with different circuit functions in the cavity of the same microwave device, so that a microwave device has multiple microwave network functions, which can reduce the use of components and cables, and greatly optimize the layout of the antenna. Conducive to miniaturization of the antenna.

As a preferred embodiment of the present application, the first microwave network 41 and the second microwave network 42 are integrally formed, which has good structural stability. In other embodiments, the first microwave network 41 and the second microwave network 42 can also be arranged in a snap-fit manner, that is, the first microwave network 41 and the second microwave network 42 are detachably connected for easy replacement. The circuits with different functions can be combined with each other, and the application range is wide. When part of the circuit is damaged, only the damaged part can be replaced, which reduces the cost. In addition, the second microwave network 42 and the first microwave network 41 can also be fixed by welding or gluing.

As a preferred embodiment of the present application, the first microwave network 41 and the second microwave network 42 are arranged vertically, which is convenient for processing, and facilitates the consistency of processing and structural stability of products of the same series.

In practical applications, the composite network microwave device provided by the embodiment of the present application may be a combined phase shifter, which specifically includes the following implementation modes:

One of the more preferred embodiments is: the first microwave network 41 is used to realize the phase shifting and combining functions, and the second microwave network 42 is used as a transmission line built into the cavity of the composite network microwave device. For details, please refer to Figures 1 to 4 , Which includes two phase shifter dielectric plates 6, a first microwave network 41 arranged between the two phase shifter dielectric plates 6, and intersecting the first microwave network 41 and connecting the first microwave network 41 and the transmission cable The second microwave network 42 of 5, the first microwave network 41 includes a first phase shift circuit 411, a second phase shift circuit 412, and a combining circuit for connecting the first phase shift circuit 411 and the second phase shift circuit 412 413. Specifically, the first phase shifting circuit 411 and the second phase shifting circuit 412 can be respectively arranged on both sides of the substrate of the first microwave network 41, and the combining circuit 413 is located on the first phase shifting circuit 411 and the second phase shifting circuit 411. Between phase circuits 412.

It is further preferred that the combined phase shifter may include at least two second microwave networks 42. Specifically, in this embodiment, three second microwave networks 42 are provided, and one second microwave network 42 is connected as a transmission circuit. The above-mentioned phase shift circuit and the transmission cable 5, and the second microwave network 42 is provided with a first input terminal 421 and a second input terminal 422 corresponding to the first phase shift circuit 411 and the second phase shift circuit 412 to connect to the first The phase shift circuit 411 and the transmission cable 5 and the second phase shift circuit 412 and the transmission cable 5. Specifically, in this embodiment, the first phase shift circuit 411 and the second phase shift circuit 412 correspond to different working frequency bands, respectively, the corresponding first input terminal 421 may be the first frequency band input terminal, and the second input terminal 422 may be The second frequency band input terminal is used to input signals of different frequency bands into the corresponding phase shift circuit through the transmission cable 5 connected thereto. The other two second microwave networks 42 are used to connect the combining circuit 413 and the transmission cable 5. Specifically, in this embodiment, one of the second microwave networks 42 is provided with a first combining port 423, and the other The microwave network 42 is provided with a second combining port 424 and a third combining port 425. The first combining port 423, the second combining port 424 and the third combining port 425 are all used as the first phase shifting circuit The common output port of 411 and the second phase shift circuit 412.

It should be understood that the phase shifter dielectric plate 6 near the side where the first microwave network 41 is connected to the second microwave network 42 is provided with an avoiding groove (not labeled) for the second microwave network 42 to pass through.

In the above-mentioned combined phase shifter, the phase shift circuit and the combined circuit 413 are integrated in the first microwave network 41, that is, the phase shifter and the combiner are integrated in one device, and the first microwave network 41 is connected through the second microwave network 42 With the transmission cable 5, the use of components and the transmission cable 5 can be reduced. At the same time, the second microwave network 42 can be used for phase matching. By changing the length of the wire of the transmission circuit provided on the second microwave network 42 to play the role of electrical delay, the first phase shift circuit 411 and the second phase shift can be ensured The main distribution phase consistency between the circuit 412 and the transmission cable 5 is compared with the existing structure in which the matching phases of the two are matched by adding a cable. The structure of this embodiment does not require additional cables, which further reduces the use of the transmission cable 5 , To reduce the occupation of the cavity space by the transmission cable 5, thereby greatly reducing the difficulty of wiring.

Another preferred embodiment is: the first microwave network 41 includes a first phase shifting circuit 411 and a second phase shifting circuit 412, and the second microwave network 42 includes a combining circuit, that is, the first microwave network 41 is used to implement phase shifting. Function, the second microwave network 42 realizes the combining function. In this way, the integrated design of the phase shifter and the combiner in the same cavity can also be realized.

Another preferred embodiment is: the first microwave network 41 includes a first phase shifting circuit 411 and a second phase shifting circuit 412, the second microwave network 42 includes multiple, part of the second microwave network 42 includes a combining circuit, and the rest The second microwave network 42 serves as a transmission line.

In other embodiments, the second microwave network 42 can also be used to form a microwave circuit different from the first microwave network 41, such as a filter circuit, a power dividing circuit, a combining circuit, a coupling circuit, a duplex circuit, and other microwave circuits. Circuit, thereby realizing the highly integrated design of the microwave network. The application of this highly integrated microwave network to the antenna can greatly reduce the number of components and cables, simplify the antenna layout, and promote the miniaturization of the antenna. effect.

The present application also provides a microwave device cavity, which includes a composite microwave network capable of accommodating the first microwave network 41 and at least one second microwave network 42 intersecting the first microwave network 41 The cavity body 1 is preferably integrally formed by a molding process such as pultrusion molding or die-casting molding, and may be roughly rectangular parallelepiped shape, which includes a pair of oppositely arranged side walls 13 and connecting the pair of side walls 13 The top wall 11 and the bottom wall 12, the top wall 11, the bottom wall 12 and the pair of side walls 13 together define a cavity (not numbered) for accommodating the microwave network, the side wall of the cavity body 1 A card slot for engaging with the microwave network is opened on 13 to facilitate the assembly and structural stability of the microwave network.

5 and 6, in a preferred embodiment, the inside of the side wall 13 of the cavity body 1 is provided with a first slot 14 for inserting the first microwave network 41, and the cavity body 1 The top wall 11 is provided with a second card slot 15 for inserting the second microwave network 42 and allowing the second microwave network 42 to intersect the first microwave network 41. In this way, the space of the cavity body 1 is fully utilized, the integration of the composite microwave network in the same cavity is realized, the extension of the microwave network in the three-dimensional space, and the second microwave network 42 can be further used to realize the first microwave network 41 and transmission The connection between the cables 5 is beneficial to reduce the use of the transmission cable 5, thereby greatly reducing the wiring difficulty, greatly optimizing the internal layout of the antenna, and contributing to the miniaturization of the antenna. This microwave device cavity embodiment is based on the same inventive concept as the foregoing composite microwave network device embodiment, and its technical effects are the same as the composite microwave network device embodiment of this application. For details, please refer to the composite microwave network device embodiment of this application The narrative is not repeated here.

In other embodiments, the second slot 15 may also be provided on the bottom wall 12; please refer to Figures 12 and 13, the top wall 11 and the bottom wall 12 of the cavity body 1 are both provided with second Card slot 15.

In addition, when multiple second microwave networks 42 are provided, the second microwave networks 42 can be provided on both sides of the first microwave network 41, or multiple second microwave networks can be provided on the first microwave network 41. On the same side of the cavity body 1, the second slot 15 is provided in multiple corresponding to the second microwave network 42, so that the second slot 15 can be respectively provided on the top wall 11 and the bottom wall 12 of the cavity body 1. , Or a plurality of second card slots 15 are arranged side by side on one of the top wall 11 and the bottom wall 12 of the cavity body 1.

Preferably, the first slot 14 is provided at the same height or substantially the same height of the pair of side walls 13, so that the first microwave network 41 inserted in the first slot 14 is parallel or roughly parallel to the bottom wall. 12. The second card slot 15 is designed so that the second microwave network 42 inserted in the second card slot 15 and the first microwave network 41 inserted in the first card slot 14 are fixed vertically or substantially vertically, In order to improve the consistency and structural stability of the microwave network.

Referring to FIGS. 7-9, further, the outer side of the cavity body 1 extends along the height direction of the cavity to form a protrusion, and the protrusion is provided with a wiring hole 21 to form a hole for passing the transmission cable 5 The cable cavity 2 can electrically connect the transmission cable 5 with the microwave network in the cavity body 1. The cross-sectional shape of the cable cavity 2 may be semicircular, circular, rectangular or other shapes, and the cable cavity 2 may also be formed into a ring or column shape according to actual needs. In addition, the cavity body 1 is also provided with a through hole 17 for electrically connecting the transmission cable 5 with the corresponding microwave network (see FIG. 1), so that the corresponding microwave network can pass through the through hole 17 Pass out and connect with the transmission cable 5.

Preferably, when the cable cavity 2 is provided on the top wall 11 and the bottom wall 12 of the cavity body 1, the through holes 17 are correspondingly provided on the top wall 11 and the bottom wall 12 of the cavity body 1. Above, compared to the prior art, a wiring groove is opened on the side wall of the cavity to fix the transmission cable 5 and the cable cavity 2 is arranged on the two side walls 13 of the cable cavity 2, which can be further Reducing the width of the cavity body 1 is beneficial to reducing the size of the antenna in the width direction when it is used in a base station antenna, especially a multi-frequency antenna, and is beneficial to the development of antenna miniaturization.

The wiring hole 21 is provided with solder, and the outer conductor of the transmission cable 5 can be connected to the cable cavity 2 by welding; in addition, a ring-shaped fastener can also be provided in the wiring hole 21 22. For example, an insulating clasp, which clamps and fixes the outer conductor of the transmission cable 5 through the insulating clasp to fix the transmission cable 5 to the cable cavity 2 and make the outer conductor of the transmission cable 5 and the cavity The body 1 is a coupling connection.

Preferably, referring to FIGS. 7-9, the cable cavity 2 is provided at a position corresponding to the second slot 15, and the through hole 17 is spaced apart from or adjacent to the cable cavity 2 , And the second card slot 15 is in communication with the through hole 17, and the second microwave network 42 inserted in the second card slot 15 can be partially penetrated by the connection between the second card slot 15 and the through hole 17 The cavity body 1 is also connected to the end of the transmission cable 5 in the cable cavity 2, thereby realizing the role of the second microwave network 42 as a connecting piece between the first microwave network 41 and the transmission cable 5, reducing The use of the cable is convenient for processing and simple operation.

In another embodiment, the through hole 17 can also be provided between the second slot 15 and the cable cavity 2, that is, the through hole 17 can be used as an extension of the second slot 15 In order to make the second card slot 17 and the wiring hole 21 directly communicate, the second microwave network 42 placed in the second card slot 15 can extend into the wiring hole 21 to be connected to the transmission cable 5. When the through hole 17 is arranged between the cable cavity 5 and the second slot 15, it can avoid the transmission cable 5 being unable to connect to the second microwave network 42 due to the too long cable cavity 2.

Further, the first microwave network 41 and the second microwave network 42 can be connected to form a whole and inserted into the cavity body 1 in a modular manner, and the second microwave network 42 can be connected to the cable The inner conductor of the transmission cable 5 in the cavity 2 is connected, which is convenient for operation.

In other embodiments, the cable cavity 2 can also be provided on the side wall 13 to reduce the size of the cavity in the height direction. The cable cavity 2 is provided on the side wall 3 at a position corresponding to the first slot 14, and the arrangement of the through hole 17 is the same as that of the second slot 15, namely The through hole 17 may be spaced apart from or adjacent to the cable cavity 2, and the through hole 17 is in communication with the first slot 14 so that the first microwave network 41 is partially separated from the first slot 14 and the through hole. The cavity body 1 passes through the communication point 17 and is directly connected with the transmission cable 2.

One end of the inner conductor of the transmission cable 5 in the longitudinal direction of the cavity body 1 is fixedly connected to the part of the microwave network exposed outside the cavity body 1, for example, by welding.

Preferably, the input/output port of the microwave network is provided at a part of the microwave network exposed outside the cavity body 1, for example, at a position substantially flush with the inner conductor of the transmission cable 5. With this arrangement, when the inner conductor of the transmission cable 5 is connected to the microwave network, the transmission cable 5 does not need to be bent and then welded to the microwave network, which can ensure the stability of the welding point. In addition, the transmission cable 5 does not need The occurrence of bending can reduce the damage to the physical structure of the transmission cable 5 due to the bending and the loss of the signal transmitted therein, thereby helping to improve the transmission efficiency of the transmission cable 5 and ensure the service life of the transmission cable.

In another embodiment, the wiring hole 21 of the cable cavity 2 is not connected to the cavity of the cavity body 1, and the transmission cable 5 in the wiring hole 21 and the cavity body 1 Microwave network coupling connection.

In another embodiment, the cable cavity 2 is provided on the top wall 11, the bottom wall 12 and the side walls 13 of the cavity body 1, and the outer wall of the cavity body 1 is provided with a through hole 17 so that the cable cavity 2 can communicate with the corresponding card slot to facilitate connection with the microwave network.

Further, a protective cavity 3 is also provided on the outside of the cavity body 1, and the protective cavity 3 can pass through the through holes 17 opened on the cavity body 1 corresponding to the microwave network connected to the transmission cable 5. It is connected to the first card slot 14 and the second card slot 15, so as to cover the microwave network that passes through the card slot and the through hole 17 to the outside of the cavity body 1, and then plays a role in the microwave network circuit. The protection function can avoid the damage of the microwave network circuit, and at the same time, it can also play the role of shielding protection, which can effectively suppress the electromagnetic interference of the external electromagnetic wave to the microwave network placed in the cavity body 1.

Preferably, along the longitudinal direction of the cavity body 1, the protection cavity 3 is arranged in the middle of the cavity body 1, and the cable cavity 2 is arranged closer to the cavity body 1 than the protection cavity 3 The position of the end.

Further, referring to FIGS. 10 and 11, the cavity body 1 is provided with a partition plate 16 that can divide the cavity to form a plurality of sub-cavities, and the sub-cavities are used to accommodate the composite microwave Network, the partition 16 includes a transverse partition and/or a longitudinal partition, wherein the transverse partition is used to divide the cavity to form a plurality of stacked sub-cavities, and the vertical partition is used to divide the cavity to form a plurality of side-by-side The sub-cavities are set up to accommodate more microwave networks, which will increase the level of integration. The partition 16 may preferably be integrally formed with the cavity body 1. Furthermore, when two upper and lower stacked sub-cavities (each with a sub-cavity) are laterally separated by the partition 16 in the cavity body 1, the second slot 15 and the cable cavity 2 can be correspondingly provided A set is provided on each of the upper and lower sides of the partition 16, that is, the top wall 11 of the upper sub-cavity and the bottom wall 12 of the lower sub-cavity are each provided with a set to facilitate the composite microwave network in the two sub-cavities. The stacking arrangement in the height direction helps to improve the compactness of the structure.

When two left and right side-by-side sub-cavities (each with a sub-cavity) are vertically separated by the partition 16 in the cavity body 1, the second clamping groove 15 and the cable cavity 2 can be in the partition 16 One set is provided on both sides and arranged on the top wall 11 or bottom wall 12 of the cavity body 1 to facilitate the arrangement of the composite microwave networks in the two sub-cavities side by side along the width direction, thereby improving the compactness of the structure. Among them, a set of second slot 15 and cable cavity 2 is the sum of the second slot 15 and cable cavity 2 corresponding to one sub-cavity, which includes at least one second slot 15 and at least one row of cables. Cable cavity 2.

10 and 11, in addition, the cavity body 1 can be separated by a plurality of horizontal and vertical partitions 16 into a plurality of sub-cavities stacked up and down, side by side side by side, the second card slot 15 and line The cable cavity 2 is provided with a set corresponding to each sub-cavity, and is preferably arranged on the top wall 11 of the upper sub-cavity and the bottom wall 12 of the lower sub-cavity.

Of course, in other embodiments, when the cavity body 1 is vertically separated by the partition 16 to separate two left and right side-by-side sub-cavities (each with a sub-cavity), the cable cavity 2 may also be provided correspondingly. On the left side wall of one sub-cavity on the left and the right side wall of the one on the right side, through holes 17 are provided on the left and right side walls so that the cable cavity 2 is connected to the The first slot 14 is connected, so that the composite microwave networks in the two sub-cavities are arranged side by side in the width direction, thereby improving the compactness of the structure.

Understandably, the above example is an implementation within a double-layer sub-cavity. When the partition 16 is divided into more layers, such as three layers, the composite microwave network in the sub-cavity of the middle layer can pass through the sidewalls. 13 is provided with a through hole 17 so that the first slot 14 is connected with the transmission cable 5 in the cable cavity 2 provided on the side wall 13, and the composite microwave network in the top subcavity and the bottom subcavity can be By providing a through hole 17 on the top wall 11 or the bottom wall 12 to connect the second slot 15 with the transmission cable 5 in the cable cavity 2 provided on the top wall 11 or the bottom wall 12, thereby facilitating transmission The connection between the cable 5 and the composite microwave network and optimized wiring.

The cavity body 1 can be divided into sub-cavities stacked up and down and/or side by side on the left and right through the partition board 16, and a corresponding composite microwave network is arranged in each sub-cavity, and the cable cavity 2 is arranged outside the sub-cavity, so that The microwave device can be applied to multi-band antennas and/or multi-polarized antennas, which facilitates the layout of the antenna internal network and saves cables.

Preferably, the cable cavity 2 is formed in a ring shape, and there are multiple rows corresponding to the number of the second card slots 15, and each row of the cable cavity 2 includes at least two coaxial and spaced cable cavities. Body 2, by setting the cable cavity 2 into a ring shape, the axial length of each cable cavity 2 can be reduced, thereby saving material and reducing the weight of the cavity; and multiple cables are arranged at intervals along the axis The cavity 2 can support the transmission cable 5 from multiple positions to ensure the structural stability of the cable, for example, to avoid deformation of the cable and avoid loosening of solder joints.

Preferably, both ends of the cavity body 1 along its longitudinal direction are provided with the cable cavities 2, and the protection cavity 3 is provided between the cable cavities 2 at both ends and is connected to the cable. The cable cavity 2 has a gap. More preferably, the protective cavity 3 and the cable cavity 2 are arranged coaxially, so that strip-shaped protrusions can be formed on the cavity body 1 through a forming process, and then processed (such as milling). The corresponding protection cavity 3 and cable cavity 2 facilitate processing and reduce costs.

In other embodiments, at least one end of the same outer wall of the cavity body 1 is provided with a row of the cable cavities 2, and each row of the cable cavities 2 includes at least two coaxial and spaced apart wires. Cable cavity 2.

Preferably, the first microwave network 41 can be horizontally arranged in the cavity body 1, and its two ends in the width direction are inserted into the first slot 14. The bottom end of the second microwave network 42 and the first microwave The network 41 is vertically connected, and its top end is inserted into the second card slot 15. The first microwave network 41 and the second microwave network 42 are restricted by the structure of a card slot and the second card slot 15, so that the two are perpendicular to each other, which is convenient for processing and is conducive to the uniformity and structural stability of the same series of products. Sex. In addition, by positioning the microwave network placed in the cavity body 1 through the first slot 14 and the second slot 15, the stability of the entire microwave device structure can be improved. In addition, the first slot 14 and the second slot 15 The card slot 15 is formed during the integral molding of the cavity body 1, which is convenient to manufacture and avoids the generation of passive intermodulation caused by the additional fixing structure.

In the composite network microwave device using the microwave device cavity, at least one second microwave network 42 is provided on one side of the first microwave network 41, and the cable cavity 2 can be set in contact with the second microwave network. On the top wall 11/bottom wall 12 on the same side of the network 42 and communicate with the second card slot 15, the transmission cable 5 and the first microwave network 41 are connected through the second microwave network 42; or, the cable The cavity 2 can be arranged on the side wall 13 of the cavity body 1 and the transmission cable 5 in it is connected to the first microwave network 41 through the first slot 14; or, the cable cavity 2 The top wall 11/bottom wall 12 and the side wall 13 are all provided with a cable cavity 2 for laying the transmission cable 5 to meet the wiring requirements of the composite microwave network.

In other embodiments, at least one second microwave network 42 is provided on both sides of the first microwave network 41, and the cable cavity 2 can be provided on the top wall 11 and the bottom wall of the cavity body 1. 12 and communicate with the second slot 15; or, the cable cavity 2 is only provided on the side wall 13 of the cavity body 1 and communicates with the first slot 14; or, the The cable cavity 2 can be provided on the top wall 11, the bottom wall 12 and the side wall 13 of the cavity body 1 at the same time, and the position of the cable cavity 2 can be changed according to actual design needs to meet the requirements of the composite microwave network. Wiring requirements.

As a preferred embodiment, when the microwave device is a phase shifter, the side of the second slot 15 close to the cavity is further provided with a limiting member (not shown) extending into the cavity, which may specifically be A limit plate extending along the length of the cavity body 1 ensures that the phase shifter dielectric plate 6 keeps non-contact with the second microwave network 42 during the movement, so as to avoid affecting the electrical performance of the composite microwave network.

In an embodiment not shown, when the second microwave network 42 has a circuit substrate, such as a PCB, and both sides of the PCB are provided with input/output ports of the microwave network, the cable cavity 2 can be used in the second A row is provided on both sides of the card slot 15 and is respectively connected to an input/output port on one side through a transmission cable 5 therein, thereby facilitating the connection of the transmission cable 5 and the microwave network. When there is a protective cavity 3 and it communicates with the second slot 15, the protective cavity 3 and the cable cavity 2 can be arranged in different axes.

Similarly, when the first microwave network 41 has a circuit substrate and both sides are provided with input/output ports, the above method can also be referred to, and two rows of cable cavities 2 are provided on both sides of the first card slot 14.

All in all, in this application, by forming a three-dimensional composite microwave network with two intersecting microwave network circuits, the space of the cavity can be fully utilized, and the second microwave network 42 can be used without increasing the volume of the cavity. Connecting the first microwave network 41 and the transmission cable 5 can greatly reduce the wiring difficulty of the microwave network circuit and reduce the use of the transmission cable 5. The second microwave network 42 and the transmission cable 5 can be welded and fixed or coupled. Preferably, the coupling connection between the second microwave network 42 and the transmission cable 5 can be adopted, which can realize the electroplating of the cavity body 1 without welding operation, so as to reduce the intermodulation interference and reduce the transmission line in the microwave device. The number of cables 5 further reduces the wiring difficulty of the microwave network circuit, and the process is simple. Separating two microwave networks with different circuit functions on two or more circuit substrates facilitates the design of the microwave network on the circuit substrate, thereby reducing the difficulty of designing the microwave network on a single circuit substrate, and making one microwave device With a variety of microwave network functions, it can achieve high integration of microwave networks to reduce the use of components and cables, greatly optimize the layout of the antenna, and help realize the miniaturization of the antenna.

Further, referring to FIGS. 11 and 12, the composite microwave network further includes at least one third microwave network 43 that intersects and is electrically connected to the first microwave network 41, and the third microwave network 43 can be used for setting Combining circuits, filter circuits, etc., can effectively use the cavity space of the cavity body 1, and can achieve a high degree of integration of the microwave network without increasing the volume of the cavity body 1, so as to further reduce the transmission cable 5 Quantity, when it is used in base station antennas, it is beneficial to reduce the number of microwave components and cables of the antenna, and is beneficial to the development of antenna miniaturization.

The above are only part of the implementation of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of this application, several improvements and modifications can be made, and these improvements and modifications are also Should be regarded as the scope of protection of this application.

Claims

A composite network microwave device, characterized in that it comprises a microwave device cavity and a composite microwave network built in the microwave device cavity, and the composite microwave network includes a first microwave network and at least one and the first microwave network An intersecting second microwave network, one of the first microwave network and the second microwave network is connected to a transmission cable through the other microwave network.
The composite network microwave device according to claim 1, wherein the first microwave network includes at least one of a phase shift circuit, a filter circuit, a power division circuit, a combining circuit, a duplex circuit, and a coupling circuit, so The second microwave network includes at least one of a transmission line, a phase shift circuit, a filter circuit, a power dividing circuit, a combining circuit, a duplex circuit, and a coupling circuit.
The composite network microwave device according to claim 1, wherein the first microwave network includes a first phase shift circuit, a second phase shift circuit, and a circuit connecting the first phase shift circuit and the second phase shift circuit. A combined circuit, the second microwave network includes a transmission line;

Alternatively, the first microwave network includes a first phase shifting circuit and a second phase shifting circuit, and the second microwave network includes a combining circuit.
The composite network microwave device of claim 1, wherein the first microwave network and the second microwave network are integrally formed.
The composite network microwave device according to claim 1, wherein the first microwave network and the second microwave network are vertically arranged.
The composite network microwave device according to claim 1, wherein the microwave device cavity comprises a cavity body, and the cavity body is provided with a through hole for electrically connecting the transmission cable and the corresponding microwave network, The cavity body includes a pair of opposed side walls and a top wall and a bottom wall that connect the pair of side walls and define the cavity;

The inner side of the side wall is provided with a first slot for inserting the first microwave network; or the inner side of the side wall is provided with a first slot for inserting the first microwave network, and the top wall and/or A second card slot for inserting the second microwave network is opened on the bottom wall.
The composite network microwave device of claim 6, wherein the cavity body is provided with a partition that can divide the cavity to form a plurality of sub-cavities, and the sub-cavities are used for accommodating In the composite microwave network, the partition includes a transverse partition and/or a longitudinal partition, the transverse partition is used to form the cavity into a plurality of stacked sub-cavities, and the longitudinal partition is used to The cavities respectively form a plurality of sub-cavities arranged side by side.
The composite network microwave device according to claim 6, wherein a cable cavity is provided on the outside of the cavity body, and the cable cavity is used for laying a transmission cable, and the outer conductor of the transmission cable is The cable cavity is welded, or the outer conductor is coupled to the cable cavity through an insulating clasp, and one of the first microwave network and the second microwave network in the composite microwave network passes through the other The microwave network is electrically connected with the inner conductor of the transmission cable.
The composite network microwave device according to claim 8, wherein the cable cavity is provided at a position corresponding to the first slot or the second slot, and the cable cavity and the The through hole is correspondingly communicated with the first card slot or the second card slot.
The composite network microwave device according to claim 6, wherein multiple second microwave networks are provided, and multiple second microwave networks can be separately provided on both sides of the first microwave network, or multiple Each of the second microwave networks may be set on the same side of the first microwave network;

The second card slots are provided with a plurality of corresponding to the second microwave network and are separately provided on the top wall and the bottom wall of the cavity body, or a plurality of the second card slots are all provided on the top wall or the bottom wall .
The composite network microwave device according to claim 8, wherein a protective cavity is further provided on the outer side of the cavity body, and the protective cavity is communicated with the through hole, and is used for covering along the through hole. The hole penetrates the corresponding microwave network outside the cavity body.
The composite network microwave device according to claim 11, wherein the two ends of the cavity body along the longitudinal direction are respectively provided with the cable cavity, the protection cavity and the cable cavity Coaxially arranged and spaced apart from the cable cavity.
A microwave device cavity, characterized in that the microwave device cavity includes a cavity body capable of accommodating a composite microwave network having a first microwave network and at least one second microwave network intersecting the first microwave network The cavity body is also provided with a through hole for electrically connecting one of the first microwave network and the second microwave network in the composite microwave network to the corresponding microwave network through another microwave network and a transmission cable , The cavity body includes a pair of opposed side walls and a top wall and a bottom wall that connect the pair of side walls and define the cavity;

The inner side of the side wall is provided with a first slot for inserting the first microwave network; or the inner side of the side wall is provided with a first slot for inserting the first microwave network, and the top wall and/or A second card slot for inserting the second microwave network is opened on the bottom wall.
The microwave device cavity according to claim 13, wherein the cavity body is provided with a partition that can divide the cavity to form a plurality of sub-cavities, and the sub-cavities are used for accommodating In the composite microwave network, the partition includes a transverse partition and/or a longitudinal partition, the transverse partition is used to form the cavity into a plurality of stacked sub-cavities, and the longitudinal partition is used to The cavities respectively form a plurality of sub-cavities arranged side by side.
The microwave device cavity according to claim 13, wherein a cable cavity is provided on the outer side of the cavity body, the cable cavity is used for laying a transmission cable, and the cable cavity is provided in At a position corresponding to the first card slot or the second card slot, and the cable cavity and the through hole are correspondingly communicated with the first card slot or the second card slot.
The microwave device cavity according to claim 13, wherein the second card slot is provided with a plurality of corresponding second microwave networks and is separately provided on the top wall and the bottom wall of the cavity body, or a plurality of The second card slots are all provided on the top wall or the bottom wall.
The microwave device cavity according to claim 15, wherein a protection cavity is further provided on the outer side of the cavity body, and the protection cavity is communicated with the through hole, and is used for covering along the through hole. The hole penetrates the corresponding microwave network outside the cavity body.
The microwave device cavity according to claim 17, wherein the two ends of the cavity body along the longitudinal direction are respectively provided with the cable cavity, the protection cavity and the cable cavity Coaxially arranged and spaced apart from the cable cavity.