CN113394530A

CN113394530A - Microwave device

Info

Publication number: CN113394530A
Application number: CN202110655707.6A
Authority: CN
Inventors: 梁超; 鲍重杰; 张宁
Original assignee: CICT Mobile Communication Technology Co Ltd
Current assignee: CICT Mobile Communication Technology Co Ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2021-09-14
Anticipated expiration: 2041-06-11
Also published as: CN113394530B

Abstract

The invention provides a microwave device, which comprises a first part, a second part and a microwave circuit board; the first part is provided with a first half cavity, the second part is provided with a second half cavity, the first part and the second part can be detachably connected and enable the first half cavity and the second half cavity to be spliced to form a cavity, and the microwave circuit board is installed in the cavity and stretches across the first half cavity and the second half cavity. The microwave device provided by the invention is formed by splicing the independent first part and the independent second part to form the cavity, partial microwave circuit installation procedures can be completed in the open first half cavity and the open second half cavity, and then the microwave device is spliced to form a complete microwave device.

Description

Microwave device

Technical Field

The invention relates to the technical field of communication, in particular to a microwave device.

Background

In the technical field of communication, the cavity type microwave device has many advantages in principle, such as good shielding property, low transmission loss, excellent batch index consistency and the like. In practical applications, a microwave circuit board is mostly installed inside a cavity of a microwave device, and then the microwave circuit board and a feeder cable are electrically connected inside the cavity through an operation hole. The installation mode is limited by the size of the cavity and the shell of the microwave device, the operation space is limited, the installation sequence is fixed, the installation of the microwave circuit board in the cavity is not easy to realize, and the microwave circuit board is easily influenced by the high temperature of the follow-up welding of the feed cable.

Disclosure of Invention

The invention provides a microwave device, which is used for solving the defects that in the prior art, a cavity of the microwave device is integrally formed, and a microwave circuit is difficult to install.

The present invention provides a microwave device, comprising: a first component, a second component and a microwave circuit board; the first part is provided with a first half cavity, the second part is provided with a second half cavity, the first part and the second part can be detachably connected and enable the first half cavity and the second half cavity to be spliced to form a cavity, and the microwave circuit board is installed in the cavity and stretches across the first half cavity and the second half cavity.

According to the microwave device provided by the invention, the second part is provided with a wiring through hole, and the pin of the microwave circuit board extends out of the cavity body through the wiring through hole and is connected with the feed cable.

According to the microwave device provided by the invention, the first part is provided with a first groove, the second part is provided with a second groove, one side of the microwave circuit board is inserted into the first groove, and the other side of the microwave circuit board is inserted into the second groove.

According to the microwave device provided by the invention, the second part has a metal surface, and the metal surface is connected with the outer conductor of the feeder cable.

According to the microwave device provided by the invention, one of the first part and the second part is provided with a clapboard, and the other part is provided with a clapboard groove, wherein the clapboard is inserted into the clapboard groove; the cavity is divided into a first cavity and a second cavity by the partition board, and the microwave circuit board is respectively arranged in the first cavity and the second cavity.

According to the microwave device provided by the invention, one of the first part and the second part is provided with a concave spigot, the other part is provided with a convex spigot, and the concave spigot is matched with the convex spigot.

According to the microwave device provided by the invention, the inner wall surface of the concave spigot is a non-metal surface; and/or the outer wall surface of the male end is a non-metal surface.

According to the microwave device provided by the invention, the first part is an injection molding part, a pultrusion part or a die casting part; and/or the second component is an injection molding part, a die casting part or a sheet metal part.

The microwave device further comprises a supporting piece, wherein the supporting piece is fixedly installed on the first part and the second part and limits the first part and the second part, and the installation direction of the supporting piece is perpendicular to the microwave circuit board.

The microwave device further comprises a supporting piece, the supporting piece is provided with a clamping groove, the first part is contained and limited and mounted in the clamping groove, and the mounting direction of the supporting piece is parallel to the microwave circuit board.

The microwave device provided by the invention is formed by splicing the independent first part and the independent second part to form the cavity, partial microwave circuit installation procedures can be completed in the open first half cavity and the open second half cavity, and then the microwave device is spliced to form a complete microwave device.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a microwave device provided in an embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic structural diagram of a microwave device according to another embodiment of the present invention;

FIG. 4 is a cross-sectional view B-B of FIG. 3;

fig. 5 is a cross-sectional view of a microwave device provided in accordance with yet another embodiment of the present invention;

reference numerals:

1: a first member; 11: a male end; 12: a first groove;

13: a first counterbore; 2: a second component; 21: a concave spigot;

22: a wiring through hole; 23: a second counterbore; 3: a microwave circuit board;

31: a feed interface; 4: a feeder cable; 41: an inner conductor;

42: an outer conductor; 5: a support member; 51: a protrusion;

52: a clamping head; 6: a cavity; 61: a first cavity;

62: a second cavity; 7: a partition plate; 71: partition plate grooves.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In which terms such as "upper", "lower", "left", "right", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

The microwave device provided by the embodiment of the invention comprises a first part 1, a second part 2 and a microwave circuit board 3. The first part 1 is provided with a first half cavity, the second part 2 is provided with a second half cavity, the first half cavity and the second half cavity are spliced to form a cavity 6, and the microwave circuit board 3 is installed in the cavity 6 and stretches across the first half cavity and the second half cavity.

In some embodiments, as shown in fig. 1, the first member 1 and the second member 2 are rectangular open-mouthed housings, and each of the first member and the second member includes a bottom wall and two side walls, the two side walls are connected to two sides of the bottom wall and extend in the same direction, the two side walls and the bottom wall together form a structural member having a cross section similar to a C shape, and an accommodating space is formed between the two side walls and the bottom wall as a half cavity. The first part 1 and the second part 2 are detachably spliced, and the bottom wall of the first part 1 and the bottom wall of the second part 2 are opposite left and right and are respectively used as the left wall and the right wall of the microwave device shell; two side walls of the first component 1 and two side walls of the second component 2 are respectively butted oppositely to form two upper walls and two lower walls of the microwave device shell; the first half cavity and the second half cavity are spliced to form a cavity 6 which is approximately cuboid and has two open ends and four surfaces surrounded by wall surfaces.

The microwave circuit board 3 is mounted within the cavity 6, spanning the first and second cavity halves. The surface of the microwave circuit board 3 is parallel to the upper wall and the lower wall of the microwave device shell, and two ends of the microwave circuit board are respectively connected to the left wall and the right wall of the microwave device shell. The microwave circuit board 3 may be one or more of a phase shifter circuit, a power divider circuit, a stripline transmission circuit, a combiner circuit, a coupler circuit, and a filter circuit, which is not limited in the present invention.

The microwave circuit board 3 can be mounted in the cavity 6 in various ways. For example, a support frame is respectively arranged in the first half cavity and the second half cavity, and two ends of the microwave circuit board 3 are fixed on the support frames. For another example, one end of the microwave circuit board 3 is soldered to the left wall, and the other end is soldered or fixedly mounted to the right wall. Besides the microwave circuit board 3, other parts such as a support frame of the microwave circuit, a medium for changing the amplitude phase of the microwave circuit, a tuning part and the like can be arranged in the cavity 6.

The microwave device provided by the invention is formed by splicing the independent first part 1 and the independent second part 2 to form the cavity 6, the installation process of a part of microwave circuit boards 3 can be completed in the open first half cavity and the open second half cavity, and then the microwave device is spliced to form a complete microwave device, so that the microwave device is easier to install compared with an integrally formed microwave device.

On the basis of the above embodiments, some embodiments of the invention provide microwave devices in which the second part 2 is provided with a wiring through hole 22. The pin of the microwave circuit board 3 extends to the outside of the cavity 6 through the wiring through hole 22 and is communicated with the inner conductor 41 of the feeding cable 4 as the feeding interface 31.

As shown in fig. 1 and 2, the bottom wall of the second member 2 is provided with a wiring through hole 22, and the wiring through hole 22 is a through hole penetrating the second member 2. The wiring through holes 22 may be provided in one or more number, and the number and position of the wiring through holes 22 are arranged along a straight line parallel to the side wall of the second member 2, and correspond to the pins of the microwave circuit board 3 one by one.

The welding of the feed interface 31 of the microwave circuit board 3 to the inner conductor 41 of the feed cable 4 can be performed outside the microwave device through the terminal through-hole 22, and the welding operation is more space-efficient and easier to perform. Also, since the feed interface 31 is not disposed inside the cavity 6, there is no need to consider a reserved operation space, and the cavity 6 can be further reduced in size. In addition, because the pins of the microwave circuit board 3 penetrate through the wiring through holes 22, the wiring through holes 22 can limit the pins, the microwave circuit board 3 is prevented from moving along the lengthwise direction of the microwave device shell, and the anti-seismic performance of the microwave device is improved.

In addition to the above-mentioned embodiments, as shown in fig. 1, the first member 1 has a first groove 12 on the inner side of the bottom wall, and the second member 2 has a second groove (not shown) on the inner side of the bottom wall corresponding to the position of the first groove 12. One side of the microwave circuit board 3 is inserted into the first groove 12, and the other side is inserted into the second groove. It can be understood that the second groove and the wiring through hole 22 are arranged on the same straight line, the second groove is divided into a plurality of sections by the wiring through hole 22, the edge of the microwave circuit board 3 is inserted into the second groove, and the pin extends out of the wiring through hole 22. Or, the first groove 12, the second groove and the microwave circuit board 3 are located on the same plane, the wiring through hole 22 is slightly higher than the second groove, and the pin of the microwave circuit board 3 is raised and extends out of the wiring through hole 22. Optionally, the first half cavity and the second half cavity are further provided with a support frame, and the support frame is supported in the middle area of the microwave circuit board 3 to ensure that the microwave circuit board 3 is stably installed.

On the basis of the above embodiment, as shown in fig. 2, the feeder cable 4 may be partially disposed on the outer surface of the second member 2, the inner conductor 41 at one end thereof is electrically connected to the pin of the microwave circuit board 3, and the outer conductor 42 is coupled to or soldered to the outside of the bottom wall of the second member 2 in the vicinity of the terminal through hole 22. In order to realize the electrical connection between the microwave device and the outer conductor 42, the second part 2 is made of metal, or the second part 2 is injection molded and is partially metallized on the outer side of the bottom wall where the wiring through hole 22 is located. Optionally, the outer surface of the second component 2 is provided with a cabling channel or a cabling buckle, so that the feeder cable 4 is conveniently arranged.

On the basis of the above embodiment, the embodiment of the present invention also provides a microwave device, wherein one of the first member 1 and the second member 2 is provided with the partition 7 on the inner side of the bottom wall, and the other is provided with the partition groove 71 on the inner side of the bottom wall. The partition 7 is parallel to the side wall, extends to the bottom wall of the other half chamber towards the opening and is inserted into the partition groove 71, so as to divide the chamber 6 into two sub-chambers of the first chamber 61 and the second chamber 62. The microwave circuit board 3 is mounted in each of the first cavity 61 and the second cavity 62, and the mounting manner of the microwave circuit board 3 may be any one of the above-mentioned.

In one embodiment, as shown in fig. 3 and 4, the partition 7 is provided in the first member 1 and the partition groove 71 is provided in the second member 2. The first cavity 61 is arranged above the baffle plate 7, and the second cavity 62 is arranged below the baffle plate. The first cavity 61 and the second cavity 62 are respectively provided with the first groove 12, the second groove and the wiring through hole 22. In another embodiment, the partition 7 is provided on the second member 2 and the partition groove 71 is provided on the first member 1.

In addition, the number of the partition boards 7 can be set according to the requirement, so that the cavity 6 is divided into a plurality of sub-cavities, and each sub-cavity is internally provided with one microwave circuit board 3. Each sub-cavity is correspondingly provided with a first groove 12, a second groove and a wiring through hole 22.

On the basis of the above-described embodiments, the first member 1 and the second member 2 may be joined in various ways.

For example, in one embodiment, as shown in fig. 1-4, the two side walls of the first member 1 are folded back at the ends to the outside of the cavity 6 to form a flange-like male edge 11, and the male edge 11 extends along the longitudinal direction of the cavity 6. Correspondingly, the two side walls of the second part 2 are provided at the ends with groove-like female sockets 21 opening towards the cavity 6, outside the cavity 6, the female sockets 21 likewise extending in the longitudinal direction of the cavity 6. The male seam allowance 11 and the female seam allowance 21 are matched in shape, and when the first component 1 and the second component 2 are assembled, the male seam allowance 11 slides in from one end of the second component 2 along a sliding groove formed by the female seam allowance 21, and the male seam allowance 11 is inserted into the female seam allowance 21.

Optionally, the male end 11 may also be a plurality of short ribs arranged at the end of the side wall of the first member 1, protruding out of the cavity 6, and arranged along the longitudinal direction of the cavity 6. Correspondingly, the female spigot 21 is a plurality of short grooves arranged along the lengthwise direction of the cavity 6.

In another embodiment, the female tang 21 is provided on the first part 1 and the male tang 11 is provided on the second part 2.

Preferably, the female spigot 21 and the male spigot 11 are interference fit.

In addition to the above embodiment, at least one of the surface of the female spigot 21 that contacts the male spigot 11, that is, the inner wall surface of the female spigot 21, and the surface of the male spigot 11 that contacts the female spigot 21, that is, the outer wall surface of the male spigot 11, is a non-metallic surface. For example, at least one of the female and

male stoppers

21 and 11 is made of a non-metallic material, or the inner wall surface of the female stopper 21 or the outer wall surface of the male stopper 11 is subjected to a non-metallic surface treatment. Thereby ensuring that the male and

female spigots

11, 21 are fitted electrically insulated to avoid contact non-linearity problems.

On the basis of the above embodiment, the forming manner of the first component 1 includes, but is not limited to, one of pultrusion, injection molding and die casting. The first part 1 may be entirely of metallic material or non-metallic material and may be provided with a surface treatment for metallisation of the inner wall of the first half-cavity.

On the basis of the above embodiment, the forming manner of the second component 2 includes, but is not limited to, one of pultrusion, die casting and sheet metal. The second part 2 may be entirely of metallic material, or non-metallic material and may be provided with a metallized surface treatment of the inner wall of the second half-cavity and of the outer wall in contact with the feeder cable 4.

On the basis of the above embodiments, in one embodiment the microwave device further comprises a support 5. The support 5 is fixedly mounted to the first and

second members

1, 2 and forms a stop for the first and

second members

1, 2. The support member 5 is installed in a direction perpendicular to the microwave circuit board 3.

As shown in fig. 2 and 4, the outer surface of the first component 1 is provided with a first counter bore 13, the outer surface of the second component 2 is provided with a second counter bore 23, and when only one first counter bore 13 is provided, the extending direction of the first counter bore 13 is perpendicular to the extending direction of the second counter bore 23; when there are multiple first counterbores 13, at least one of the first counterbores 13 extends in a direction perpendicular to the direction in which the second counterbores 23 extend. The support 5 is provided with a plurality of protrusions 51, and the plurality of protrusions 51 are inserted into the first and

second counterbores

13 and 23 in a one-to-one correspondence, thereby being mounted to the first and

second members

1 and 2 at the same time.

Wherein, the first component 1 is provided with a first counter bore 13 at the outer side of the bottom wall, and the second component 2 is provided with a second counter bore 23 at the outer side of a certain side wall. Optionally, the first component 1 is provided with a first counter bore 13 on the outer side of the side wall and the outer side of the bottom wall on the same side as the second counter bore 23. The support 5 is provided with a plurality of protrusions 51 corresponding to the first and

second counterbores

13 and 23 one to one, and the protrusions 51 are inserted into the first and

second counterbores

13 and 23, so that the support 5 is fixedly mounted outside the first and

second members

1 and 2. Because the supporting piece 5 is a rigid component, the relative distance between the protrusions 51 is unchanged, and the first component 1 and the second component 2 can be limited in the transverse direction and the longitudinal direction through the first counter bore 13 arranged on the bottom wall and the second counter bore 23 arranged on the side wall, so that the first component 1 and the second component 2 are prevented from being separated or sliding up and down.

The support 5 is further provided with a clamping head 52, and the clamping head 52 is arranged on the outer surface of the support 5 parallel to the side wall and protrudes in a direction perpendicular to the microwave circuit board 3. The card connector 52 is inserted into a mounting substrate or other component to effect the mounting of the microwave device. The mounting direction of the support 5 refers to the direction in which the card connector 52 is inserted into the substrate.

In another embodiment, as shown in fig. 5, the microwave device further includes a support 5, the support 5 is provided with a slot, and the first component 1 is received and limited and installed in the slot. Wherein the bottom wall of the first part 1 is in contact with the bottom of the groove and the side walls are in contact with the walls of the groove. The outer side of the bottom wall or the side wall of the first component 1 is provided with a first counter bore 13, a protrusion 51 is arranged in the clamping groove, and the protrusion 51 is inserted into the first counter bore 13 to fixedly mount the support member 5 on the first component 1. Likewise, when there is only one first counterbore 13, the direction of extension of the first counterbore 13 is perpendicular to the direction of extension of the second counterbore 23; when there are multiple first counterbores 13, at least one of the first counterbores 13 extends in a direction perpendicular to the direction in which the second counterbores 23 extend. Specifically, as shown in fig. 5, the side wall of the first member 1 is provided with a first counterbore 13, and the inner wall of the support member 5 is provided with a protrusion 51 which is fitted with the first counterbore 13. The second component 2 is provided with a concave spigot 21, the outer wall surface of the concave spigot 21 is provided with a second counter bore 23, the top of the support 5 is provided with a bulge 51, and the bulge 51 is matched with the second counter bore 23. The outer wall surface of the female spigot 21 is provided with a second counter bore 23, and the support member 5 is further provided with another protrusion 51 inserted into the second counter bore 23.

The support 5 is further provided with a clamping head 52, and the clamping head 52 is arranged on the outer surface of the support 5 parallel to the bottom wall of the first component 1, and the protruding direction of the clamping head 52 is parallel to the microwave circuit board 3. The card connector 52 is inserted into a mounting substrate or other component to effect the mounting of the microwave device.

In addition to the above embodiments, the supporting member 5 is preferably made of a non-metal material.

In practical operation, a suitable assembling sequence for the microwave device provided by the present invention is as follows: firstly welding the outer conductor 42 of the feed cable 4 to the outer surface of the second part 2, then installing the microwave circuit board 3 into the second half cavity, then plugging the first part 1 to the second part 2 to form a whole, then welding the inner conductor 41 of the feed cable 4 to the pin of the microwave circuit board 3 to form the feed interface 31, and finally installing the support 5 to the first part 1 and the second part 2.

The microwave device provided by the invention solves the problems that the forming process of the parts of the existing microwave device is complex and the performance index is easily influenced by welding. The split cavity design and the feed interface 31 are arranged outside the microwave device, so that the size of the section of the cavity 6 is effectively reduced, and the miniaturization and the light weight of the device are favorably realized; in addition, the secondary processing procedure of the microwave device shell is reduced, the half cavity is formed in one step by adopting a die, the part forming process is simplified, and the device cost is reduced; and finally, a more reasonable assembly sequence is facilitated, the circuit in the cavity 6 is prevented from being influenced by high welding temperature, and the consistency and reliability of performance indexes of the device are improved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A microwave device, comprising: a first component, a second component and a microwave circuit board;

the first part is provided with a first half cavity, the second part is provided with a second half cavity, the first part and the second part can be detachably connected and enable the first half cavity and the second half cavity to be spliced to form a cavity, and the microwave circuit board is installed in the cavity and stretches across the first half cavity and the second half cavity.

2. The microwave device according to claim 1, characterized in that the second part is provided with a wiring through hole, through which the pin of the microwave circuit board extends outside the cavity and is connected with a feeder cable.

3. The microwave device according to claim 2, wherein the first member is provided with a first groove, the second member is provided with a second groove, one side of the microwave circuit board is inserted into the first groove, and the other side of the microwave circuit board is inserted into the second groove.

4. The microwave device according to claim 2, characterized in that the second part has a metal face, which is connected with the outer conductor of the feeder cable.

5. The microwave device according to claim 1, wherein one of said first member and said second member is provided with a partition plate, and the other is provided with a partition plate groove, said partition plate being inserted in said partition plate groove;

the cavity is divided into a first cavity and a second cavity by the partition board, and the microwave circuit board is respectively arranged in the first cavity and the second cavity.

6. The microwave device according to claim 1, characterized in that one of said first and second parts is provided with a female spigot and the other with a male spigot, said female spigot and said male spigot fitting.

7. The microwave device according to claim 6, characterized in that an inner wall surface of the female spigot is a non-metal surface; and/or the outer wall surface of the male end is a non-metal surface.

8. The microwave device according to claim 1, characterized in that the first component is an injection molded part, a pultrusion part or a die cast part; and/or the second component is an injection molding part, a die casting part or a sheet metal part.

9. The microwave device according to claim 1, further comprising a support member fixedly installed to the first and second parts and defining a limit for the first and second parts, wherein an installation direction of the support member is perpendicular to the microwave circuit board.

10. The microwave device according to claim 1, further comprising a support member, wherein the support member is provided with a slot, the first component is received and limited in the slot, and the support member is installed in a direction parallel to the microwave circuit board.