A waveguide module

Abstract

The present invention provides a waveguide module, which relates to the field of microwave technology, and solves the problem that when the module waveguide port adopts the side-out form in the prior art, the waveguide airtight window cannot be directly fitted with the waveguide port to solve the airtightness problem of the waveguide port. It includes a module body and a working cavity arranged in the module body, and the side wall of the module body is provided with an installation card slot communicating with the working cavity, and an airtight functional block is sealed and installed in the installation card slot, and a waveguide airtight window is sealed and installed on the airtight functional block. The airtightness of the module is simultaneously ensured while facilitating the module body to carry out the side-out of the module waveguide port. Specifically, an airtight functional block is added to the signal transmission path, and this airtight functional block simultaneously satisfies the functions of welding the waveguide airtight window and becoming one with the waveguide structural member.

Description

Technical Field

[0001] The present invention relates to the field of microwave technology, and in particular to a waveguide module. Background Art

[0002] Microwave products usually use RF bare chips. For products with harsh working environments, it is often necessary to consider the airtightness of the module or even the entire machine.

[0003] Conventional airtight operation is to use laser sealing welding on the module shell and the end cover, and the aluminum is melted by laser to combine the shell and the cover into one. The waveguide port adopts the form of "porting out" from the end cover, and a "waveguide airtight window" is added to the waveguide port to achieve module-level airtightness. The "porting out" form of the module waveguide port will cause the microwave module layout to be flat; in special cases, the plane layout area is limited, and the structure considers the height space to change the plane area layout. The module is changed from "lying flat" to "side-standing", resulting in the module waveguide port can only be side-out, and the waveguide airtight window cannot be directly fitted with the waveguide port to solve the waveguide port airtightness problem. Summary of the invention

[0004] In view of the above problems, the object of the present invention is to provide a waveguide module that can simultaneously ensure the air tightness of the module while facilitating the module body to open the module waveguide port side.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A waveguide module comprises a module body and a working cavity arranged in the module body, wherein a side wall of the module body is provided with an installation slot communicating with the working cavity, an airtight functional block is sealed in the installation slot, and a waveguide airtight window is sealed on the airtight functional block.

[0007] Preferably, the module body includes a shell, the upper end face of the shell is sealed with an end cover, the shell and the end cover are connected to form a working chamber, at least two first positioning columns are vertically arranged in the working chamber, and a first positioning hole corresponding to the first positioning column is opened on the end cover.

[0008] Preferably, a first mounting groove is provided on the end cover, a second mounting groove corresponding to the first mounting groove is provided on the shell, the first mounting groove and the second mounting groove form a mounting slot, at least two second positioning columns are arranged in the mounting slot, and a second positioning hole corresponding to the second positioning column is provided on the airtight functional block.

[0009] Preferably, a radio frequency link is arranged in the working cavity, an installation cavity is opened on the lower end surface of the shell, a transmitting power board is detachably connected in the installation cavity, an internal power supply insulator connected to the radio frequency link is arranged on the transmitting power board, and an external power supply insulator connected to the transmitting power board is arranged on one side of the shell.

[0010] Preferably, a side wall of the shell away from the airtight functional block is provided with a radio frequency connector connected to the radio frequency link.

[0011] Preferably, a cover plate is sealed and mounted on the installation cavity.

[0012] Preferably, the transmitting power board is connected to the mounting cavity by screws.

[0013] Preferably, a third mounting groove is provided on the airtight functional block, a through hole connecting the front and back sides of the airtight functional block is provided in the third mounting groove, at least two third positioning columns are provided in the third mounting groove, and a third positioning hole corresponding to the third positioning column is provided on the waveguide airtight window.

[0014] Preferably, at least two alignment holes are formed on a side wall of the module body close to the airtight functional block.

[0015] Preferably, a side wall of the module body close to the airtight functional block is provided with a plurality of protrusions, and mounting holes are provided on the protrusions in a direction parallel to the axial direction of the alignment hole.

[0016] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0017] The airtightness of the module is ensured while the module body is conveniently opened to the side of the module waveguide port. Specifically, an airtight functional block is added to the signal transmission path, and this airtight functional block satisfies the functions of welding the waveguide airtight window and integrating with the waveguide structural parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of an explosion structure provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the coordination between the airtight functional block and the waveguide airtight window provided in an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the main structure provided by an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of a rear view structure provided by an embodiment of the present invention;

[0023] Figure 5A bottom-up structural schematic diagram provided for an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of a top view of the structure provided by an embodiment of the present invention.

[0025] Icons: 1-end cap; 2-first mounting slot; 3-first positioning column; 4-second positioning column; 5-waveguide airtight window; 6-airtight functional block; 7-second mounting slot; 8-alignment hole; 9-mounting hole; 10-internal power supply insulator; 11-screw; 12-cover plate; 13-RF link; 14-working chamber; 15-RF connector; 16-housing; 17-external power supply insulator; 18-transmitting power board; 19-third mounting slot; 20-third positioning hole; 21-third positioning column; 22-through hole. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Combine the following Figure 1-Figure 6 The present invention is described in detail.

[0029] Example

[0030] A waveguide module comprises a module body and a working cavity 14 arranged in the module body. A mounting slot communicating with the working cavity 14 is provided on a side wall of the module body. An airtight functional block 6 is sealed and installed in the mounting slot. A waveguide airtight window 5 is sealed and installed on the airtight functional block 6.

[0031] When the waveguide port of the module body is protruding sideways, the airtight functional block 6 is placed in the mounting slot for welding and sealing, and the waveguide airtight window 5 is installed in the airtight functional block 6 and welded and sealed, thereby ensuring the airtightness of the waveguide module.

[0032] The module body includes a shell 16, the upper end surface of the shell 16 is sealed with an end cover 1, and the shell 16 and the end cover 1 are connected to form a working chamber 14, in which at least two first positioning columns 3 are vertically arranged, and a first positioning hole corresponding to the first positioning column 3 is opened on the end cover 1.

[0033] The end cap 1 can be installed after the relevant components are installed in the working chamber 14, and the gap between the end cap 1 and the shell 16 is also sealed by welding; when the end cap 1 is inserted into the shell 16 from top to bottom, the first positioning column 3 cooperates with the first positioning hole (not shown in the figure) to keep the edges of the end cap 1 and the inner wall of the shell 16 at a suitable distance to ensure the quality of the welding seal. Before welding, the end cap 1 needs to be tightened from the back to ensure that the end cap 1 is flat, thereby improving the quality of the sealing.

[0034] A first mounting groove 2 is provided on the end cover 1, a second mounting groove 7 corresponding to the first mounting groove 2 is provided on the shell 16, the first mounting groove 2 and the second mounting groove 7 form a mounting slot, at least two second positioning columns 4 are arranged in the mounting slot, and a second positioning hole corresponding to the second positioning column 4 is provided on the airtight functional block 6.

[0035] When the airtight functional block 6 is installed, the second positioning column 4 cooperates with the second positioning hole (not shown in the figure) to keep the edges of the airtight functional block 6 at a suitable distance from the inner wall of the installation slot to ensure the quality of the welding seal.

[0036] The working cavity 14 is provided with a radio frequency link 13, and the lower end surface of the housing 16 is provided with an installation cavity, in which a transmitting power board 18 is detachably connected, and an internal power supply insulator 10 connected to the radio frequency link 13 is provided on the transmitting power board 18, and an external power supply insulator 17 connected to the transmitting power board 18 is provided on one side of the housing 16. The external power supply insulator 17 is connected to an external power supply to supply power to the transmitting power board 18 and the radio frequency link 13. The radio frequency link 13 is fixed in the working cavity 14 by bonding.

[0037] A radio frequency connector 15 connected to the radio frequency link 13 is provided on one side wall of the shell 16 away from the airtight functional block 6. The local oscillator and excitation of the transmitting module are input through the external intermediate frequency module (the frequency is low at this time, and it is transmitted in the form of a coaxial connector), and the transmitting signal is output through the radio frequency link 13 (the frequency is high at this time, and it is transmitted in the form of a waveguide). The transmitting signal continues to be given to the antenna, and the signal is transmitted into space via the antenna. The calibration signal of the transmitting module is given to the antenna in the form of a waveguide, transmitted into space through the antenna, and after encountering the target body signal, it is reflected back and received by the antenna and then transmitted back, completing the calibration function. The radio frequency connector 15 is also welded and sealed on the shell 16.

[0038] The installation cavity is sealed with a cover plate 12. The cover plate 12 seals the installation cavity by welding to ensure the airtightness of the module.

[0039] The transmitting power board 18 is connected to the installation cavity by screws 11. The screws 11 are used to facilitate the positioning and installation of the transmitting power board 18. After the transmitting power board 18 is initially installed, it is fixed in the installation cavity by welding.

[0040] A third mounting groove 19 is provided on the airtight functional block 6, a through hole 22 connecting the front and back sides of the airtight functional block 6 is provided in the third mounting groove 19, at least two third positioning columns 21 are provided in the third mounting groove 19, and a third positioning hole 20 corresponding to the third positioning column 21 is provided on the waveguide airtight window 5.

[0041] After the waveguide airtight window 5 is placed in the third installation groove 19, the third positioning column 21 cooperates with the third positioning hole 20 to keep the edges of the waveguide airtight window 5 at a suitable distance from the inner wall of the third installation groove 19 to ensure the quality of welding and sealing. The through hole 22 is provided so that the signal can be normally emitted from the waveguide airtight window 5.

[0042] At least two alignment holes 8 are provided on one side wall of the module body close to the airtight functional block 6. The arrangement of the alignment holes 8 facilitates the lateral alignment and positioning installation of the entire waveguide module.

[0043] A side wall of the module body close to the airtight functional block 6 is provided with several protrusions, and a mounting hole 9 is provided on the protrusion in a direction parallel to the axial direction of the alignment hole 8. The mounting hole 9 is provided to facilitate the use of a bolt-like structure to fix and install the entire waveguide module.

[0044] When testing waveguide modules at high and low temperatures, in order to prevent water vapor from entering the module cavity through the waveguide link and causing a short circuit, the conventional operation is to add a waveguide airtight window on the large cavity of the structural part or on the fixture. Since the waveguide airtight window requires welding technology, the structural part needs to be partially gold-plated, which increases the processing cost. However, this application fixes the "airtight functional block" to the waveguide module to achieve airtightness of the waveguide port at high and low temperatures, reducing the processing cost.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waveguide module, comprising a module body and a working cavity (14) arranged in the module body, characterized in that: The side wall of the module body is provided with an installation slot communicating with the working chamber (14), an airtight functional block (6) is sealed and installed in the installation slot, and a waveguide airtight window (5) is sealed and installed on the airtight functional block (6); The module body comprises a shell (16), the upper end surface of the shell (16) being sealedly connected to an end cover (1), the shell (16) and the end cover (1) being connected to form a working chamber (14), at least two first positioning columns (3) being vertically arranged in the working chamber (14), and a first positioning hole corresponding to the first positioning column (3) being opened on the end cover (1).

2. A waveguide module according to claim 1, characterized in that: The end cover (1) is provided with a first mounting groove (2), the housing (16) is provided with a second mounting groove (7) corresponding to the first mounting groove (2), the first mounting groove (2) and the second mounting groove (7) form a mounting slot, at least two second positioning columns (4) are arranged in the mounting slot, and the airtight functional block (6) is provided with a second positioning hole corresponding to the second positioning column (4).

3. A waveguide module according to claim 1, characterized in that: A radio frequency link (13) is arranged in the working cavity (14); a mounting cavity is provided on the lower end surface of the housing (16); a transmitting power board (18) is detachably connected to the mounting cavity; an internal power supply insulator (10) connected to the radio frequency link (13) is arranged on the transmitting power board (18); and an external power supply insulator (17) connected to the transmitting power board (18) is arranged on one side of the housing (16).

4. A waveguide module according to claim 3, characterized in that: A radio frequency connector (15) connected to the radio frequency link (13) is provided on a side wall of the housing (16) away from the airtight functional block (6).

5. A waveguide module according to claim 3, characterized in that: A cover plate (12) is sealed and mounted on the mounting cavity.

6. A waveguide module according to claim 3, characterized in that: The transmitting power supply board (18) is connected to the installation cavity via screws (11).

7. A waveguide module according to claim 1, characterized in that: The airtight functional block (6) is provided with a third mounting groove (19), a through hole (22) communicating with the front and back sides of the airtight functional block (6) is provided in the third mounting groove (19), at least two third positioning columns (21) are provided in the third mounting groove (19), and a third positioning hole (20) corresponding to the third positioning column (21) is provided on the waveguide airtight window (5).

8. A waveguide module according to claim 1, characterized in that: At least two alignment holes (8) are provided on a side wall of the module body close to the airtight functional block (6).

9. A waveguide module according to claim 7, characterized in that: A side wall of the module body close to the airtight functional block (6) is provided with a plurality of protrusions, and an installation hole (9) is provided on the upper edge of the protrusion in a direction parallel to the axial direction of the alignment hole (8).

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