Miniaturized coaxial-to-waveguide combiner with directional coupler function

Abstract

The invention relates to the technical field of semiconductor manufacturing, and particularly discloses a miniaturized coaxial-to-waveguide combiner with a directional coupler function, and the combiner comprises a waveguide synthesis cavity. The port of the waveguide synthesis cavity is a combination port; the waveguide synthesis cavity comprises a waveguide upper cavity, a waveguide lower cavity and a signal excitation block; the first connecting rod and the second connecting rod are arranged on the two sides of the waveguide synthesis cavity; the first connecting rod and the second connecting rod are coaxially arranged; the coupling cavity is integrated with the waveguide upper cavity; the coupling block is arranged on the coupling cavity; the coupling block comprises a coupling U-shaped strip and an SMA interface module. According to the invention, functions of a traditional coaxial waveguide, a waveguide synthesizer and a waveguide directional coupler are integrated together, so that the synthesis power of kilowatts of an S wave band is realized, and the problem of large size of a traditional synthesis mode is solved.

Description

Technical Field

[0001] The present invention relates to the field of semiconductor manufacturing technology, and particularly to a miniaturized coaxial-to-waveguide combiner with a directional coupler function. Background Art

[0002] With the progress of technology, semiconductor manufacturing technology is advancing rapidly. Although the output power capabilities of microwave transistors have been continuously improved in various frequency bands, currently there are only transistors with a maximum output continuous wave of 600W per single transistor in the S band.

[0003] In a microwave RPS system, the output power of a solid-state microwave source often needs to reach several kilowatts, which requires considering the combination of multiple power modules. Traditional power combination is to first convert the output ports of each power module from coaxial ports to waveguide ports, and then perform power combination through a waveguide combiner, which results in a very large volume of the entire solid-state microwave source. As an indispensable component of the solid-state microwave source, the waveguide directional coupler will also increase the volume of the solid-state microwave source. Therefore, an element composed of a coupler and a coaxial-to-waveguide synthesizer is needed, which can not only ensure the small volume of the solid-state microwave source but also achieve a combined power of several kilowatts. At the same time, ensure that the production cost of this element is low. Summary of the Invention

[0004] The purpose of the present invention is to provide a miniaturized coaxial-to-waveguide combiner with a directional coupler function to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A miniaturized coaxial-to-waveguide combiner with a directional coupler function, the combiner comprising:

[0007] A waveguide synthesis cavity; the port of the waveguide synthesis cavity is a combining port; the waveguide synthesis cavity includes a waveguide upper cavity, a waveguide lower cavity, and a signal excitation block;

[0008] A first connecting rod and a second connecting rod arranged on both sides of the waveguide synthesis cavity; the first connecting rod and the second connecting rod are coaxially arranged;

[0009] A coupling cavity integrated with the waveguide upper cavity;

[0010] A coupling block installed on the coupling cavity; the coupling block includes a coupling U-shaped strip and an SMA interface module.

[0011] As a further solution of the present invention: the signal excitation block includes:

[0012] A waveguide rear baffle;

[0013] A mode conversion block connected to the waveguide rear baffle by fixing screws;

[0014] Among them, the vertical center line of the waveguide rear baffle coincides with the center line of the mode conversion block.

[0015] As a further solution of the present invention: One end of the first connecting rod is connected to one side of the mode conversion block through a coaxial air dielectric hole on the wide side of one side of the waveguide synthesis cavity, forming a shunt one-port of the coaxial-to-waveguide synthesizer; The other end of the first connecting rod extends out of the waveguide synthesis cavity, and a threaded hole is machined at the center of the end extending out of the cavity for connecting a coaxial connector;

[0016] One end of the second connecting rod is connected to the other side of the mode conversion block through a coaxial air dielectric hole on the wide side of the other side of the waveguide synthesis cavity, forming a shunt two-port of the coaxial-to-waveguide synthesizer; The other end of the second connecting rod extends out of the waveguide synthesis cavity, and a threaded hole is machined at the center of the end extending out of the cavity for connecting a coaxial connector.

[0017] As a further solution of the present invention: The coupling cavity is arranged on the wide side of the upper waveguide cavity.

[0018] As a further solution of the present invention: Both ends of the coupling U-shaped strip are respectively welded to two welding pins of the SMA interface module.

[0019] As a further solution of the present invention: The coupling port close to the shunt port is a forward coupling port, and the coupling port close to the combining port is a reverse coupling port.

[0020] As a further solution of the present invention: The mode conversion block has a spade-shaped structure.

[0021] As a further solution of the present invention: The included angle between the center line of the coupling cavity and the long side of the upper waveguide cavity is 45 degrees, and a coupling small hole is opened at the center position of the coupling cavity.

[0022] Compared with the prior art, the beneficial effect of the present invention is that the present invention is an element that integrates the functions of traditional coaxial-to-waveguide, waveguide synthesizer, and waveguide directional coupler, which not only realizes a combined power of several kilowatts in the S band, but also solves the problem of large volume of traditional synthesis methods. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention.

[0024] Figure 1 It is the first external view of a coaxial-to-waveguide combiner with a directional coupler function for miniaturization.

[0025] Figure 2 The second external view of a miniaturized coaxial-to-waveguide combiner with a directional coupler function.

[0026] Figure 3 The schematic cross-sectional structure diagram of the coupling cavity of a miniaturized coaxial-to-waveguide combiner with a directional coupler function.

[0027] In the figure: 1 - waveguide rear baffle, 2 - upper waveguide cavity, 3 - lower waveguide cavity, 4 - first connecting rod, 5 - second connecting rod, 6 - mode conversion block, 7 - coupling U-shaped strip, 8 - SMA interface module, 9 - coupling cavity, 10 - coupling small hole. Detailed implementation manners

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] Please refer to Figures 1 to 3 , in the embodiment of the present invention, a miniaturized coaxial-to-waveguide combiner with a directional coupler function, the combiner includes:

[0030] A waveguide synthesis cavity; the port of the waveguide synthesis cavity is a combining port; the waveguide synthesis cavity includes an upper waveguide cavity 2, a lower waveguide cavity 3 and a signal excitation block;

[0031] The first connecting rod 4 and the second connecting rod 5 arranged on both sides of the waveguide synthesis cavity; the first connecting rod 4 and the second connecting rod 5 are coaxially arranged;

[0032] The coupling cavity 9 integrated with the upper waveguide cavity 2;

[0033] The coupling block installed on the coupling cavity 9; the coupling block includes a coupling U-shaped strip 7 and an SMA interface module 8.

[0034] In an example of the technical solution of the present invention, a miniaturized coaxial-to-waveguide combiner with a directional coupler function is provided, including a waveguide rear baffle 1, an upper waveguide cavity 2, a lower waveguide cavity 3, a coaxial connecting rod, a mode conversion block 6, a coupling U-shaped strip 7, an SMA interface module 8, a coupling cavity 9 and a coupling small hole 10, and the coaxial connecting rod includes a first connecting rod 4 and a second connecting rod 5.

[0035] Among them, the signal excitation block includes:

[0036] The waveguide rear baffle 1;

[0037] The mode conversion block 6 connected to the waveguide rear baffle 1 through a fixing screw;

[0038] Among them, the vertical center line of the waveguide rear baffle 1 coincides with the center line of the mode conversion block 6.

[0039] The waveguide rear baffle 1 and the mode conversion block 6 are connected by fixing screws, and the vertical center line of the waveguide rear baffle 1 coincides with the center line of the mode conversion block 6, and the two form a signal excitation block.

[0040] The upper waveguide cavity 2, the lower waveguide cavity 3 and the signal excitation block are connected by fixing screws to form a waveguide synthesis cavity, and the synthesis cavity port is the combining port of the coaxial-to-waveguide synthesizer.

[0041] As a preferred embodiment of the technical solution of the present invention, one end of the first connecting rod 4 is connected from the coaxial air dielectric hole on one wide side of the waveguide synthesis cavity to one side of the mode conversion block 6 to form a split one-port of the coaxial-to-waveguide synthesizer; the other end of the first connecting rod 4 extends out of the waveguide synthesis cavity, and a threaded hole is machined at the center of the end extending out of the cavity for connecting a coaxial connector.

[0042] One end of the second connecting rod 5 is connected from the coaxial air dielectric hole on the other wide side of the waveguide synthesis cavity to the other side of the mode conversion block 6 to form a split two-port of the coaxial-to-waveguide synthesizer; the other end of the second connecting rod 5 extends out of the waveguide synthesis cavity, and a threaded hole is machined at the center of the end extending out of the cavity for connecting a coaxial connector.

[0043] One end of the coaxial connecting rod is respectively connected from the coaxial air dielectric holes on both wide sides of the waveguide synthesis cavity to both sides of the mode conversion block 6 to form a split one-port and a split two-port of the coaxial-to-waveguide synthesizer; the other end of the coaxial connecting rod extends out of the waveguide synthesis cavity, and a threaded hole is machined at the center of the end of the coaxial connecting rod extending out of the cavity, which is convenient for connecting a coaxial connector.

[0044] As a preferred embodiment of the technical solution of the present invention, the coupling cavity 9 is arranged on the wide side of the upper waveguide cavity 2.

[0045] As a preferred embodiment of the technical solution of the present invention, both ends of the coupling U-shaped strip 7 are respectively welded to two welding pins of the SMA interface module 8.

[0046] As a preferred embodiment of the technical solution of the present invention, the coupling port close to the split port is a forward coupling port, and the coupling port close to the combining port is a reverse coupling port.

[0047] As a preferred embodiment of the technical solution of the present invention, the mode conversion block 6 has a spade-shaped structure.

[0048] As a preferred embodiment of the technical solution of the present invention, the included angle between the center line of the coupling cavity 9 and the long side of the upper waveguide cavity 2 is 45 degrees, and a coupling small hole 10 is opened at the center position of the coupling cavity 9.

[0049] The present invention is an element that integrates all the functions of a traditional coaxial-to-waveguide, waveguide synthesizer, and waveguide directional coupler. It not only achieves a combined power of several kilowatts in the S band but also solves the problem of large volume in the traditional synthesis method.

[0050] In the description of the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A miniaturized coaxial-to-waveguide combiner with directional coupler function, characterized in that: The combiner comprises: A waveguide synthesis cavity; the port of the waveguide synthesis cavity is a combining port; the waveguide synthesis cavity comprises a waveguide upper cavity (2), a waveguide lower cavity (3) and a signal excitation block; A first connecting rod (4) and a second connecting rod (5) are arranged on both sides of the waveguide synthesis cavity; the first connecting rod (4) and the second connecting rod (5) are coaxially arranged; A coupling cavity (9) integrated with the cavity (2) on the waveguide; A coupling block is installed on a coupling cavity (9); the coupling block comprises a coupling U-shaped strip (7) and an SMA interface module (8).

2. The miniaturized coaxial-to-waveguide combiner with directional coupler function according to claim 1, characterized in that: The signal excitation block comprises: Waveguide rear baffle (1); A mode conversion block (6) connected to the waveguide rear baffle (1) via fixing screws; The vertical center line of the waveguide rear baffle (1) coincides with the center line of the mode conversion block (6).

3. The miniaturized coaxial-to-waveguide combiner with directional coupler function according to claim 1, characterized in that: One end of the first connecting rod (4) is connected from the coaxial air medium hole on the wide side of one side of the waveguide synthesis cavity to one side of the mode conversion block (6), forming a branch port of the coaxial to waveguide synthesizer; the other end of the first connecting rod (4) protrudes out of the waveguide synthesis cavity, and the center of the end protruding out of the cavity is machined with a threaded hole for connecting a coaxial connector; One end of the second connecting rod (5) is connected from the coaxial air medium hole on the wide side of the other side of the waveguide synthesis cavity to the other side of the mode conversion block (6), forming a branch two-port of the coaxial to waveguide synthesizer; the other end of the second connecting rod (5) protrudes out of the waveguide synthesis cavity, and the center of the end protruding out of the cavity is machined with a threaded hole for connecting a coaxial connector.

4. The miniaturized coaxial-to-waveguide combiner with directional coupler function according to claim 1, characterized in that: The coupling cavity (9) is arranged on the wide side of the cavity (2) on the waveguide.

5. The miniaturized coaxial-to-waveguide combiner with directional coupler function according to claim 1, characterized in that: The two ends of the coupling U-shaped strip (7) are respectively welded to two welding pins of the SMA interface module (8).

6. The miniaturized coaxial-to-waveguide combiner with directional coupler function according to claim 1, characterized in that: The coupling port close to the branch port is the forward coupling port, and the coupling port close to the combiner port is the reverse coupling port.

7. The miniaturized coaxial-to-waveguide combiner with directional coupler function according to claim 2, characterized in that: The mode conversion block (6) is a spade-shaped structure.

8. The miniaturized coaxial-to-waveguide combiner with directional coupler function according to claim 1, characterized in that: The angle between the center line of the coupling cavity (9) and the long side of the cavity (2) on the waveguide is 45 degrees, and a coupling hole (10) is provided at the center of the coupling cavity (9).

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