CN214313479U

CN214313479U - S-frequency-band coaxial eight-path high-power synthesizer

Info

Publication number: CN214313479U
Application number: CN202120224649.7U
Authority: CN
Inventors: 赵双领
Original assignee: CETC 27 Research Institute
Current assignee: CETC 27 Research Institute
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-09-28
Anticipated expiration: 2031-01-27

Abstract

The utility model provides a coaxial eight way high-power synthesizers of S frequency channel, including discoid shell, discoid shell in radially be radial evenly be provided with eight strip conductors, the inner of eight strip conductors assembles at the disc center and becomes synthetic knot, synthetic knot is connected with the coaxial line in shell upper wall department upwards vertically, the coaxial line upper end is connected with output coaxial connector, the outer end of eight strip conductors all is connected with input coaxial connector at the shell lateral wall department; the utility model can change the shapes, diameters and cross-sectional areas of eight strip conductors, synthesis junctions and coaxial lines according to the requirement of impedance, and has wide applicability; and the processing of the shell has low requirement on the precision, simple structure and low cost.

Description

S-frequency-band coaxial eight-path high-power synthesizer

Technical Field

The utility model relates to a microwave communication technical field especially relates to a coaxial eight way high-power synthesizers of S frequency channel.

Background

At present, S-frequency-band high-power transmitters in aerospace target fields and satellite ground measurement and control systems are gradually required to realize full solid state, and with the development of ground measurement and control and communication equipment in China, the full solid-state high-power transmitters are increasingly popularized with unique advantages. Output power is the primary indicator for high power transmitters. Due to the limitation of the output power of the solid-state power amplifier tube and the power amplifier module, the power synthesis technology must be adopted in the high-power transmitter to realize the all-solid-state high-power output, and the power synthesizer is the key microwave component for realizing the power synthesis technology.

The solutions and circuit devices for realizing power combining are various, and the power combining results and characteristics are theoretically the same regardless of primary combining, binary combining, cascade combining, radial lines, wilkinson circuits, branch strip lines, hybrid bridges, directional couplers, magic ts or transmission line transformers, and the like. However, the engineering practice always has technical difficulties and limitations, such as structure realization, volume limitation, frequency band requirement, power capacity, processing precision, electrical performance, and economic cost. Therefore, in the design of the power combiner, advantages and disadvantages should be balanced, comprehensive consideration should be given, and innovation and practicability should be realized according to the application environment and technical conditions.

The existing power synthesizer circuit is mainly formed by cascade combination of an input coaxial line, an output coaxial line, a coaxial strip line transformation section, a strip line impedance transformation section, a radial coaxial strip line eight-way power synthesis section, a coaxial impedance transformation section and the like, and a block diagram formed by the technical scheme is shown in figure 1; the coaxial band line conversion section and the band line impedance conversion section are realized by changing the diameter or the cross section area of the band conductor, so that the port impedance and the system impedance can form a good matching relation, the radial coaxial band line eight-path power synthesis junction is a convergence point of eight band conductors, the impedance matching can be further adapted by changing the size and the shape of the synthesis junction, and the coaxial impedance conversion section is realized by changing the diameter or the cross section area of the output coaxial line.

However, in order to meet the requirement of high power, the existing power synthesizer has high requirement on processing precision during design, complex structure and high cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coaxial eight way high-power synthesizers of S frequency channel to solve the problem that the structure of current power synthesizer is complicated, economic cost is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a coaxial eight way high-power synthesizers of S frequency channel, includes discoid shell, discoid shell in radially evenly be provided with eight strip conductors along radial, eight strip conductor 'S the inner assembles for synthetic knot at the disc center, synthetic knot is vertical upwards to be connected with the coaxial line in shell upper wall department, the coaxial line upper end is connected with output coaxial connector, eight strip conductor' S outer end all is connected with input coaxial connector in shell lateral wall department.

The input coaxial connector adopts an N-type coaxial connector, and the output coaxial connector adopts an L-29 type coaxial connector.

The strip conductor is arranged in the mounting groove, and the shape of the mounting groove is matched with that of the strip conductor.

The bottom of the shell is provided with a heat dissipation hole.

The radiating holes are provided with filter screens.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model can change the shapes, diameters and cross-sectional areas of eight strip conductors, synthesis junctions and coaxial lines according to the requirement of impedance, and has wide applicability; and the processing of the shell has low requirement on the precision, simple structure and low cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a power combiner;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a sectional view taken along line a-a of fig. 2.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 2 and 3: a coaxial eight way high-power synthesizers of S frequency channel, including discoid shell 1, discoid shell 1 in radially be radial evenly to be provided with eight strip conductor 3, eight strip conductor 3 'S the inner assembles at the disc center for synthetic knot 6, synthetic knot 6 is vertical upwards to be connected with coaxial line 4 in 1 upper wall department of shell, coaxial line 4 upper end is connected with output coaxial connector 5, eight strip conductor 3' S outer end all is connected with input coaxial connector 2 in 1 lateral wall department of shell.

The utility model discloses a theory of operation does: when the coaxial cable is used, eight paths of microwave signals with the same frequency and the same power enter the shell 1 through the input coaxial connector 2, namely enter the eight strip conductors 3 respectively, are converged at the synthesis junction 6, and then pass through the coaxial cable 4 with a specific cross section area and further output high power through the output coaxial connector 5; in the process, a user can change the shapes, the diameters and the cross sectional areas of the eight strip conductors 3, the synthetic junctions 6 and the coaxial lines 4 according to the requirement of impedance, so that the applicability is wide; and the processing of the shell 1 has low requirement on precision, simple structure and low cost.

Preferably: the input coaxial connector 2 adopts an N-type coaxial connector, and the output coaxial connector 5 adopts an L-29 type coaxial connector; the N-type coaxial connector and the L-29 type coaxial connector are general electric elements, are low in price and wide in application range.

Preferably: the strip conductor 3 is arranged in a mounting groove (omitted in the figure), the shape of the mounting groove is matched with that of the strip conductor 3, the strip conductor 3 is convenient to mount and fix, and the electrical isolation among different strip conductors 3 can be realized to a certain extent.

Preferably: the bottom of the shell 1 is provided with heat dissipation holes, and filter screens are arranged on the heat dissipation holes; the arrangement of the heat dissipation holes can facilitate the heat dissipation of the power combiner, the performance of the power combiner is enhanced, and the arrangement of the filter screen can prevent dust and the like outside the shell 1 from entering the shell 1 to damage the power combiner.

Compared with the prior art:

the utility model discloses compact structure, the form symmetry, the circuit is simple, the equal power synthesis occasion of specially adapted multichannel, and considers structure realization, power capacity and impedance match scheduling problem, simple structure, low cost, facilitate promotion during the design.

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

Claims

1. An S-band coaxial eight-path high-power synthesizer is characterized in that: including discoid shell, discoid shell in radially evenly be provided with eight strip conductors along radial, eight strip conductor's the inner assembles for synthetic knot at the disc center, synthetic knot is vertical upwards to be connected with the coaxial line in shell upper wall department, the coaxial line upper end is connected with output coaxial connector, eight strip conductor's outer end all is connected with input coaxial connector in shell lateral wall department.

2. The S-band coaxial eight-path high-power synthesizer according to claim 1, characterized in that: the input coaxial connector adopts an N-type coaxial connector, and the output coaxial connector adopts an L-29 type coaxial connector.

3. The S-band coaxial eight-path high-power synthesizer according to claim 1, characterized in that: the strip conductor is arranged in the mounting groove, and the shape of the mounting groove is matched with that of the strip conductor.

4. The S-band coaxial eight-path high-power synthesizer according to claim 1, characterized in that: the bottom of the shell is provided with a heat dissipation hole.

5. The S-band coaxial eight-path high-power synthesizer according to claim 4, characterized in that: the radiating holes are provided with filter screens.