A high-power multi-channel waveguide microstrip synthesizer and its realization method

Abstract

The present invention proposes a high-power multi-channel waveguide microstrip synthesizer and its implementation method, including waveguide microstrip conversion and waveguide power synthesis network, the multi-channel input end is a microstrip line, the output end is a rectangular waveguide, and the power amplifier module input and output The terminal is a microstrip line, the output power of the power amplifier module is converted into the waveguide power combining network through the waveguide microstrip, the output power of multiple power amplifier modules is combined in the waveguide power combining network, and the combined power is obtained by a high-power multi-channel waveguide microstrip combiner The output end of the rectangular waveguide is output, and the rectangular waveguide is divided into a lower cavity 1 and an upper cavity 2. The inner cavities of the lower cavity 1 and the upper cavity 2 are both width a / 2 and height b, and a boss is designed in the lower cavity 1 5. Design the groove corresponding to the boss 5 in the upper cavity 2, and design the steps of the microstrip pad 3, so that the size of the L1 part of the conductor strip 13 as the microstrip probe meets the design requirements in the waveguide, and the multi-channel input power The consistency of amplitude and phase is good, and the combined loss is small, which improves the reliability of the solid-state power transmitting component.

Description

technical field [0001] The invention belongs to the technical field of radar, communication system transmitter and microwave. Background technique [0002] Solid-state transmitters are gradually replacing vacuum tube transmitters in modern radar and communication systems due to their characteristics of low operating voltage, high reliability, long life, good maintainability, failure weakening and fast switching capabilities. The solid-state power transmission component combines the output power of multiple power amplifier modules, and then combines the power generated by multiple solid-state power transmission components. The combined power is the output power of the high-power centralized solid-state transmitter. The working frequency of solid-state transmitters ranges from P, L, S bands to C, X bands, and even higher frequency bands such as Ku. Below the C-band, the solid-state power transmission components can use a stripline design power combining network to combine the...

AI Technical Summary

Problems solved by technology

[0003] The present invention relates to a high-power multi-channel waveguide microstrip synthesizer and its realization method. Its multi-channel input end is a microstrip line, and its output end is a rectangular waveguide. The multi-channel input terminals with the combiner are directly connected, and the output power of the power amplifier module enters the waveguide power combining network through the waveguide microstrip conversion for power synthesis. The waveguide microstrip conversion design is the key technology for developing a high-power multi-channel waveguide microstrip synthesizer , in the higher frequency bands such as X and Ku, the waveguide microstrip conversion is very sensitive to the size of the L1 part of the microstrip probe in the waveguide, and the small change of this size has a great influence on the conversion of the microstrip line TEM mode to the waveguide TE10 mode Large, the existing high-power multi-channel waveguide microstrip synthesizer, the rectangular waveguide is spliced ​​by a U-shaped groove with an inner cavity width of a and a height of b and a cover plate. When processing, assembling and debugging structural parts, the waveguide micro It is difficult to guarantee the design size of the microstrip probe in the waveguide for band switching, the phase consistency of multi-channel input power is poor, the synthesis loss of high-power multi-channel waveguide microstrip synthesizer is large, the processing of solid-state power transmitting components is complicated, and the reliability is reduced

Images