Compact five-port structure applied to three-path high-efficiency high-isolation power synthesis

Abstract

The invention provides a compact five-port structure applied to three-path high-efficiency high-isolation power synthesis. Three identical rectangular waveguides are interested at an included angle of 120 degrees; an E surface of a circular waveguide is coupled to a top plane of an intersected region of the three identical rectangular waveguides; a thin-wall circular-truncated-cone type embossment extending to the intersected region is arranged at the bottom of the intersected region of the three identical rectangular waveguides; a first metal probe and a second metal probe that are connected successively extend from a top flat plate of the circular-truncated-cone type embossment towards a direction of the circular waveguide, and a first medium coaxial waveguide and a second medium coaxial waveguide that are connected successively extend from the top flat plate of the circular-truncated-cone type embossment in an opposite direction; and the first metal probe and the first medium coaxial waveguide are connected. On the basis of keeping a compact size, a six-mode network is formed by using a TE10 mode of the three identical rectangular waveguides, a TEM mode of the coaxial waveguides, and a TE11 mode of the circular waveguide, thereby realizing high-efficiency power synthesis from three-path constant-amplitude same-phase rectangular TE10mode to a coaxial TEM mode.

Description

technical field [0001] The invention relates to the technical field of microwave passive devices, in particular to a compact five-port structure for three-way high-isolation, low-return loss, and high-efficiency power synthesis. Background technique [0002] Traditional high-power microwaves are generally generated by electric vacuum devices, but with the continuous improvement of the output power of active devices, a large number of active devices are used to form arrays, and then radiated through large-scale antenna arrays to generate microwaves that are different from traditional microwaves. Equivalent radiant power compared to vacuum device radiation. In order to reduce the number of active phased array antenna elements as much as possible while the equivalent radiated power remains unchanged, it is necessary to combine multiple active devices within a limited cross-sectional size. In order to ensure the failure performance of active devices, the system In order to ensu...

AI Technical Summary

Problems solved by technology

Among them, the binary power combiner based on the resistive diaphragm does not meet the kW-level power capacity requirements, and most of the combiners based on the existing conventional waveguide magic T structure do not meet the cross-sectional size requirements. The wave loss cannot meet the requirements, and the waveguide radial power distribution combiner cannot meet its ultra-compact volume requirements and high isolation and low reflection requirements. The spatial power combination technology is used in microwave frequency bands with relatively high

Conventional planar transmission lines relying on dielectrics are difficult to achieve kW-level power capacity. Therefore, most of the existing microwave power combining technologies do not meet the requirements of kW-level power capacity, low insertion loss, high isolation, and size and volume.

It is difficult to design a two-way power splitter that meets the requirements of power capacity and cross-sectional area, and it is even rarer for a compact kW-level power capacity combiner with high isolation, high efficiency and low return loss

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