Broadband rectangular waveguide magic T

Abstract

The invention a broadband rectangular waveguide magic T. The broadband rectangular waveguide magic T comprises a branch waveguide tube, an E-arm waveguide tube, an E-arm matching part, an H-arm waveguide tube and an H-arm matching part, wherein one end of the E-arm waveguide tube and one end of the H-arm waveguide tube communicate with a middle part of the branch waveguide tube, the E-arm matchingpart is arranged in the E-arm waveguide tube, and the H-arm matching part is arranged in the H-arm waveguide tube. The broadband rectangular waveguide magic T has the beneficial effects that the working bandwidth of a traditional waveguide magic T is expanded by employing the E-arm matching part and the H-arm matching part, and the matching structure is simple and is easy to process and manufacture.

Description

technical field [0001] The invention relates to the technical field of microwave communication, in particular to a broadband rectangular waveguide magic T. Background technique [0002] The magic T is generally composed of microwave transmission lines, and usually includes E arms, H arms, branch waveguides and matching structures formed by the transmission lines. The magic T is a four-port microwave device with a symmetrical structure. It has good port impedance matching characteristics, low loss, high isolation between the E arm and the H arm, and excellent port output amplitude consistency. It can constitute a single pulse and difference comparator, power divider A variety of microwave devices such as diplexers and duplexers are widely used in the beamforming network of antenna feeder systems. [0003] The microwave transmission lines commonly used to form the magic T mainly include strip lines, microstrip lines, slot lines, substrate integrated waveguides, rectangular wa...

AI Technical Summary

Problems solved by technology

Among them, the design of the multi-step metal cone structure is complex and requires high processing requirements for the cone, while the waveguide E-arm or H-arm adopts a single-section or multi-section impedance transformation section, which increases the size of the waveguide and is not conducive to the miniaturization of the magic T.

Although these methods can broaden the working bandwidth of the magic T of the rectangular waveguide to a certain extent, it is difficult to meet the practical application requirements of broadband miniaturized microwave systems due to the complex matching structure.

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