Compact high-power-capacity waveguide phase shifter and waveguide phase shifting method

Abstract

In order to solve the technical problems that an existing high-power phase shifter is very limited in power capacity, large in loss and large in size, the invention provides a compact high-power-capacity waveguide phase shifter and a waveguide phase shifting method. The waveguide phase shifter comprises a dual-circular polarizer and a choke piston; the dual-circular polarizer comprises a rectangular waveguide, a first square waveguide, a second square waveguide, a square-circular transition waveguide and a circular waveguide which are sequentially connected from bottom to top; the E surface ofthe first square waveguide is coupled to the top surface of the rectangular waveguide broadside; a certain coupling angle is formed between the port plane of the first square waveguide and the top surface of the rectangular waveguide broadside; two side surfaces in the first square waveguide are parallel to the port plane of the rectangular waveguide; in the rectangular waveguide, a cuboid metalmatching structure is inserted under the coupling area of the rectangular waveguide and the first square waveguide; the size of the rectangular waveguide meets the requirement of a TE<10> mode of onlytransmitting a fundamental mode; the size of the circular waveguide meets the requirement of a TE<11> mode of only transmitting a circular waveguide; the choke piston is arranged in the circular waveguide and is coaxial with the circular waveguide; and a metal pull rod connected with a servo motor is arranged on one end face of the choke piston.

Description

technical field [0001] The invention relates to a high power capacity transmission and emission passive device, in particular to a high power capacity waveguide phase shifter and a waveguide phase shifter method. Background technique [0002] Microwave waveguide phase shifter is a common device in the field of microwave and millimeter wave technology. It has a wide range of applications in radar systems, communication systems, electronic countermeasures systems, etc. The performance of the phase shifter will have an important impact on system performance. [0003] In the field of high-power microwave technology, it has the characteristics of strong electromagnetic field. Conventional high-power phase shifters use ferrite materials such as yttrium iron garnet (YIG). By changing the amplitude of the applied magnetic field or electric field, the propagation constant of the ferrite material is changed. to adjust the phase. Since dielectric and ferrite materials are prone to bre...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of very limited power capacity, large loss, and large volume of existing high-power phase shifters, the present invention provides a compact high-power capacity waveguide phase shifter and a waveguide phase shifting method

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