Waveguide-based microwave frequency selection device
A microwave and frequency-selective technology, applied in the microwave field, to achieve the effect of ensuring transmittance, convenient and flexible adjustment of transmittance, stable transmission and low loss
Active Publication Date: 2021-06-11
NAVAL UNIV OF ENG PLA
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[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a microwave frequency-selective device based on bandgap closed-loop, aiming to solve the technical problem that the microwave frequency-selective device can be flexibly adjusted while realizing high-frequency filtering
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[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0025] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other. The present invention will be further described in detail below in combination with specific embodiments.
[0026] A microwave frequency-selective device based on bandgap closed-loop. The microwave frequency-selective device includes a closed-loop bandgap structure, an input waveguide and an output waveguide. The closed-loop bandgap structure is composed of an inner ring metal sheet, an o...
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Abstract
The invention discloses a microwave frequency selection device based on a band gap closed loop. The microwave frequency selection device comprises a closed-loop band gap structure, an input waveguide and an output waveguide, and is characterized in that the closed-loop band gap structure is a closed-loop columnar structure formed by connecting an inner ring metal sheet, an outer ring metal sheet, an upper metal sheet and a lower metal sheet end to end in a surrounding manner; the ratio of the cross section area of an inner ring to the cross section area of an outer ring of the closed-loop band gap structure is larger than 90%, the side edges of the closed-loop band gap structure are respectively provided with an input port and an output port, the input port is connected with a port of the input waveguide, and the output port is connected with a port of the output waveguide. Compared with an existing microwave frequency selection technology, the waveguide filtering frequency selection device has the advantages of sensitive and accurate frequency selection, convenient and flexible transmissivity adjustment, simple structure, difficulty in damage, flexible disassembly and assembly, stable transmission, small loss, high bearing power and the like.
Description
technical field [0001] The invention belongs to the microwave field, and in particular relates to a microwave frequency-selective device based on a bandgap closed loop. Background technique [0002] Research and development of microwave frequency-selective devices is an important direction in the field of microwave engineering. Microwave frequency-selective devices are widely used in various microwave radio frequency equipment. The current microwave frequency-selective devices are mainly realized by two technical approaches, that is, the multi-stage series connection of frequency-selective circuits of LC components is used to realize it, or the frequency-selected device is realized by microstrip filtering. [0003] However, for the realization of multi-stage series series of frequency selection circuits of LC components, the higher the filtering accuracy requirements are, the more LC frequency selection circuits need to be connected in series, resulting in high cost and com...
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IPC IPC(8): H01P1/20
CPCH01P1/20
Inventor 赵林朱婷婷王宁谢慧张志刚吴华宁冯慧婷
Owner NAVAL UNIV OF ENG PLA