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D-band circulator

A circulator and D-band technology, applied in the field of D-band circulators, can solve the problems of large waveguide size and circulator bandwidth limitation, and achieve the effects of large power capacity, less breakdown and reduced volume

Active Publication Date: 2021-11-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] The purpose of the present invention is to provide a D-band circulator to solve the problem that the standard waveguide size of the existing D-band circulator is large and the bandwidth of the circulator in the terahertz frequency band Constrained Problems, Realizing Miniaturization, Integration, and High Performance of D-Band Circulators

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] A D-band circulator includes: a three-port substrate-integrated waveguide structure is composed of three substrate-integrated waveguides forming an angle of 120°, the three substrate-integrated waveguides have the same structure and each corresponds to three ports of the circulator. Each substrate integrated waveguide consists of two rows of parallel metallized through holes, a dielectric substrate between the two rows of parallel metallized through holes, and metal layers on the upper and lower surfaces of the dielectric substrate; between the two rows of metallized through holes The dielectric substrate is provided with a groove extending from the end position along the length direction of the substrate integrated waveguide to the ferrite central junction, and the side wall of the groove near the ferrite central junction is not in cont...

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Abstract

The invention discloses a D-band circulator, and belongs to the field of microwave passive devices. The D-band circulator comprises a ferrite center junction located in the center of the circulator and three substrate integrated waveguides which are connected with the ferrite center junction and form a Y-shaped structure, wherein the three substrate integrated waveguides respectively correspond to three ports of the circulator, the three substrate integrated waveguides are the same in structure, and each substrate integrated waveguide is provided with a groove which extends to the ferrite center junction from the end position along the length direction of the substrate integrated waveguide; the ferrite center junction is a cylinder; and a bias magnetic field perpendicular to the circulator in direction is applied to the ferrite center junction. According to the invention, the substrate integrated waveguide is used as a transmission line, so that the size of the circulator is effectively reduced; and by arranging the groove on the substrate integrated waveguide, the effective wide edge of the substrate integrated waveguide is increased, the cut-off frequency of a fundamental mode is reduced, the circulator has lower wave impedance, and the bandwidth of the circulator is improved.

Description

technical field [0001] The invention relates to microwave technology, in particular to a D-band circulator. Background technique [0002] Today, more than a hundred years after the development of wireless communication, resources in the 500MHz-5GHz frequency band in the field of military communication have become increasingly scarce. Although future quantum communication technology is worth looking forward to, it is still somewhat out of reach. The terahertz band, which was once "forgotten", integrates the advantages of microwave communication and optical communication, and has many characteristics such as high transmission rate, large capacity, strong directionality, high security and good penetration. The prospect of application is attractive, and it has become a hot spot for mining and development in various countries. The D-band frequency range is: 110-170GHz, which is located in the terahertz frequency band; and 140GHz, as one of the atmospheric windows, has the charac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/387
CPCH01P1/387
Inventor 汪晓光畅甲维王正华
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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