Dielectric waveguide duplexer

Abstract

The invention provides a dielectric waveguide duplexer. The dielectric waveguide duplexer is formed by combining at least two dielectric resonators; the common port of the dielectric waveguide duplexer is provided with a metallized through hole, and the surface of the metallized through hole is plated with a metal layer; the metalized through hole is connected with a joint; a first through hole, asecond through hole and a third through hole are formed in front of and behind the metallized through hole respectively; the first through hole is located right in front of the metallized through hole; the second through hole is located on the left side behind the metallized through hole; and the third through hole is located on the right side behind the metallized through hole. According to thetechnical scheme of the invention, the problem that the dielectric resonators on the two sides of an existing dielectric waveguide duplexer are spaced from coupling blind holes by a large distance issolved; and if the coupling amount of the dielectric resonators on the two sides needs to be increased, the depth of the coupling blind holes needs to be increased, the machining difficulty is higher,and causing the technical problems that an existing dielectric waveguide duplexer is high in production difficulty and poor in batch production capacity.

Description

technical field [0001] The present application relates to the technical field of microwave communication, in particular to a dielectric waveguide duplexer. Background technique [0002] Duplexer, generally a relatively special two-way three-terminal filter composed of two filters, is the main accessory of different frequency duplex radio stations, repeaters, etc., and its function is to isolate the transmission and reception signals to ensure reception and launch both work fine at the same time. [0003] The existing duplexers include dielectric waveguide duplexers and metal cavity duplexers, etc. Compared with metal cavity duplexers, the size and weight of the product can be greatly reduced, so it will gradually become a part of the future development of duplexers. a trend. [0004] Most of the dielectric waveguide duplexers use the common port excitation method to transfer energy to the dielectric resonators on both sides, that is, by adding a coupling blind hole at the ...

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Problems solved by technology

[0005] The purpose of this application is to provide a dielectric waveguide duplexer to solve the problem that there is a large distance between the dielectric resonators on both sides of the existing dielectric waveguide duplexer and the coupling blind hole. However, the deeper the coupling blind hole, the more difficult it is to control the accuracy and the higher the processing difficulty. Therefore, the existing dielectric waveguide duplexer is difficult to produce and the mass production capacity is weak. question

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