A Broadband Multimode Filter Ring Coupler Using a Cavity

Abstract

The invention discloses a broadband multimode filtering ring coupler adopting a cavity, comprising a cylindrical cavity, a first port, a second port, a third port and a fourth port, the first port, the second port, the The three ports and the fourth port are all arranged on the side wall of the cylindrical cavity, and the first port, the second port, the third port and the fourth port are respectively provided with a first conductor assembly, a second conductor assembly, and a third conductor component and the fourth conductor component, the first conductor component, the second conductor component, the third conductor component and the fourth conductor component are arranged in sequence on the side wall of the cylindrical cavity, and the gap between the first conductor component and the second conductor component The included angle, the included angle between the second conductor component and the third conductor component, and the included angle between the third conductor component and the fourth conductor component are all 45 degrees. The ring coupler of the invention has the advantages of good DC blocking effect, high rectangularity and wide fractional bandwidth, and can meet the requirements of communication systems.

Description

technical field [0001] The invention relates to a ring coupler, in particular to a broadband multimode filter ring coupler using a cavity, belonging to the field of microwave and millimeter wave communication. Background technique [0002] Ring couplers have been widely used in microwave and millimeter wave communication systems, such as mixers, amplifiers, multiplexers, etc. must use ring couplers. Such as figure 1 As shown, the traditional ring coupler uses a ring planar structure with narrow bandwidth, low power capacity, low Q value, poor DC blocking effect, and poor filtering function due to poor waveform squareness. The disadvantages are more obvious. Contents of the invention [0003] The purpose of the present invention is to solve the defects of the above-mentioned prior art, and to provide a broadband multimode filtering ring coupler using a cavity, which has the advantages of good DC blocking effect, high squareness, and wide fractional bandwidth Advantages, ...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the traditional ring coupler uses a ring planar structure with narrow bandwidth, low power capacity, low Q value, poor DC blocking effect, and poor filtering function due to poor waveform squareness. The disadvantage is obvious

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