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Design of Two‐Dimensional 90° Filtering Couplers Based on Combined 90° and 180° Couplers

Year: 2025

Type: article

Abstract: ABSTRACT This letter proposes a novel approach to design two‐dimensional (2‐D) 90° filtering coupler. Compared with the conventional 2‐D 90° coupler composed of four 90° couplers, this approach first introduces filtering characteristics by replacing two of the 90° couplers with 180° filtering couplers cascaded with a 90° phase shifter, and then uses a filtering crossover instead of the conventional crossover to further improve the selectivity of the filter. The comprehensive design methodology and synthesis approach for the 2‐D filtering coupler are presented. To validate the proposed concept, a 2‐D 90° filtering coupler was devised, fabricated, and tested. The measured data align closely with simulation results, thereby confirming the effectiveness of the proposed circuit design.

Source: Microwave and Optical Technology Letters

DOI: 10.1002/mop.70345

Authors: Qiang Shao, Yi Lu, Rui‐Sen Chen, Guan‐Long Huang, Fu‐Chang Chen, Yi Wang, Xian‐Hui He, Mustafa K. Taher Al‐Nuaimi

Institutions: Foshan University, State Key Laboratory of Millimeter Waves, Southeast University, South China University of Technology, University of Birmingham

Language: English

Topic: Microwave Engineering and Waveguides

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W4413204283

FWCI:

Cites: 24

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Related to: 10