Digital Signal Processing

   

Microstrip Quad-Channel Diplexer Using Quad-Mode Square Ring Resonators

Authors: Jinli Zhang, Doudou Pang, Wei Wang, Haihua Chen, Ming He, Lu Ji, Xu Zhang, Xinjie

A new compact microstrip quad-channel diplexer (2.15/3.60 GHz and 2.72/5.05 GHz) using quad-mode square ring resonators is proposed. The quad-channel diplexer is composed of two quad-mode square ring resonators (QMSRR) with one common input and two output coupled-line structures. By adjusting the impedance ratio and length of the QMSRR, the resonant modes can be easily controlled to implement a dual-band bandpass filter. The diplexer show a small circuit size since it’s constructed by only two QMSRRs and common input coupledline structure while keeping good isolations (> 28 db). Good agreements are achieved between measurement and simulation.

Comments: 4 Pages.

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Submission history

[v1] 2018-03-22 05:57:02

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