Design of a Dual-Band Rectangular Waveguide Filter based on Direct Coupled

Authors

  • Gouni Slimane Laboratory of Electronics, Signal Processing and Microwave, Faculty of Technology, University of Dr. TaharMoulay of Saida
  • Damou Mehdi Laboratory of Electronics, Signal Processing and Microwave, Faculty of Technology, University of Dr. TaharMoulay of Saida
  • Chetioui Mohammed Laboratory of Telecommunications, Faculty of Technology, University of Abu BakrBelkaid of Tlemcen
  • Boudkhil Abdelhakim Laboratory of Telecommunications, Faculty of Technology, University of Abu BakrBelkaid of Tlemcen

Abstract

This paper presents how to design and simulate a passband rectangular waveguide filters based on direct coupled resonators operating at 12 GHz. The modeled filters are characterized by a cross coupling that produces a single attenuation pole at finite frequency used to shape the bandpass response. Resonators provide bandpass filter designs with a pseudo-elliptic response using HFSS simulators. Transmission zeros are obtained through coupling between the fundamental mode and high mode. The filter structures are validated leading to obtain transmission zeros close to the passband. The simulated waveguide filters with a centre frequency exhibit an insertion loss of -0.4/0.3dB and a return loss of −20/23dB for a bandwidth ranging from 11.85GHz to 12.15GHz that shows good electromagnetic responses for the simulated filters

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Published

2024-04-19

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Microwaves and Radiolocation