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The design of waveguide filters based on cross‐coupled resonators
Author(s) -
Shang Xiaobang,
Xia Wenlin,
Lancaster Michael J.
Publication year - 2014
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27989
Subject(s) - waveguide filter , resonator , microwave , center frequency , band pass filter , filter (signal processing) , bandwidth (computing) , prototype filter , electronic engineering , filter design , waveguide , realization (probability) , engineering , coupling (piping) , m derived filter , acoustics , physics , optics , electrical engineering , telecommunications , mathematics , mechanical engineering , statistics
This article addresses the physical realization of crosscoupled waveguide filters based on electromagnetic (EM) simulations. For this design procedure, the filter structure is simulated by successively adding one resonator at a time. The desired filter response is achieved without the need of a global optimisation on all the mechanical dimensions within an EM simulator. This reduces the design time required for a crosscoupled waveguide filter and allows the possibility of building high‐order waveguide filters with complex crosscouplings. A sixth order X‐band dual‐band filter with a center frequency of 10 GHz and a fractional bandwidth of 1% is designed using this procedure and presented here as an example. Excellent agreement between simulation results and theoretical results from coupling matrix verifies the proposed approach. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:3–8, 2014