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Electromagnetic Band Gap Loaded Square Waveguide Band-Pass Filter for Dual-Polarized Application
Institute of Electronic Science & Engineering, Nanjing University of Posts & Telecommunications, Nanjing, China
- 1 Institute of Electronic Science & Engineering, Nanjing University of Posts & Telecommunications, Nanjing, China
Wireless Engineering and Technology·Volume 03 (2012)·Pages 210–213·Published 31 October 2012·DOI10.4236/wet.2012.34030
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Abstract
An Electromagnetic Band Gap (EBG) loaded square waveguide Band-Pass Filter (BPF) is proposed in this paper. It’s simply composed by symmetrically loading periodical metal diaphragms on each wall of a square waveguide. The influences of insert sizes and loading periods on the overall BPF performances are analyzed. Experimental results agree well with those predicted. 6 GHz pass-band with insert loss less than 1 dB, 2.5 GHz stop-band and larger than 25 dB polarization isolation can be obtained. The BPF can be applied in dual-polarized waveguide-based antenna-feed systems.
KeywordsElectromagnetic Band Gap (EBG)Band-Pass Filter (BPF)Dual-PolarizedSquare Waveguide
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