Electromagnetic Band Gap Loaded Square Waveguide Band-Pass Filter for Dual-Polarized Application

Yi-Ming Tang

Institute of Electronic Science & Engineering, Nanjing University of Posts & Telecommunications, Nanjing, China.

DOI: 10.4236/wet.2012.34030                

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.

Keywords

Electromagnetic Band Gap (EBG); Band-Pass Filter (BPF); Dual-Polarized; Square Waveguide

Conflicts of Interest

The authors declare no conflicts of interest.

References

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