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2 years ago in Electrical Engineering , RF & Antenna Design By Veena
I’m trying to suppress surface waves in a high-frequency patch antenna to improve gain and reduce mutual coupling. How effective are Photonic Bandgap (PBG) structures, and what’s a practical implementation?
My patch antenna on a thick, high-dielectric substrate suffers from poor gain and pattern distortion due to surface wave excitation. I've read about etching PBG lattices in the ground plane. Does this really work for a single patch, or is it more suited for arrays? What are the key design parameters—lattice period, hole/pattern shape—and how do they relate to my operating frequency (say, 28 GHz)? Are there significant trade-offs, like increased back-lobe radiation or fabrication complexity?
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By Debashis Mohapatra Answered 2 months ago
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