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Propagation of resonance cones in truncated hyperbolic transmission-line grids over ground

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3 Author(s)
Siddiqu, O.F. ; Edward S. Rogers Sr. Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada ; Balmain, K.G. ; Eleftheriades, G.V.

Resonance-cone propagation in truncated transmission-line hyperbolic grids over ground, is studied using circuit analysis and verified experimentally in microstrip grids. These structures support the propagation of resonance-cones that propagate within the grids in specific frequency-dependent spatial directions (cone-angles), a property that can be exploited to make spatial filtering and de-multiplexing devices. Analytical and experimental results show that there is no phase variation along a resonance cone. Moreover, a 180° phase variation is observed perpendicular to the cones in lossless grids, which increases in practical grids.

Published in:

Microwave Symposium Digest, 2005 IEEE MTT-S International

Date of Conference:

12-17 June 2005