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Corrugations for suppressing undesired wave propagation in the transverse direction in a 45° linearly polarized 76 GHz parallel-plate waveguide two-dimensional slot-array

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6 Author(s)
Shulabh Gupta ; Department of Electrical Engineering, École Polytechnique de Montréal, Québec, H3T 1J4, Canada ; Christophe Caloz ; Miroslav Samardzija ; She Yuanfeng
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A novel mechanism based on corrugations is proposed to control undesired oblique wave propagation inside a parallel plate waveguide existing in the presence of 45° polarized radiating slots. The improvement in the near-field aperture distribution is demonstrated experimentally by aperture field measurement in a new slot array antenna incorporating these corrugations. Only marginal directivity improvement is observed and the measured gain is lower than in the original antenna (without corrugations) due to larger dissipative loss in the structure. However, it is argued that the proposed corrugated structure has the potential to improve the overall 2D slot array antenna performance after further optimization.

Published in:

Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on

Date of Conference:

3-8 July 2011