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Alternative approaches for minimizing surface wave effects on phased array antennas

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2 Author(s)
Fathy, A.E. ; Dept. of Electr. & Comput. Eng., Tennessee Univ., Knoxville, TN, USA ; ElSherbiny, M.

A dielectric sheet in contact with the radiating structure of a phased array gives rise to scan volume limited by blind spots arising in phase synchronization of one of the Floquet modes with a guided surface wave. Different ways can be utilized to reduce the effects of surface wave propagation such as introducing a gap between the dielectric (cover) and the planar/conformal antenna, appropriate reactive loading of the surface of the antenna, or the inclusion of a high Z surface either on the surface or on the ground plane. These different methods are analyzed and compared for convenient optimum utilization.

Published in:

Antennas and Propagation Society International Symposium, 2004. IEEE  (Volume:4 )

Date of Conference:

20-25 June 2004