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Agile Radiation-Pattern Antenna Based on Active Cylindrical Frequency Selective Surfaces

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2 Author(s)
Mahmoud Niroo Jazi ; INRS-EMT, Universit de Qubec, Montreal ; Tayeb A. Denidni

The design and implementation of an agile antenna at 2.45 GHz based on a grid of discontinuous strips incorporated with active elements on a cylindrical frequency selective surface (FSS) are presented. By benefiting from the feature introduced in the proposed surface, a reconfigurable stopband screen is created to emulate a cylindrical electromagnetic transparent/opaque surface. This surface is used to implement a sweeping-beam agile antenna covering all azimuth angles. The measured results confirm the concept of the proposed configuration. This antenna can effectively operate over a bandwidth of more than 200 MHz. Furthermore, the achieved back-lobe level for the directional radiation pattern is about -13 dB at the frequency of 2.55 GHz.

Published in:

IEEE Antennas and Wireless Propagation Letters  (Volume:9 )