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Leaky-mode dispersion analysis in parallel-plate waveguides loaded with FSS and AMC with application to 1D leaky-wave antennas

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6 Author(s)
Garcia-Vigueras, M. ; Tech. Univ. of Cartagena, Cartagena, Spain ; Gomez-Tornero, J.L. ; Goussetis, G. ; Canete, D.
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Partially reflecting surface (PRS) antennas have attracted considerable interest in recent years due to their ability to conceive high-directivity low-profile broadside 2D antennas with simple configurations. On the other hand, ID leaky-wave antennas (LWA) combining a waveguide and printed circuits have shown the ability to flexibly control the phase velocity and the radiation-rate of the leaky- mode, thus allowing to taper the radiation pattern to obtain different pointing angles, radiation efficiencies and sidelobes distribution. In this contribution, we present a novel ID LWA structure, composed by a parallel-plate waveguide (PPW) loaded with a Frequency Selective Surface (FSS) and an Artificial Magnetic Conductor (AMC). This novel type of ID LWA provides an interesting mechanism to control the radiation properties of TE leaky-modes. This structure offers a different mechanism to control the leaky-waves from the one proposed in [4-5], and it is extensible to 2D PRS-LWA. The top FSS acts as a PRS, controlling with its reflection magnitude the level of the leakage-rate associated to the leaky-mode. On the other hand, the reflection phase of the bottom AMC determine the pointing angle of the leaky-mode.

Published in:

Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE

Date of Conference:

1-5 June 2009