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Electronic Full-Space Scanning With 1-D Fabry–Pérot LWA Using Electromagnetic Band-Gap

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4 Author(s)
Guzman-Quiros, R. ; Technol. of Inf. & Commun., Univ. Politec. de Cartagena, Cartagena, Spain ; Gomez-Tornero, J.L. ; Weily, A.R. ; Guo, Y.J.

A novel mechanism to obtain full-space electronic scanning from a half-space scanning one-dimensional (1-D) Fabry-Pérot (FP) leaky-wave antenna (LWA) is proposed and experimentally demonstrated in this letter. By using a central feed that divides the structure into two independently controlled leaky lines, one each side, and making use of the electromagnetic band-gap (EBG) region of the FP resonator, the antenna can be electronically tuned to operate in three different regimes: backward scanning, forward scanning, and broadside radiation. Leaky-mode dispersion theory and experimental results of a fabricated prototype demonstrate a continuous electronic scanning from -25° to +25° at 5.5 GHz.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )