Title :
Focus-Scanning Leaky-Wave Antenna With Electronically Pattern-Tunable Scatterers
Author :
Monnai, Yasuaki ; Shinoda, Hiroyuki
Author_Institution :
Dept. of Inf. Phys. & Comput., Univ. of Tokyo, Tokyo, Japan
fDate :
6/1/2011 12:00:00 AM
Abstract :
A focus-scanning leaky-wave antenna is proposed. It is based on evanescent wave scattering by electronically pattern tunable scatterers fabricated of fine cascade connections of field effect transistors (FETs). The focus is tailored by switching the FETs so that numbers of the scattered waves cause constructive interference at the target point. Our prototype achieved focus-scanning at 2.4 GHz. The proposed antenna can be used as a very low-cost and lightweight phased array especially suitable to indoor use.
Keywords :
field effect transistors; leaky wave antennas; FET; electronically pattern-tunable scatterers; evanescent wave scattering; field effect transistors; focus-scanning leaky-wave antenna; frequency 2.4 GHz; lightweight phased array; Apertures; Arrays; FETs; Microstrip; Microstrip antenna arrays; Surface impedance; Surface waves; Evanescent waves; focus-scanning; focused antennas; leaky-wave antennas; phased arrays; reconfigurable microstrip arrays;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2011.2143680
