Title :
Lens antennas with beam shaping capabilities at the feed level
Author :
Nguyen, N.T. ; Sauleau, R. ; Le Coq, L.
Author_Institution :
IETR, Univ. of Rennes 1, Rennes
Abstract :
The performances of focal array fed lenses have been studied for beam diversity applications. We have shown that optimizing the feed sub-arrays enables one to achieve very attractive radiation characteristics without using sophisticated techniques based on shape optimization. A specific and powerful design methodology based on FDTD and GA has been proposed to synthesize reconfigurable integrated lens antenna. It has been validated numerically through the design of several extended hemispherical ILAs producing flat-top and multiple shaped beams.
Keywords :
antenna arrays; antenna feeds; diversity reception; finite difference time-domain analysis; genetic algorithms; lens antennas; FDTD; GA; beam diversity; beam shaping; feed sub-array; flat-top beams; focal array fed lenses; hemispherical ILA design; multiple shaped beams; reconfigurable integrated lens antenna; Antenna feeds; Design methodology; Finite difference methods; Lenses; Linear antenna arrays; Microstrip antenna arrays; Microstrip antennas; Optical design; Phased arrays; Time domain analysis;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4958571
