Title :
Fourier Transform using a Rotman Lens
Author :
Yunhua Zhang ; Fusco, Vincent
Author_Institution :
ECIT Inst., Queen´´s Univ., Belfast, UK
fDate :
Oct. 29 2012-Nov. 1 2012
Abstract :
In this paper, the design constraints that are required for a Rotman lens to realize discrete Fourier transform (DFT) amplitude and phase functionality are derived. A Fourier Rotman lens has been designed, fabricated and validated. The amplitude and phase response and the array pattern based on the CST™ results are validated with the theoretical DFT results. To the best of the authors´ knowledge, this is the first Fourier Rotman lens to be fabricated and validated. The solution provided replaces multilayer Butler matrix solutions with a simple single layer microstrip technology.
Keywords :
antenna arrays; discrete Fourier transforms; lens antennas; matrix algebra; CST; DFT amplitude; Fourier Rotman lens; amplitude response; array pattern; discrete Fourier transform; multilayer Butler matrix; phase functionality; phase response; single layer microstrip technology; Arrays; Butler matrix; Discrete Fourier transforms; Lenses; Microwave communication; Microwave imaging; Butler matrix; Fourier transform; Rotman lens; beam forming network;
Conference_Titel :
Microwave Conference (EuMC), 2012 42nd European
Conference_Location :
Amsterdam
Print_ISBN :
978-1-4673-2215-7
Electronic_ISBN :
978-2-87487-026-2
