Title :
Fourier transform using a Rotman lens
Author :
Yunhua Zhang ; Fusco, Vincent
Author_Institution :
ECIT Inst., Queen´s Univ., Belfast, Belfast, UK
fDate :
Oct. 31 2012-Nov. 2 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 CSTTM 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 :
discrete Fourier transforms; lens antennas; microstrip antenna arrays; CST; DFT amplitude functionality; Fourier Rotman lens antenna; amplitude response; antenna array pattern; discrete Fourier transform; multilayer Butler matrix solutions; 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 :
Radar Conference (EuRAD), 2012 9th European
Conference_Location :
Amsterdam
Print_ISBN :
978-1-4673-2471-7
