Title :
Offset Fresnel lens antenna
Author :
Guo, Y.J. ; Sassi, I.H. ; Barton, S.K.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bradford Univ., UK
fDate :
12/1/1994 12:00:00 AM
Abstract :
An analysis of the offset Fresnel lens antenna is presented using the vectorial Kirchhoff diffraction theory. Equations for predicting the copolarised and crosspolarised radiation patterns are given. Two approaches to evaluating the far-field integration are introduced. Antenna performance such as the sidelobe and the cross-polarisation levels is investigated. An experimental offset Fresnel lens is reported. Measured results agree well with the theoretical prediction
Keywords :
Fresnel diffraction; antenna radiation patterns; antenna theory; lens antennas; copolarised radiation patterns; cross-polarisation levels; crosspolarised radiation patterns; far-field integration; offset Fresnel lens antenna; sidelobe levels; vectorial Kirchhoff diffraction theory;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:19941310
