Title :
Four-element varactor diode loaded polarisation-agile microstrip antenna array
Author :
Haskins, P.M. ; Dahele, J.S.
Author_Institution :
Sch. of Eng. & Appl. Sci., Cranfield Univ., Shrivenham, UK
fDate :
7/3/1997 12:00:00 AM
Abstract :
A square, varactor diode-loaded polarisation-agile microstrip patch, radiating either circular polarisation (left or right hand) or linear polarisation (in two orthogonal planes) is described. A linear array comprising four such patches has been designed. Measurements show, when operated in circular polarisation, axial ratios better than 0.5 dB and, in linear polarisation, cross-polar levels better than -20 dB
Keywords :
antenna radiation patterns; microstrip antenna arrays; varactors; axial ratio; circular polarisation; cross-polar level; linear array; linear polarisation; square patch; varactor diode loaded polarisation-agile microstrip antenna array;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970801
