Title :
Experimental investigation of three-layer electromagnetically coupled circular microstrip antennas
Author :
Revankar, U.K. ; Kumar, A.
Author_Institution :
Electron. & Radar Dev. Establ., Bangalore, India
fDate :
6/20/1991 12:00:00 AM
Abstract :
The broadband behaviour of a three-layer electromagnetically coupled circular microstrip antenna is investigated experimentally. The effects of interlayer spacings and the thickness of the parasitic layers on the impedance bandwidth, 3 dB beamwidth and pattern shape, are studied. Experiments show that this structure can provide a frequency bandwidth as high as 20% with a low crosspolarisation level and a moderately high gain.
Keywords :
antenna radiation patterns; microstrip antennas; 3 dB beamwidth; broadband behaviour; circular microstrip antennas; electromagnetically coupled; impedance bandwidth; interlayer spacings; low crosspolarisation level; microwave antennas; parasitic layer thickness; pattern shape; three-layer;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19910740
