The broadband aspects of stacked three-layer electromagnetically coupled circular microstrip antenna arrays are investigated experimentally. Experiments carried out on 8-element linear microstrip antenna arrays, using optimised stacked three-layer circular microstrip antenna elements, configured in E- and H-planes, have exhibited an impedance bandwidth of 20%, with a high gain and a good pattern shape with sidelobe as well as crosspolarisation levels better than -20 dB through a scan angle of 40 degrees from the broadside.
Published in:
Electronics Letters
(Volume:28
,
Issue:
21
)
Date of Publication: 8 Oct. 1992