A novel circular ring slot antenna which has a stripline hybrid coupler feed network is proposed for generating broadband circular polarisation performance. A broad impedance bandwidth (VSWR 2:1) at 20.5%, and a CP bandwidth at 9% for a <3 dB axial ratio have been achieved
Published in:
Electronics Letters
(Volume:35
,
Issue:
25
)
Date of Publication: 9 Dec 1999