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Circularly polarised microstrip antenna array using proximity coupled feed

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3 Author(s)
Lo, W.K. ; Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, Hong Kong ; Chan, C.H. ; Luk, K.M.

A 2×2 circularly polarised (CP) microstrip antenna array using a proximity coupled feed and sequential rotation is described. As compared with a previously presented single-element circularly polarised microstrip antenna with a cross-slot, the new array achieves a much wider impedance bandwidth of 11.18% and has an axial ratio bandwidth of 4.1%. The return loss, radiation patterns and axial ratio of the antenna array were measured and are presented

Published in:

Electronics Letters  (Volume:34 ,  Issue: 23 )