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Broadband patch antenna with low cross-polarisation

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4 Author(s)
Chin, C.H.K. ; Dept. of Electron. Eng., City Univ. of Hong Kong ; Xue, Q. ; Wong, H. ; Zhang, X.Y.

A broadband differential-fed patch antenna with good radiation pattern is proposed. Unlike conventional differential-fed patch antennas, the proposed antenna employs a folded plate pair as the differential feeding scheme. To demonstrate the devised feeding approach, impedance bandwidth of up to 74% (SWR<2) has been achieved. More importantly, symmetric radiation pattern, low-cross polarisation level and stable radiation pattern are realised within the band

Published in:

Electronics Letters  (Volume:43 ,  Issue: 3 )