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Broad-band suspended probe-fed plate antenna with low cross-polarization levels

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2 Author(s)
Zhi Ning Chen ; Centre for Wireless Commun., Nat. Univ. of Singapore, Singapore ; Chia, M.Y.W.

A new feeding scheme for enhancing the radiation performance of a suspended plate antenna with a broad bandwidth is presented experimentally. By means of a probe-fed half-wavelength strip, the high cross-polarization levels of the suspended plate antenna are suppressed effectively, which result mainly from the undesired excitation of higher-order modes. Measurements on the antenna with the proposed feeding structure have demonstrated the good performances with a high ratio of co- to cross-polarization levels and stable radiation patterns across a 20% bandwidth for VSWR≤2 : 1.

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Antennas and Propagation, IEEE Transactions on  (Volume:51 ,  Issue: 2 )