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Broad-Band Differential-Fed Patch Antenna - A Novel Feeding Scheme to Realizing Stability of Radiation Characteristics

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3 Author(s)
Chin, C.-H.K. ; City Univ. of Hong Kong, Kowloon ; Quan Xue ; Hang Wong

A new bandwidth enhancement methodology for differential-fed patch antenna (DFPA) using a vertical feeding plate pair is proposed. The devised feeding approach effectually offers a very wide band impedance matching for the antenna and provides a unified gain and radiation pattern stabilization technique for performance improvement. Experimental results reveal an impedance bandwidth of more than 70% for the devised DFPA. Symmetric radiation patterns and low cross-polarization levels are realized within the band. More importantly, the antenna gain maintains high at 8.5 dBi with stable radiation patterns, hence achieving the high stability of the radiation characteristics.

Published in:

Signals, Systems and Electronics, 2007. ISSSE '07. International Symposium on

Date of Conference:

July 30 2007-Aug. 2 2007