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Proximity-coupled and dual-polarized microstrip patch antenna for WCDMA base station arrays

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1 Author(s)
Saily, J. ; VTT Tech. Res. Centre of Finland, Helsinki

A novel dual-polarized microstrip patch antenna is presented. The antenna uses proximity-coupled microstrip feed lines along the patch corners and covers the full WCDMA/UMTS band with only a single radiating patch. The corner-fed patch arrangement results in two orthogonal linear polarizations along the patch diagonals with high isolation. The presented antenna can be applied in dual-slant polarized base station antenna arrays. The measured input matching of both ports at TX&RX bands of 1920-1980 MHz and 2110-2170 MHz is below -13.8 dB and the polarization isolation is more than 30 dB. Measured gain is about 10 dBi, and half-power beamwidths in the horizontal plane about 45deg -55deg . Cross-polarization is better than -22.5 dB.

Published in:

Microwave Conference, 2006. APMC 2006. Asia-Pacific

Date of Conference:

12-15 Dec. 2006