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A wideband dual-polarized antenna with very low back radiation

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2 Author(s)
Mingjian Li ; Electron. Eng., City Univ. of Hong Kong, Hong Kong, China ; Kwai-Man Luk

A wideband ±45° dual-polarized antenna based on the magneto-electric dipole is excited by a new feeding technique. The common impedance bandwidth is from 1.69GHz to 2.76GHz (48.1%) with SWR≤1.5. The isolation between the two ports is larger than 30dB. The gains of the proposed antenna vary in the range of 7.6-9.3dBi and 7.6-9.4dBi for port 1 and port 2 respectively in the operating frequency range. Due to its complementary nature (or Huygens' source), the proposed antenna has a stable radiation pattern with a low cross-polarization level of less than -21dB and a low back radiation level of less than -29dB.

Published in:

Microwave Conference Proceedings (APMC), 2012 Asia-Pacific

Date of Conference:

4-7 Dec. 2012