Design of a Dual-Band Dual-Polarization Array Antenna with Improved Bandwidth for AMRFC Radar Application

Youngki LEE  Deukhyeon GA  Daesung PARK  Seokgon LEE  Jaehoon CHOI  

IEICE TRANSACTIONS on Communications   Vol.E96-B    No.1    pp.182-189
Publication Date: 2013/01/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E96.B.182
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Antennas and Propagation
dual-band,  dual-polarization,  bandwidth,  AMRFC,  radar,  

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A dual-band dual-polarization array antenna with improved bandwidth for an advanced multi-function radio function concept (AMRFC) radar application is proposed. To improve the S-band impedance bandwidth, the proposed antenna uses modified coupling feed patch. The measured bandwidth of the prototype array is 19.8% and 25.7% for the S- and X-band, respectively. The isolation between the two orthogonal polarizations is higher than 15 dB and cross-polarization level is less than -17 dB for both S- and X-bands.