A DUAL-PORT SUM-DIFFERENCE BEAM ANTENNA WITH SIMPLE STRUCTURE AND VERY HIGH ISOLATION | Zendy

Zhichao Deng | Zendy; FuShun Zhang | Zendy; Min Liang | Zendy; Ya-Li Yao | Zendy; Fan Zhang | Zendy

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A DUAL-PORT SUM-DIFFERENCE BEAM ANTENNA WITH SIMPLE STRUCTURE AND VERY HIGH ISOLATION

Author(s) -

Zhichao Deng,

FuShun Zhang,

Min Liang,

Ya-Li Yao,

Fan Zhang

Publication year - 2017

Publication title -

progress in electromagnetics research c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 34

ISSN - 1937-8718

DOI - 10.2528/pierc17031303

Subject(s) - isolation (microbiology) , port (circuit theory) , simple (philosophy) , dual (grammatical number) , antenna (radio) , beam (structure) , physics , computer science , telecommunications , optics , engineering , electronic engineering , biology , bioinformatics , art , philosophy , literature , epistemology

A simple dual-port sum-difference beam antenna with high isolation is proposed. A Tshaped slot is utilized to achieve both sum-difference beam pattern and high port-isolation. The slot coupling feeding structure simplifies the feeding network and avoids complicated fabrication. The proposed antenna is simulated, fabricated and measured. Experimental validations confirm that the antenna has 10-dB impedance bandwidths of 10.2% (4.82–5.33GHz) for the sum port and 2.0% (4.95– 5.05GHz) for the difference port, respectively. In addition, high port-isolation better than 50 dB is achieved covering a wide band from 4.0GHz to 5.5GHz. The proposed antenna exhibits a measured peak gain of 6.3 dBi for the sum beam and a null depth better than −26 dB for the difference beam. Measured results agree well with simulated ones.

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