Vol. 86

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2019-08-28

Differentially-Fed, Multi-Band Dual-Polarized Filtering Patch Antenna Without Extra Circuits

By Jianfang Deng and Lanping Feng
Progress In Electromagnetics Research Letters, Vol. 86, 129-136, 2019
doi:10.2528/PIERL19071204

Abstract

In this paper, a differentially-fed, multi-band patch antenna with bandpass filtering response is proposed. The antenna consists of two pairs of crossed dipoles, four Γ-shaped feedlines, and four steeped-impedance microstrip lines. With the introduction of Γ-shaped feedlines and U-shaped slots on the radiating patch, extra radiation nulls are induced, four operation bands with band-pass filtering response are obtained. More importantly, the filtering response of the antenna is generated without any filtering circuit, which is easy to design for antenna engineers. Measured results of the prototype show that the proposed antenna has stable radiation patterns with low cross-polarization of better than -26 dB. Besides, bandpass filtering response of the realized gain with deep roll-off can also be observed between different operation bands. Excellent radiating performance make it a promising candidate for 5G wireless communication systems.

Citation


Jianfang Deng and Lanping Feng, "Differentially-Fed, Multi-Band Dual-Polarized Filtering Patch Antenna Without Extra Circuits," Progress In Electromagnetics Research Letters, Vol. 86, 129-136, 2019.
doi:10.2528/PIERL19071204
http://www.jpier.org/PIERL/pier.php?paper=19071204

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