Mao, Chun-Xu, Gao, Steven, Wang, Yi, Qin, Fan and Chu, Qing-Xin (2016) Compact highly integrated planar duplex antenna for wireless communications. IEEE Transactions on Microwave Theory and Techniques, 64 (7). pp. 2006-2013. ISSN 0018-9480 (doi:https://doi.org/10.1109/TMTT.2016.2574338)

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Abstract

This paper proposes a novel concept of an integrated duplex antenna for realizing a compact multifunction RF front end by integrating a duplexer and a dual-band patch antenna. First, an all-resonator-based duplexer is designed. It is composed of two sets of split-ring resonators as channel filters, which are joined by a dual-mode stub-loaded resonator as the junction resonator. Then, a novel dual-band patch antenna is achieved by coupling a patch with a hairpin resonator through a slot in the ground. Uniform radiation characteristics have been achieved across the two bands. Finally, the duplexer is integrated with the dual-band patch antenna to form a highly integrated duplex antenna by coupling the hairpin resonator to the junction resonator of the duplexer directly. In this process, the 50-Omega interface and matching network between them are removed, contributing to a compact footprint. The details of co-design approach have been discussed in this paper. Compared with the traditional cascaded duplexer and antennas, this paper is much more compact and integrated but with an improved frequency response. A prototype of an integrated duplex antenna at S-band is fabricated and measured, showing two operation channels of 2.52-2.65 GHz for transmitting and 2.82-2.94 GHz for receiving with an isolation of over 32 dB. The measured results agree well with the simulation results.

Item Type:	Article
Uncontrolled Keywords:	Dual-band antenna, duplex antenna, duplexer, split-ring resonator (SRR), stub-loaded resonator (SLR)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > School of Engineering (ENG)
Last Modified:	12 Sep 2017 11:06
URI:	http://gala.gre.ac.uk/id/eprint/15777

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