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An Integrated Filtering Antenna Array With High Selectivity and Harmonics Suppression

Mao, Chun-Xu, Gao, Steven, Wang, Yi, Wang, Zhengpeng, Qin, Fan, Sanz-Izquierdo, Benito, Chu, Qing-Xin (2016) An Integrated Filtering Antenna Array With High Selectivity and Harmonics Suppression. IEEE Transactions on Microwave Theory and Techniques, . pp. 1798-1805. ISSN 0018-9480. (doi:10.1109/TMTT.2016.2561925)

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http://doi.org/10.1109/TMTT.2016.2561925

Abstract

In this paper, a new design of an antenna array with integrated functions of filtering, harmonics suppression, and radiation is proposed. The device employs a multi-port network of coupled resonators, which is synthesized and designed as a whole to fulfill the functions of filtering, power combination/division, and radiation. The 50-? interfaces between the cascaded filter, power divider, and antenna in traditional RF front-ends are eliminated to achieve a highly integrated and compact structure. A novel resonator-based four-way out-of-phase filtering power divider is proposed and designed. It is coupled to the patch array, rendering a fourth-order filtering response. The coupling matrix of the resonator network is synthesized. The physical implementations of the resonators and their couplings are detailed. Compared to a traditional patch array, the integrated filtering array shows an improved bandwidth and frequency selectivity. In addition, the harmonic of the antenna array is suppressed due to the use of different types of resonators. To verify the concept, a 2x2 filtering array at S-band is designed, prototyped, and tested. Good agreement between simulations and measurements has been achieved, demonstrating the integrated filtering antenna array has the merits of wide bandwidth, high frequency selectivity, harmonics suppression, stable antenna gain, and high polarization purity.

Item Type: Article
DOI/Identification number: 10.1109/TMTT.2016.2561925
Uncontrolled keywords: Bandwith, filtering antenna array, frequency selectivity, harmonics suppression, integrated design
Subjects: T Technology
Divisions: Faculties > Sciences > School of Engineering and Digital Arts > Broadband & Wireless Communications
Depositing User: Tina Thompson
Date Deposited: 02 Jun 2016 13:28 UTC
Last Modified: 11 Feb 2020 04:08 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/55774 (The current URI for this page, for reference purposes)
Sanz-Izquierdo, Benito: https://orcid.org/0000-0001-7313-2520
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