Integrated Dual-Band Filtering/Duplexing Antennas

IEEE Access

Yi Wang¹  Ying Liu²  Chun-Xu Mao³  You-Lin Geng⁴  Steven Gao⁵  Zhi-Qun Cheng⁶  Xue-Xia Yang⁷ 

[1] Department of Electronic Electrical and Systems Engineering, University of Birmingham, Birmingham, U.K.;National Laboratory of Science and Technology on Antennas and Microwaves, Xidian University, Xi&x2019;School of Electrical Engineering and Computer Science, The Pennsylvania State University, PA, USA;School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, China;School of Engineering and Digital Arts, University of Kent, Canterbury, U.K.;Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai, China;an, China;

关键词: Antenna;    dual-band;    dual-polarized;    duplexing antenna;    filtering antenna;   

DOI  :  10.1109/ACCESS.2018.2805224

来源: DOAJ

【 摘 要 】

In this paper, the state-of-the-art integrated filtering antennas with dual-band operation are first reviewed. Then, two designs of dual-band microstrip filtering antennas with a low-frequency ratio are presented. The 1^st design is a dual-band dual-polarization (DBDP) antenna with a frequency ratio of 1.2 on a single patch, by employing the coupled resonator technique. Two bands at each polarization are achieved by vertically coupling a hairpin resonator with a patch through a slot in the ground plane and then coupled to a dual-mode stub loaded resonator. Each band exhibits a 2^nd-order filtering performance with improved bandwidth and out-of-band rejection. Such an integration technique could significantly reduce the dimension and the complexity of the traditional DBDP antennas/arrays. In the 2^nd design, a novel dual-port dual-band antenna (with a frequency ratio of 1.38) with the integrated filtering and duplexing functions is proposed. The frequency duplexing function is implemented by coupling a single patch with two sets of resonator-based filtering channels via a U-slot resonator inserted in the ground. This device seamlessly integrates the functions of duplexers, filters, and antennas in a very compact structure.

【 授权许可】

Unknown