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International Journal of Antennas and Propagation - Volume 2017 2017, Article ID 9364275, 6 pages -

Research ArticleKey Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China

Correspondence should be addressed to Dakui Wu

Received 6 October 2016; Revised 5 December 2016; Accepted 19 December 2016; Published 18 January 2017

Academic Editor: N. Nasimuddin

Copyright © 2017 Dakui Wu and Guoxin Zheng. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A novel kind of compact dual-band quadrature patch coupler for vehicular beam-forming array is proposed for the first time in this paper. To keep the performance of the first operating frequency 2.4 GHz for Bluetooth Low Energy BLE and generate the second operating frequency 5.9 GHz for Dedicated Short Range Communications DSRC simultaneously, complementary triangular split resonant rings CTSRRs and splitting gaps are employed to improve the performance of this new coupler; final size of the proposed coupler is for 2.4 GHz. To validate the performance and design method of the coupler this paper proposed, a 3D model is constructed and optimized with ANSOFT HFSS firstly and then a coupler prototype is fabricated and measured. The measured results show that the amplitude unbalance AU is 0.54 dB and 0.44 dB for 2.4 GHz and 5.9 GHz, respectively, and the corresponding phase unbalance PU is 93.5 and 92 degrees, respectively.

Autor: Dakui Wu and Guoxin Zheng



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