Design and Implementation of a Novel Directional Coupler for UHF RFID Reader

Journal Title: Elektronika - Year 2016, Vol 20, Issue 1

Abstract

The directional coupler is applied to isolating RX from TX because of low cost and simplicity compared to the circulator in the radio-frequency identification (RFID) reader. Because of unequal phase velocity between odd and even mode, the drawback of the traditional microstrip directional coupler is poor isolation. In this paper, to obtain a good isolation between RX and TX, a novel directional coupler is proposed to be applied to the UHF RFID system with a single antenna. Measurement result shows that the proposed directional coupler possesses a good isolation of -35dB in operating frequency band.

Authors and Affiliations

Jianxiong Li, Shanlin Song, Xiaoyu Chen, Hua Nian, Weiguang Shi

Keywords

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  • EP ID EP362513
  • DOI 10.7251/ELS1620022L
  • Views 83
  • Downloads 0

How To Cite

Jianxiong Li, Shanlin Song, Xiaoyu Chen, Hua Nian, Weiguang Shi (2016). Design and Implementation of a Novel Directional Coupler for UHF RFID Reader. Elektronika, 20(1), 22-26. https://europub.co.uk/articles/-A-362513