1. Front-End Rectifier of Self-Compensation Matching with Parasitic Cancellation for Dual-Band RFID Tag.
- Author
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Liu, Xianming, Chang, Yinghui, Wu, Weikang, Zhou, Zhixin, Luo, Hongyin, Xiao, Wenrun, Huang, Chao, and Guo, Donghui
- Subjects
ELECTRIC current rectifiers ,RADIO frequency identification systems ,COMPLEMENTARY metal oxide semiconductors ,VOLTAGE control - Abstract
This paper presents an innovative cross-coupled differential drive rectifier for dual-band Radio frequency identification (RFID) tags. A self-compensating rectifier with enhanced power-conversion efficiency (PCE) at low and high RF power is proposed. The proposed rectifier utilizes a self-compensating circuit, the extra two cross-couple transistors, to increase the gate voltage of transistors to control the conduction of the rectifying transistors. In order to adapt high frequency (HF) and ultrahigh frequency (UHF) rectification, the matching circuit is designed with parasitic cancellation technology. Moreover, the cascading power management circuits are added to generate a stable output voltage. The multi-standard rectifier is designed and simulated in 0. 1 8 μ m CMOS process. The simulated result shows that the proposed three-stage rectifier achieves a PCE 74% (at 5 0 0 k Ω load) when receiving a 915 MHz signal with average power of − 2 5 dBm. Moreover, the maximum efficiency achieves 56% at HF 13.56 MHz, and the final output voltage can be stabilized at a specific voltage of 1.052 V. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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