期刊
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
卷 31, 期 2, 页码 200-203出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2020.3043793
关键词
Uplink; Harmonic analysis; Wireless communication; P-i-n diodes; Wireless sensor networks; Radio frequency; Power system harmonics; Rectifier; transmitter architecture; uplink; wireless power transmission (WPT)
资金
- NFSC [62071316]
This letter introduces a novel integrated rectifier-transmitter (IRT) to reduce the power consumption of uplink communication in wireless sensors. Experimental results demonstrate that the proposed IRT can achieve an uplink data rate of up to 100 kb/s.
A novel integrated rectifier-transmitter (IRT) that targets to reduce the power consumption of the uplink communication of a wireless sensor is presented in this letter. The proposed IRT fully utilizes the second harmonic generated by the rectifier as the uplink carrier and modulates this carrier in amplitude through a reconfigurable bandstop filter (BSF) that is dynamically biased by the uplink baseband signal. As a proof of concept, an IRT prototype operating at 2.4 GHz has been implemented and characterized. We report the power conversion efficiency (PCE) to prove that the modulation does not affect the rectification of IRT. An uplink data rate of 100 kb/s has been demonstrated when the IRT is fed with -20-dBm RF power.
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