Compact Harmonic Feedback Rectennas for Low Power Battery-Free IoT Applications

Zhang, Jinyao, Song, Chaoyun, He, Yejun, Shi, Jiupei, Zhou, Jiafeng ORCID: 0000-0001-5829-3932 and Huang, Yi ORCID: 0000-0001-7774-1024 (2024) Compact Harmonic Feedback Rectennas for Low Power Battery-Free IoT Applications In: 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI), 2024-7-14 - 2024-7-19.

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Abstract

We propose a novel design of rectennas with harmonic feedback capability, tailored for battery-free IoT applications that operate at low input power levels. This rectenna design is based on the voltage doubler rectification topology. By integrating a quarter-wave stub, the rectifier achieves both DC conversion and harmonic feedback using just two Schottky diodes. We also introduce a single-port design that employs an impedance transformation network. This design allows the RF input and the harmonic output of the harmonic feedback rectifier to share the same port. Consequently, it reduces the number of transceiver antennas required. Preliminary measurement results presented in this work confirm and demonstrate the circuit's capability to efficiently perform RF to DC conversion and harmonic feedback even at lower input power levels.

Item Type:	Conference Item (Unspecified)
Uncontrolled Keywords:	46 Information and Computing Sciences, 40 Engineering, 4008 Electrical Engineering, 4009 Electronics, Sensors and Digital Hardware, 7 Affordable and Clean Energy
Divisions:	Faculty of Science & Engineering Faculty of Science & Engineering > School of Electrical Engineering, Electronics and Computer Science
Depositing User:	Symplectic Admin
Date Deposited:	13 Jan 2025 09:42
Last Modified:	23 May 2026 09:24
DOI:	10.1109/AP-S/INC-USNC-URSI52054.2024.10686438
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3189661
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