Wideband Harmonic Backscattering Rectifier for Energy-Efficient Localization in Wireless Power Transfer Systems
- Authors
- Lee, Namkyung; Lee, Daju; Oh, Juntaek
- Issue Date
- Nov-2023
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Harmonic backscattering; localization; nonlinear detection; rectifier; second harmonic; wireless power transfer (WPT)
- Citation
- IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS, v.33, no.11, pp 1568 - 1571
- Pages
- 4
- Journal Title
- IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS
- Volume
- 33
- Number
- 11
- Start Page
- 1568
- End Page
- 1571
- URI
- https://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/49295
- DOI
- 10.1109/LMWT.2023.3317429
- ISSN
- 2771-957X
2771-9588
- Abstract
- This study proposes a wideband harmonic backscattering rectifier (HBR) for accurate localization of a device using a second harmonic signal. To backscatter the second harmonic signal with efficient rectification, the proposed transmission-line-based impedance control network (TICN) functions as a dc pass and fundamental frequency stop filter and classifies the dc and second harmonic signals generated from the diode. The TICN with a second harmonic matching network moved the input impedance observed in the dc load to 0 $\Omega $ at $f_{0}$ and matched it to the second harmonic load at 2 $f_{0}$ . The proposed HBR was fabricated with dimensions of 33 $\times$ 30 mm. The measured power conversion efficiency (PCE) was maintained over 50% within 2.3-2.9 GHz at 27.3 dBm of input power. A peak conversion gain (CG) of over $-$ 12 dB is measured within the wide frequency range. An antenna beam alignment experiment was performed to verify the feasibility of the HBR.
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