RF Energy Harvesting System with a Mini Branch-Line Coupler for Monitoring Railway Conditions

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

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Detail(s)

Original languageEnglish
Title of host publicationPowerMEMS 2023 - The 22nd International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications
PublisherIEEE
Pages296-299
Number of pages4
ISBN (electronic)979-8-3503-4421-9
Publication statusPublished - 11 Dec 2023

Publication series

NamePowerMEMS - IEEE 22nd International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

Conference

Title22nd International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS 2023)
LocationNYUAD Conference Center
PlaceUnited Arab Emirates
CityAbu Dhabi
Period11 - 14 December 2023

Abstract

The rail transportation system has been a cornerstone of the modern economy due to its low cost and environmental sustainability. However, the rapid expansion of railway mileage and the aging of existing infrastructure have posed challenges for efficient and widespread rail inspection systems. Existing approaches are hindered by their high costs and the occupation of tracks. In this study, we present a high-efficiency RF energy harvesting system using a mini-branch line coupler (Mini-BLC) for railway monitoring. The Mini-BLC effectively reduces the return loss caused by impedance mismatch and optimizes the high-efficiency region for high-power input. Using T-shape equivalent circuits, the size of mini-BLC is reduced by 30%. The wireless-powered sensor tag (WPST) exhibits an overall efficiency of 26.3% at the input power of 8 dBm, which is 33% higher than the efficiency of the conventional scheme at the same input power. The presented strategy is generalizable for developing multi-functional RF energy-powered systems with other frequency bands and power regions.

©2023 IEEE

Research Area(s)

  • Branch-line Coupler, Internet of Things, RF Energy Harvesting, Size Reduction, Wireless Monitoring System

Bibliographic Note

Research Unit(s) information for this publication is provided by the author(s) concerned.

Citation Format(s)

RF Energy Harvesting System with a Mini Branch-Line Coupler for Monitoring Railway Conditions. / Wang, Yuanyi; Li, Pengyu; Zhang, Zhuomin et al.
PowerMEMS 2023 - The 22nd International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications. IEEE, 2023. p. 296-299 (PowerMEMS - IEEE 22nd International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications).

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review