Highly Efficient Wideband mmWave Rectennas for Wireless Power Transfer System with Low-Cost Multi-Node Tracking Capability

Chaoyun Song, Lei Wang, Ping Lu, Cheng Zhang, Zhensheng Chen, Xuezhi Zheng, Yejun He, George Goussetis, Guy A. E. Vandenbosch, Yi Huang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
168 Downloads (Pure)

Abstract

An innovative wireless power transfer (WPT) system utilizing millimeter-wave (mmWave) power for multinode charging and tracking is presented in this article. The core concept of the system revolves around the utilization of frequency-dispersive leaky-wave antenna (LWA) transmitters, enabling passive beam scanning in the far field without the need for active phased arrays. However, such a system requires a breakthrough in receiving rectenna design at mmWave frequencies, encompassing a wide frequency bandwidth, wide beamwidth, and high RF-to-dc conversion efficiency beyond 20 GHz. In this work, we introduce a pioneering mmWave rectenna design achieved through the codesign integration of a magnetoelectric (ME) dipole and high-frequency diodes, eliminating the need for complex impedance matching networks at mmWave frequencies. The proposed rectenna operates in the frequency range of 24-34.5 GHz, achieving over 50% RF-to-dc conversion efficiency for input powers exceeding 15 dBm. In addition, the rectenna demonstrates improved gain and beamwidth compared to conventional designs, enabling wide-angle reception of frequency-scanning passively beamformed mmWave signals. A practical demonstration of the proposed system showcases simultaneous wireless charging of three nodes, highlighting its notable advantages in terms of mobility, cost-effectiveness, and simplicity over conventional WPT technologies.

Original languageEnglish
Pages (from-to)8773-8787
Number of pages15
JournalIEEE Transactions on Antennas and Propagation
Volume71
Issue number11
Early online date13 Sept 2023
DOIs
Publication statusPublished - Nov 2023

Keywords

  • Array signal processing
  • Costs
  • Millimeter wave communication
  • Phased arrays
  • Rectennas
  • Wideband
  • Wireless power transfer
  • leaky-wave antenna
  • mmWave
  • node tracking
  • rectennas
  • wireless power transfer
  • wireless power transfer (WPT)
  • Leaky-wave antenna (LWA)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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