Abstract
A new type of wireless power transfer system is presented with wideband mmWave transmitters and rectennas. The proposed system transmits a beam formable and beam steerable signal by exploiting the inherent frequency-dispersive nature of a passive leaky wave antenna, thereby eliminating the need for active phased array and other costly control methods. Multiple nodes can be wirelessly powered simultaneously by using a wideband mmWave rectenna to harvest the frequency scanning signals. A 24-34 GHz rectenna was designed in a highly integrated fashion and has been tested to show its high conversion efficiency of >50% at the frequency and power levels of interest. We have presented a system demonstration for remotely charging diverse nodes at > 1 m distance by using the proposed system with feedback control for the multi-tone frequency modulation and sweeping of the transmitting signals. Our work has showcased the passive beamforming and multi-node tracking of mmWave WPT system using significantly reduced cost and complexity.
| Original language | English |
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| Title of host publication | 17th European Conference on Antennas and Propagation (EuCAP 2023) |
| Publisher | IEEE |
| ISBN (Print) | 9781665475419 |
| DOIs | |
| Publication status | Published - 31 May 2023 |
| Event | 17th IEEE European Conference on Antennas and Propagation 2023 - Florence, Italy Duration: 26 Mar 2023 → 31 Mar 2023 |
Conference
| Conference | 17th IEEE European Conference on Antennas and Propagation 2023 |
|---|---|
| Abbreviated title | EuCAP 2023 |
| Country/Territory | Italy |
| City | Florence |
| Period | 26/03/23 → 31/03/23 |
Keywords
- leaky wave antennas
- mmWave
- rectennas
- wireless power transfer
ASJC Scopus subject areas
- Computer Networks and Communications
- Hardware and Architecture
- Instrumentation