Near-Field Focusing mmWave Leaky Wave Antenna for Enhanced Wireless Power Transfer

Han, Shan and Poveda-García, Miguel and Song, Chaoyun and Ding, Yuan and Goussetis, George and Wang, Lei (2024) Near-Field Focusing mmWave Leaky Wave Antenna for Enhanced Wireless Power Transfer. In: 2023 IEEE 11th Asia-Pacific Conference on Antennas and Propagation, APCAP 2023 - Proceedings :. 2023 IEEE 11th Asia-Pacific Conference on Antennas and Propagation, APCAP 2023 - Proceedings . Institute of Electrical and Electronics Engineers Inc., CHN. ISBN 9798350326277

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Abstract

A near-field focusing millimeter-wave (mmWave) leaky wave antenna (LWA) using non-periodic rectangular slots for wireless power transfer application is presented in this paper. The proposed design is based on a rectangular substrate integrated waveguide and fed by two coaxial probes. The phase distribution in the near field and slot positioning are derived by a theoretical approach. By skillfully manipulating the slot positions, the uniform slot elements facilitate an in-phase superposition within the desired near-field region, resulting in a significant focusing effect. To explore the performance of the antenna, the focusing effect is examined at a 2D focal distance of (10λ, 10λ). Here, λ represents the free space wavelength at 28 GHz. While maintaining a beam steering from 27.5 GHz to 30.5 GHz, an impressive 69% enhancement compared to the traditional far-field LWAs is obtained at 28 GHz. This breakthrough design not only offers a substantial enhancement in focusing capability but also opens the door to an emerging transmitting system with a notably high beam efficiency for wireless power transfer (WPT).

Item Type:
Contribution in Book/Report/Proceedings
Additional Information:
Publisher Copyright: © 2023 IEEE.
Uncontrolled Keywords:
Research Output Funding/no_not_funded
Subjects:
?? no - not fundedcomputer networks and communicationselectrical and electronic engineeringelectronic, optical and magnetic materialssurfaces, coatings and filmscontrol and optimizationinstrumentation ??
ID Code:
221324
Deposited By:
Deposited On:
13 Jun 2024 12:10
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Jul 2024 05:29