Retro-directive beamforming versus retro-reflective beamforming for wireless power transmission
Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45) › 32_Refereed conference paper (with ISBN/ISSN) › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
| Original language | English |
|---|---|
| Title of host publication | WPTC 2017 - Wireless Power Transfer Conference |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Print) | 9781509045853 |
| Publication status | Published - May 2017 |
Conference
| Title | 2017 Wireless Power Transfer Conference, WPTC 2017 |
|---|---|
| Place | Taiwan |
| City | Taipei |
| Period | 10 - 12 May 2017 |
Link(s)
Abstract
This paper studies the difference between retro-directive beamforming technique and retro-reflective beamforming technique in the context of wireless power
transmission applications. In all of our studies, a wireless power receiver broadcasts continuous-wave pilot signal, the wireless power transmitter receives and analyzes the pilot signal, and finally the wireless power transmitter transmits continuous-wave power with phase profile conjugate to that of the received pilot
signal. Our study demonstrates that, a linear equi-spaced array configuration employed by the wireless power transmitter behaves as a retro-directive beamformer when the wireless power receiver resides in the far-zone of the wireless power transmitter, whereas it behaves as a retro-reflective beamformer when the wireless power receiver is not in the far-zone. Our studies further
show that, far-zone gain could be reduced by adjusting the array’s geometrical configuration without affecting focusing in the near-zone. All the conclusions drawn in this paper are supported by numerical results as well as experimental results.
transmission applications. In all of our studies, a wireless power receiver broadcasts continuous-wave pilot signal, the wireless power transmitter receives and analyzes the pilot signal, and finally the wireless power transmitter transmits continuous-wave power with phase profile conjugate to that of the received pilot
signal. Our study demonstrates that, a linear equi-spaced array configuration employed by the wireless power transmitter behaves as a retro-directive beamformer when the wireless power receiver resides in the far-zone of the wireless power transmitter, whereas it behaves as a retro-reflective beamformer when the wireless power receiver is not in the far-zone. Our studies further
show that, far-zone gain could be reduced by adjusting the array’s geometrical configuration without affecting focusing in the near-zone. All the conclusions drawn in this paper are supported by numerical results as well as experimental results.
Research Area(s)
- Antenna array, Beamforming, Retro-directive, Retro-reflective, Wireless power transmission
Citation Format(s)
Retro-directive beamforming versus retro-reflective beamforming for wireless power transmission. / Wang, Xin; Ruan, Bodong; Wong, Hang et al.
WPTC 2017 - Wireless Power Transfer Conference. Institute of Electrical and Electronics Engineers Inc., 2017. 7953898.Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45) › 32_Refereed conference paper (with ISBN/ISSN) › peer-review
