Beamforming Power Emitter Design with 2x2 Antenna Array and Phase Control for Microwave/RF-based Energy Harvesting

被引:0
|
作者
Yang, Sheng-Fan [1 ]
Huang, Tzuen-Hsi [1 ]
Chen, Chun-Cheng [1 ]
Lu, Chun-Yi [2 ]
Chung, Pei-Jung [2 ]
机构
[1] Natl Cheng Kung Univ, Dept Elect Engn, Tainan, Taiwan
[2] Delta Elect Inc, Delta Res Ctr, Taipei, Taiwan
关键词
Wireless power transfer (WPT); beamforming; antenna array; energy harvesting;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, a 915-MHz RF-power emitter with an antenna array controlled by phase shifters is proposed to make directional energy beam point to the energy harvesting (EH) receiver. For the beamforming request, a 2x2 patch antenna array and tunable 360 degrees reflection-type phase shifters are designed. Measurement results show the energy transmission efficiency can be improved by 3.9 times higher than that of single patch antenna at one meter away under the same input power level. Furthermore, by applying +/- 15 degrees beamforming control, transmission efficiency is increased by 2.7 times when receiving antenna placed at the angle of +24 degrees.
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页数:4
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