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A Triple-Band CP Rectenna for Ambient RF Energy Harvesting
Guiping JIN Guangde ZENG Long LI Wei WANG Yuehui CUI
IEICE TRANSACTIONS on Communications
Publication Date: 2020/07/01
Online ISSN: 1745-1345
Type of Manuscript: PAPER
Category: Antennas and Propagation
RF energy harvesting, receiving antenna, rectifying circuit, low power density,
Full Text: PDF(3.7MB)>>
A triple-band CP rectenna for ambient RF energy harvesting is presented in this paper. A simple broadband CP slot antenna has been proposed with the bandwidth of 51.1% operating from 1.53 to 2.58GHz, which can cover GSM-1800, UMTS-2100 and 2.45GHz WLAN bands. Accordingly, a triple-band rectifying circuit is designed to convert RF energy in the above bands, with the maximum RF-DC conversion efficiency of 42.5% at a relatively low input power of -5dBm. Additionally, the rectenna achieves the maximum conversion efficiency of 12.7% in the laboratory measurements. The measured results show a good performance in the laboratory measurements.