A Novel Rectenna Design with DGS Filters for Low-Power Energy Transfer

Abstract:

A high efficiency rectifying antenna (rectenna) is designed at 5.8 GHz by using defected ground structure (DGS) filters for low-power energy transfer. A slot-coupled patch antenna is used as a receiving antenna with a high gain of 8.2dB. A DGS low-pass filter at the input port of the rectifying circuit is used to suppress the high order harmonics by 20dB. A DGS dc-pass filter is designed to block the AC signal from transmitting to the load. Both of the antenna and the filters are simulated by the full wave EM analysis software of HFSS. The RF-DC conversion efficiency of 51.8% is obtained when the received power is as low as 3mW.

• Periodical: Applied Mechanics and Materials (Volumes 668-669)
• Pages: 787-790
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.668-669.787
• Online since: October 2014
• Authors: Shuang Bing Liu
• Keywords: Conversion Efficiency, DGS Filter, Low-Power, Rectenna

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