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The Journal of The Korea Institute of Intelligent Transport Systems Vol.8 No.6 pp.64-72
고조파 억압 이중모드 대역통과 여파기를 이용한 2.45 GHz 고효율 렉테나 설계
High Efficiency Rectenna for Wireless Power Transmission Using Harmonic Suppressed Dual-mode Band-pass Filter
Abstract
In this paper, a high efficiency 2.45 GHz rectenna with a microstrip patch antenna and a dual-mode band-pass filter in which the 2nd and 3rd harmonics are suppressed, is presented. From the experimental results, the 2.45GHz rectenna using 3rd harmonic suppressed dual-mode BPF shows the conversion efficiency of 41.6% with incident power density of 0.3 mW/cm2 and the received power of 1.66 mW. This result shows high conversion efficiency because the received power of this rectenna is lower than other rectennas to be compared with. This rectenna can be applied to the WPT (Wireless Power Transmission) field for energy harvesting. Also, it is expected to be used to provide the stand-by power for the low power devices for USN, and wireless power transfer in sensor application of MEMS devices.
