A Rectifying Antenna (Rectenna) is one of the most important components for a wireless power transmission. It has been developed for many applications such as Space Solar Power System (SSPS), and Radio Frequency Identification (RFID) etc. The Rectenna consisting of RF-DC conversion circuits and receiving antennas needs to be designed for high conversion efficiency to achieve efficient power transmission. we try to design the mw-Class RF-DC conversion circuit using halfand full-wave rectification.The measured conversion efficiencies is 59.3 % and 65.3 % athalf-and full-wave type, respectively.And the full-wave type has lower 2nd harmonic reflection coefficient.
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