Abstract
In this letter, a novel microwave rectifier based on a power recycling network (PRN) is proposed, which features less sensitivity to input power variation. The PRN is connected to the microwave input of two parallel subrectifiers, realizing better matching over a wide power range. For validation, a 2.45-GHz rectifier incorporating the PRN is designed and implemented. The measured results show that the RF-dc conversion efficiency maintains over 50% and 70% within the input power range 10.5–31.8 and 21.7–30.1 dBm, respectively. Compared with the counterpart without the PRN, the operating power range is extended without degrading the maximum efficiency.
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