152.6% Fractional Bandwidth UHF-to-Microwave Band Compact Rectifier Utilizing the Conditions for Flat Frequency Characteristics of RF-DC Conversion Efficiency
IEEE Microwave and Wireless Components Letters（2022）
Abstract
In this letter, a wideband and compact microwave rectifier using the conditions for flat frequency characteristics of RF-dc conversion efficiency is proposed. A lumped element design was used to minimize the size of the rectifier. The multistage matching method was effective in reducing the Q value of the circuit, resulting in the wideband characteristic. Three capacitors and four inductors were used for matching. In a measurement result, RF-dc conversion efficiency exceeded 50% in the frequency range from 0.39 to 2.90 GHz, which corresponds with a fractional bandwidth of 152.6%.
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Key words
Microwave circuits,Wideband,Microwave communication,Frequency conversion,Wireless communication,Radio frequency,Wireless sensor networks,Microwave measurement,microwave power transmission,microwave rectifier,wideband circuit
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