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A C-band microwave rectifier without capacitors for microwave power transmission

Published online by Cambridge University Press:  14 July 2014

Biao Zhang ,
Wan Jiang ,
Chengyang Yu  and
Changjun Liu
Biao Zhang
Affiliation:
School of Electronics and Information Engineering, Sichuan University, Chengdu, China. Phone: +86 28 8546 3882
Wan Jiang
Affiliation:
School of Electronics and Information Engineering, Sichuan University, Chengdu, China. Phone: +86 28 8546 3882
Chengyang Yu
Affiliation:
School of Electronics and Information Engineering, Sichuan University, Chengdu, China. Phone: +86 28 8546 3882
Changjun Liu*
Affiliation:
School of Electronics and Information Engineering, Sichuan University, Chengdu, China. Phone: +86 28 8546 3882
*
Corresponding author: C. Liu Email: cjliu@ieee.org
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Abstract

A microwave rectifier at 5.8 GHz without any capacitors is presented, which owns a measured MW-to-DC conversion efficiency of 68.1%. A harmonic rejection filter and a DC pass filter, which replace lumped capacitors in conventional microwave rectifiers, are applied to suppressing the harmonics produced by an HSMS-286 Schottky diode during rectifying. At the fundamental frequency, a microstrip impedance transformer which contains a shunt λg/8 short-ended microstrip transmission line and two short series microstrip transmission lines are applied to compensating the imaginary impedance of the diode and matching the input impedance of the rectifier. The measured MW-to-DC conversion efficiency agrees well to the simulated results. The novel rectifier without any lumped passive elements may be applied for power transmission system at higher microwave frequencies.

Keywords

Microwave rectifierLow-pass filterImpedance matching
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 7 , Issue 6 , December 2015 , pp. 623 - 628
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2014 

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