Open AccessA BROADBAND HIGH-EFFICIENCY RECTIFIER BASED ON TWO-LEVEL IMPEDANCE MATCH NETWORK
Author(s) -
Lingfeng Li,
XueXia Yang,
E. Liu
Publication year - 2018
Publication title -
progress in electromagnetics research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.245
H-Index - 33
ISSN - 1937-6480
DOI - 10.2528/pierl17103002
Subject(s) - broadband , rectifier (neural networks) , electrical impedance , electronic engineering , computer science , electrical engineering , telecommunications , engineering , artificial intelligence , artificial neural network , stochastic neural network , recurrent neural network
A broadband high-efficiency rectifier with shunt-diode circuit topological structure is presented in this paper. By utilizing the two-level impedance match network, the rectifier can achieve a high microwave-direct current (mw-dc) conversion efficiency within a broad range of operation bandwidth. A stepped microstrip line and a cross-shaped microstrip stub as two-level match network is designed to extend the operation bandwidth. A cross-shaped stub connected to the capacitances act as a dc-pass filter to block the fundamental frequency wave and the high order harmonics and further improve mw-dc efficiency within a broad bandwidth. Experimental results show that the peak conversion efficiency is 80.3% at the frequency of 1.9 GHz when the input power is 22 dBm. When the input power is 19.5 dBm, the bandwidth of efficiency higher than 70% is 40% (1.80 GHz–2.72 GHz). This rectifier has the characteristics of low profile and easy integration, which is suitable for RFIDs, WSNs, and other applications.
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