DESIGN OF A BROADBAND CIRCULARLY POLARIZED RECTENNA FOR MICROWAVE POWER TRANSMISSION

被引：8
作者：
Lee, Chien-Hsing [1 ]
Chang, Yu-Han [1 ]
机构：
[1] Natl Cheng Kung Univ, Dept Syst & Naval Mechatron Engn, Tainan 701, Taiwan
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2015年 / 57卷 / 03期
关键词：
broadband circularly polarized antenna; phase shifter; rectenna; RECTIFYING ANTENNA; IMPLEMENTATION;
D O I：
10.1002/mop.28931
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This article presents a broadband circularly polarized (CP) rectifying antenna (rectenna) for microwave power transmission at 4.2-7.6 GHz, comprising a broadband CP antenna, and a rectifier circuit. The antenna consists of a standard Schiffman phase shifter and a pair of orthogonally positioned linearly polarized slot antennas with equal radiation strength. The rectifier circuit is composed of a microwave Si Schottky detector diode (HSMS-2862), a low-pass filter, a load resistor, and a ripple capacitor. Output dc voltage of 1.98 V over a 680 Omega load resistance and the maximum microwave-to-dc conversion efficiency of 81.6 % were measured when 34 dBm microwave power was transmitted at 5.6 GHz over a distance of 50 cm. (C) 2015 Wiley Periodicals, Inc.
引用
收藏
页码：702 / 706
页数：6
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