RF Rectifiers With Wide Incident Angle of Incoming Waves Based on Rat-Race Couplers

被引：11

作者：

Liu, Jian ^{[1
]}

Huang, Mo ^{[1
]}

Lu, Yan ^{[1
]}

Martins, Rui P. ^{[1
]}

机构：

[1] Univ Macau, Fac Sci & Technol FST, State Key Lab Analog & Mixed Signal VLSI, Dept Elect & Comp Engn ECE,Inst Microelect, Macau, Peoples R China

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2022年 / 70卷 / 03期

关键词：

Radio frequency; Manganese; Impedance; Antennas; Topology; Impedance matching; Couplers; Energy harvesting; radio frequency (RF); rat-race coupler (RRC); rectifier; wide incident angle; DUAL-BAND RECTENNA; POWER; ARRAY; DESIGN;

D O I：

10.1109/TMTT.2021.3132331

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 radio frequency (RF) rectifier with a wide incident angle of incoming waves, based on a rat-race coupler (RRC). Two identical sub-rectifiers replace the two load circuits of the conventional RRC. When compared with the previous Wilkinson power combiner (WPC)-based rectifier, the proposed topology advances with a smaller variation in power conversion efficiency (PCE) over the incident angle. In addition, it simplifies the matching network (MN) design and enables a lower input return loss due to the fully symmetric circuitry between 0 degrees and 180 degrees. Furthermore, it allows a higher design flexibility on the rectifier topology. For validation, we designed and fabricated two wide-angle rectifiers, one working at single band (2.45 GHz) and the other at dual band (0.9 and 2.4 GHz). The single-band rectifier achieved a 67.3% peak PCE and 7.9% efficiency variation within the 0 degrees-360 degrees incident angle range. For the dual-band rectifier, the peak PCE is 78.4% and 70.2%, while the variation is 4% and 8.8%, for 0.9 and 2.4 GHz, respectively. The PCE variation is the smallest among previous works.

引用

页码：1983 / 1993

页数：11