High-Efficiency Microwave Rectifier With Extended Operating Bandwidth

被引：54

作者：

Lin, Yue Long ^{[1
]}

Zhang, Xiu Yin ^{[1
]}

Du, Zhi-Xia ^{[1
]}

Lin, Quan Wei ^{[1
]}

机构：

[1] South China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2018年 / 65卷 / 07期

关键词：

Microwave rectifier; wideband; impedance matching; high efficiency;

D O I：

10.1109/TCSII.2017.2716538

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 brief presents a microwave rectifier using a novel impedance matching technique to extend the operating bandwidth. Originated from the impedance control at two separated frequencies, the matching network is capable of manipulating the impedance over a wide frequency band by three steps. In this way, the operating bandwidth is extended. Theoretical analysis is carried out and closed-form design equations are derived. For validation, a wideband rectifier is implemented operating at 0.57-0.90 GHz at the input power of 12.8 dBm. It exhibits the fractional bandwidth of 44.9% for RF-dc conversion efficiency of higher than 70%. Moreover, the rectifier keeps more than 50% efficiency within 0.57-0.90 GHz at the input power from 3 dBm to 14.1 dBm.

引用

页码：819 / 823

页数：5

共 13 条

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