Design Considerations of Antennas and Adaptive Impedance Matching Networks for RF Energy Harvesting

被引：5

作者：

Lauder, David ^{[1
]}

Sun, Yichuang ^{[1
]}

机构：

[1] Univ Hertfordshire, Sch Engn & Comp Sci, Hatfield AL10 9AB, Herts, England

来源：

24TH IEEE EUROPEAN CONFERENCE ON CIRCUIT THEORY AND DESIGN (ECCTD 2020) | 2020年

关键词：

Ambient Radio Frequency (RF) Energy Harvesting (RF-EH); Internet of Things; antenna; adaptive impedance matching network; RF to DC converter; Power Conversion Efficiency; voltage multiplier; CO-DESIGN; RECTIFIER;

D O I：

10.1109/ecctd49232.2020.9218310

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 paper reviews recent developments in design of antennas and impedance matching networks for RF Energy Harvesting (RF-EH) at UHF. The antenna design is considered in conjunction with the requirements that it places on the impedance matching network (IMN), in order to match the load which is an RF to DC converter. It is shown that there may be advantages in using an interface impedance between the antenna and the IMN that differs from the conventional 50 Omega impedance. Various options are considered for the design of an IMN driving a rectifier load. A novel adaptive IMN architecture is proposed that can match two different load impedances, depending on the received power level. This can optimize Power Conversion Efficiency (PCE) over a range of different input powers that may be encountered in RF EH.

引用

页数：4

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