A tuned rectifier for RF energy harvesting from ambient radiations

被引：26

作者：

Singh, Gaurav ^{[1
]}

Ponnaganti, Rahul ^{[1
]}

Prabhakar, T. V. ^{[1
]}

Vinoy, K. J. ^{[2
]}

机构：

[1] Indian Inst Sci, Dept Elect Syst Engn, Bangalore 560012, Karnataka, India

[2] Indian Inst Sci, Bangalore 560012, Karnataka, India

来源：

AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2013年 / 67卷 / 07期

关键词：

Cell-tower radiations; RF energy harvesting; Tuned rectifier; Supercapacitor; RECTENNA;

D O I：

10.1016/j.aeue.2012.12.004

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：

A circuit topology based on accumulate-and-use philosophy has been developed to harvest RF energy from ambient radiations such as those from cellular towers. Main functional units of this system are antenna, tuned rectifier, supercapacitor, a gated boost converter and the necessary power management circuits. Various RF aspects of the design philosophy for maximizing the conversion efficiency at an input power level of 15 mu W are presented here. The system is characterized in an anechoic chamber and it has been established that this topology can harvest RF power densities as low as 180 mu W/m(2) and can adaptively operate the load depending on the incident radiation levels. The output of this system can be easily configured at a desired voltage in the range 2.2-4.5 V. A practical CMOS load - a low power wireless radio module has been demonstrated to operate intermittently by this approach. This topology can be easily modified for driving other practical loads, from harvested RF energy at different frequencies and power levels. (c) 2012 Elsevier GmbH. All rights reserved.

引用

页码：564 / 569

页数：6

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