Efficient circuit design for low power energy harvesting

被引：7

作者：

Harerimana, F. ^{[1
]}

Peng, H. ^{[2
]}

Otobo, M. ^{[2
]}

Luo, F. ^{[2
]}

Gikunda, M. N. ^{[1
]}

Mangum, J. M. ^{[1
]}

LaBella, V. P. ^{[1
,3
,4
]}

Thibado, P. M. ^{[1
]}

机构：

[1] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA

[2] Univ Arkansas, Dept Elect Engn, Fayetteville, AR 72701 USA

[3] SUNY Albany, Coll Nanoscale Sci, Polytech Inst, Albany, NY 12203 USA

[4] SUNY Albany, Coll Engn, Polytech Inst, Albany, NY 12203 USA

来源：

AIP ADVANCES | 2020年 / 10卷 / 10期

关键词：

GENERATOR;

D O I：

10.1063/5.0021479

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We present five circuit topologies for low power energy harvesting. The most efficient circuit uses a variable capacitor as the power source, a DC bias voltage to charge the variable capacitor, two transistors for rectification, and two storage capacitors. Varying the capacitance performs work and results in stored charge in the capacitors. We experimentally measure the storage capacitor voltage and current over time. The circuit efficiency nears 50% at a maximum power of 10 nW. Multiple circuit topologies are simulated and yield efficiencies from 15% to 50%.

引用

页数：6

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