Energy Harvesting Circuit on a Miniaturized One-sided Directional Antenna

2015 Fiscal Year Final Research Report

• Project/Area Number: 25420334
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: Kyushu University
• Principal Investigator: Kanaya Haruichi 九州大学, システム情報科学研究科(研究院, 准教授 (40271077)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: エネルギーハーベスト / 昇圧回路 / 単方向アンテナ / フレキシブルアンテナ

Outline of Final Research Achievements

In this project, RF-to-DC energy harvesting circuit was developed. The circuit was composed of a one-sided directional flexible antenna, an impedance matching circuit, a resonant circuit, and a booster circuit for converting and boosting radio frequency power into DC voltage. The booster circuit was based on traditional Cockcrof-Walton circuit. One-sided directional flexible antenna is composed of slot antenna, interdigital gap and coplanar wave guide. Power conversion efficiency at -10 dBm input @ 900 MHz is optimized by the load resistance. Simulated conversion efficiency is 58.7%. Because of the effect of the parasitic components in the circuit, measured efficiency was 44%. By implementing this circuit on CMOS, effect of the parasitic components will be reduced.

Free Research Field

電子回路