Abstract
In this research work, a reconfigurable 2.45-GHz RF-DC converter realized in a 180-nm complementary metal-oxide semiconductor (CMOS) technology is proposed to efficiently harvest electromagnetic energy. The proposed circuit is composed of a low-power path rectifier, a high-power path rectifier, and an adaptive path control (APC) circuit. The APC circuit is made-up of a comparator, two switches, and an inverter. The APC circuit senses the output voltages of the low-power path and the high-power path rectifiers and generates a control signal to automatically switch the proposed circuit between the lower-power path and the high-power path operation depending upon RF input power level. The proposed circuit obtains more than 20% measured power conversion efficiency (PCE) from −6 dBm to 11 dBm input power range with maximum efficiencies of 41% and 45% at 1 and 6 dBm input powers, respectively, for 5 kΩ load resistance. In addition, the proposed circuit shows excellent performance at 900 MHz and 5.8 GHz frequencies.
Subject
Electrical and Electronic Engineering,Computer Networks and Communications,Hardware and Architecture,Signal Processing,Control and Systems Engineering
Cited by
8 articles.
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1. 2.45GHz Low-Power Diode Bridge Rectifier Design;2023 International Conference on Microelectronics (ICM);2023-12-17
2. Design of Synchronous RF-DC Rectifier for Energy Harvesting System;International Journal of Electronics;2023-01-03
3. Low power CMOS bridge Rectenna;2022 IEEE Conference on Antenna Measurements and Applications (CAMA);2022-12-14
4. Estimation of Harvested RF Energy Based on Survey of Ambient RF Power for Optimized Rectifier Design;Wireless Communications and Mobile Computing;2022-11-30
5. Review on Power Conversion Efficiency Improvement Strategies in RF Energy Harvesting;2022 IEEE Wireless Antenna and Microwave Symposium (WAMS);2022-06-05