An RF energy harvester system using UHF micropower CMOS rectifier based on a diode connected CMOS transistor.
This paper presents a new type diode connected MOS transistor to improve CMOS conventional rectifier's performance in RF energy harvester systems for wireless sensor networks in which the circuits are designed in 0.18  μm TSMC CMOS technology. The proposed diode connected MOS transistor uses a new bulk connection which leads to reduction in the threshold voltage and leakage current; therefore, it contributes to increment of the rectifier's output voltage, output current, and efficiency when it is well important in the conventional CMOS rectifiers. The design technique for the rectifiers is explained and a matching network has been proposed to increase the sensitivity of the proposed rectifier. Five-stage rectifier with a matching network is proposed based on the optimization. The simulation results shows 18.2% improvement in the efficiency of the rectifier circuit and increase in sensitivity of RF energy harvester circuit. All circuits are designed in 0.18 μm TSMC CMOS technology.
Department of Electrical & Electronics Engineering, Faculty of Engineering, University Putra Malaysia (UPM), 43400 Serdang, Selangor Darul Ehsan, Malaysia.
Mohammad Reza
MR
Shokrani
Department of Electrical & Electronics Engineering, Faculty of Engineering, University Putra Malaysia (UPM), 43400 Serdang, Selangor Darul Ehsan, Malaysia.
Mojtaba
0000-0002-2209-6539
M
Khoddam
Department of Electrical & Electronics Engineering, Faculty of Engineering, University Putra Malaysia (UPM), 43400 Serdang, Selangor Darul Ehsan, Malaysia.
Mohd Nizar B
MN
Hamidon
Department of Electrical & Electronics Engineering, Faculty of Engineering, University Putra Malaysia (UPM), 43400 Serdang, Selangor Darul Ehsan, Malaysia.
Noor Ain
0000-0002-4091-9543
NA
Kamsani
Department of Electrical & Electronics Engineering, Faculty of Engineering, University Putra Malaysia (UPM), 43400 Serdang, Selangor Darul Ehsan, Malaysia.
Fakhrul Zaman
FZ
Rokhani
Department of Electrical & Electronics Engineering, Faculty of Engineering, University Putra Malaysia (UPM), 43400 Serdang, Selangor Darul Ehsan, Malaysia.
Suhaidi Bin
SB
Shafie
D000465:Algorithms; D003198:Computer Simulation; D025802:Electric Capacitance; D004553:Electric Conductivity; D011211:Electric Power Supplies; D004581:Electronics / Q000379:methods; D015203:Reproducibility of Results; D014173:Transistors, Electronic