Title :
A UHF micro-power CMOS rectifier using a novel diode connected CMOS transistor for micro-sensor and RFID applications
Author :
Shokrani, M.R. ; Hamidon, Mohd Nizar ; Khoddam, M. ; Najafi, V.
Author_Institution :
Electr. Eng. Dept., Univ. Putra Malaysia, Kuala Lumpur, Malaysia
Abstract :
The design strategy and efficiency optimization of UHF micro-power rectifiers using a novel diode connected MOS transistor is presented. The proposed diode connected MOS transistor uses a new bulk connection which leads to reduce the threshold voltage and leakage current in compare to conventional diode connected transistors. Using the proposed diode in typical rectifiers makes a significant improvement in output voltage and current therefore the efficiency is increased comparing to the same rectifier architectures using conventional diodes. Also a design procedure for efficiency optimization is presented and a superposition method is used to optimize the performance of multiple output rectifiers. Finally a five stage double output rectifier is designed based on the proposed optimization method. Simulation results verified the improvement in efficiency and area. All circuits are designed in a standard 0.18um CMOS Technology.
Keywords :
CMOS integrated circuits; UHF integrated circuits; circuit optimisation; integrated circuit design; leakage currents; microsensors; radiofrequency identification; rectifiers; transistor circuits; CMOS technology; RFID application; UHF micropower CMOS rectifier; bulk connection; circuit design; design strategy; diode connected CMOS transistor; efficiency optimization; five stage double output rectifier; leakage current; microsensor; multiple output rectifiers; output voltage; rectifier architecture; size 0.18 mum; superposition method; threshold voltage; CMOS Rectifier; Diode Connected CMOS Transistor; Efficiency; RF Energy Harvesting; Super Position;
Conference_Titel :
Electronics Design, Systems and Applications (ICEDSA), 2012 IEEE International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4673-2162-4
DOI :
10.1109/ICEDSA.2012.6507805
