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Abstract
This paper describes a high frequency and high precision full-wave rectifier using a fully differential input and output operational transconductance amplifier (FDIO-OTA), which is very suitable for CMOS technology implementation. The system comprises a voltage to current converter, precision full-wave rectifier and a current-to-voltage converter. An input voltage signal is converted into two symmetrical current signals by using a FDIO-OTA. Two current signals will be rectified by using MOS diodes and convert into output voltage by using grounded MOS resistor. The circuit exhibits a very precise rectifier and very high operating frequency. The simulation results demonstrate the performance of the proposed circuit.
Acknowledgments
The authors would like to thank the reviewers for their helpful comments and suggestions. This research is financial supported from the Thailand Research Fund through the Royal Golden Jubilee PhD Program (Grant No. PHD/0166/2546) to Montree Kumngern is also acknowledged.