A low-voltage low-power injection-locked oscillator for wearable health monitoring systems

Abstract

This paper reports a low-voltage low-power injection-locked oscillator suitable for short range wireless transmitter applications in a wireless body area network (WBAN). Low-power transmitter with high efficiency is a major design challenge for short range wireless communication. Unlike conventional transmitters used for cellular communication, injection-locked transmitter shows reduced power consumption and high transmitter efficiency. The core block of an injection-locked transmitter is an injection-locked oscillator. In this work a low-voltage low-power injectionlocked LC oscillator has been designed and fabricated employing self-cascode structure and body-terminal coupling. The proposed oscillator has been realized using 0.18-lm RF CMOS process. Experimental results indicate that the prototype oscillator can operate with a supply voltage as low as 0.9 V and consumes only 1.4 mW of power. The relatively low-voltage and low-power operation of the design makes it highly suitable for low-power transmitter applications.

An Oscillatory Neural Network Based Local Processing Unit for Pattern Recognition Applications

“…Technological innovations of sensors and integrated circuit technology have resulted in wireless sensing for various applications [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The massive scale of sensor data from an infrastructure creates a burden to the property owner to process and extract meaningful information.…”