Title :
Low Power SAW-Based Oscillator for an Implantable Multisensor Microsystem
Author :
Tanguay, Louis-Francois ; Sawan, Mohamad
Author_Institution :
Dept. of Electr. Eng., Ecole Polytechnique de Montreal, Que.
Abstract :
The architecture of a low-power implantable multisensor microsystem dedicated to in vivo monitoring of biological parameters is presented. Low-power RF circuit techniques based on the gm/I d methodology, used to design the communication module of this biotelemetry microsystem, are discussed. A derivation of the optimal operating point of a surface-acoustic wave (SAW) oscillator is presented based on the resonator´s frequency response. The low-power oscillator, implemented in a 90-nm CMOS process, is presented to illustrate the design techniques used. The oscillator draws 320 muA from a 1-V supply and the amplitude of oscillations is 200 mV
Keywords :
biosensors; low-power electronics; surface acoustic wave oscillators; 1 V; 320 muA; 90 nm; implantable biotelemetry microsystem; implantable multisensor microsystem; low power SAW-based oscillator; low-power RF circuit techniques; sensor networks; surface-acoustic wave oscillator; Biomedical telemetry; Circuits; Condition monitoring; Design methodology; Frequency response; In vivo; Oscillators; Radio frequency; Surface acoustic waves; Surface waves; Implantable biotelemetry microsystem; RF CMOS; SAW oscillators; low-power RF; sensor networks;
Conference_Titel :
Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0387-1
DOI :
10.1109/APCCAS.2006.342516
