Title :
Front end of low power transmitter for wireless capsule endoscope
Author :
Lioe De Xing ; Shafie, Suhaidi ; Ramiah, H. ; Sulaiman, Nasri
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. Putra Malaysia, Serdang, Malaysia
Abstract :
A low power transmitter front end for the application of a capsule endoscope operating at ISM band of 434 MHz has been proposed. The proposed architecture is aim to achieve low power consumption which is the essential parameter in a capsule endoscope. The transmitter front end is implemented using Silterra 0.13 um CMOS technology and consists of an up-conversion mixer and a voltage controlled oscillator. The current consumption of the system is 1.57 mA with the supply voltage of 1.2 V. Output power is found to be -14.4 dBm and the phase noise of the ring oscillator is -81.76 dBc/Hz at offset frequency of 160 kHz.
Keywords :
CMOS integrated circuits; biomedical electronics; endoscopes; oscillators; phase noise; radio transmitters; telemedicine; CMOS technology; ISM band; Silterra; current consumption; frequency 160 kHz; frequency 434 MHz; low power transmitter front end; output power; phase noise; ring oscillator; size 0.13 mum; up-conversion mixer; voltage 1.2 V; voltage controlled oscillator; wireless capsule endoscope; Biomedical imaging; Endoscopes; Mixers; Power demand; Ring oscillators; Transmitters; Wireless communication; low power; mixer; ring oscillator; transmitter;
Conference_Titel :
Circuits and Systems (ICCAS), 2012 IEEE International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4673-3117-3
Electronic_ISBN :
978-1-4673-3118-0
DOI :
10.1109/ICCircuitsAndSystems.2012.6408285
