Title :
A 7.2mW 15Mbps ASK CMOS transmitter for ingestible capsule endoscopy
Author :
Diao, Shengxi ; Zheng, Yuanjin ; Gao, Yuan ; Heng, Chun-Huat ; Je, Minkyu
Author_Institution :
Inst. of Microelectron., A*STAR (Agency for Sci. Technol. & Res.), Singapore, Singapore
Abstract :
This paper presents an amplitude shift keying (ASK) transmitter for high-quality imaging in ingestible capsule endoscopy application. A carrier frequency of 900MHz is generated by a complementary LC voltage-controlled oscillator, and directly modulated with a digital baseband ASK signal by switching on and off a driver amplifier (DA). The modulated signal is amplified by the DA and transmitted through an inductive coupling. The transmitter has been fabricated in 0.18μm CMOS process. A peak output power of 1dBm can be transmitted and power consumption is 7.2mW at a data rate of 15Mbps.
Keywords :
CMOS integrated circuits; amplifiers; amplitude shift keying; biomedical electronics; biomedical equipment; biomedical optical imaging; body area networks; body sensor networks; data communication equipment; driver circuits; endoscopes; optical modulation; optical transmitters; ASK CMOS transmitter; CMOS process; amplitude shift keying transmitter; bit rate 15 Mbit/s; complementary LC voltage-controlled oscillator; data rate; digital baseband ASK signal; driver amplifier; frequency 900 MHz; high-quality imaging; ingestible capsule endoscopy; medical imaging devices; power 7.2 mW; power consumption; signal modulation; size 0.18 mum; wireless body area network; Amplitude shift keying; Biomedical imaging; Capacitors; Switches; Transmitters; Voltage-controlled oscillators; Wireless communication; 900MHz ISM band; ASK; High Data Rate; Ingestible Capsule Endoscopy; Low Power; Transmitter; Wireless Medical Imaging;
Conference_Titel :
Circuits and Systems (APCCAS), 2010 IEEE Asia Pacific Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-7454-7
DOI :
10.1109/APCCAS.2010.5775071
