Title :
Low power modulator for the application of capsule endoscope
Author :
De Xing, Lioe ; Shafie, Suhaidi ; Ramiah, Harikrishnan
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. Putra Malaysia, Serdang, Malaysia
Abstract :
This paper presents the radio frequency (RF) modulator for high data rate medical imaging for capsule endoscope. The RF modulator consists of a mixer and a ring oscillator. The ring oscillator provides carrier frequency of 433MHz and mix with the mixer to produce modulated signal. The modulator is designed using Silterra 0.13μm CMOS process. For supply voltage of 1.2 V, data rate of 3.5Mbps the mixer has current consumption of 594μA, IIP3 of 2dBm and at output power of -14.6 dBm. The ring oscillator consumes 740μA with phase noise of -81 dBc/Hz @ 160kHz offset.
Keywords :
CMOS integrated circuits; biomedical optical imaging; endoscopes; low-power electronics; mixers (circuits); radiofrequency oscillators; IIP3; Silterra 0.13μm CMOS process; capsule endoscope; current 594 muA; current 740 muA; frequency 433 MHz; high-data rate medical imaging; low-power modulator; mixer; radiofrequency modulator; ring oscillator; voltage 1.2 V; Biomedical imaging; Endoscopes; Microwave integrated circuits; Mixers; Modulation; Ring oscillators; Voltage-controlled oscillators; capsule endoscope; low power; mixer; modulator;
Conference_Titel :
Micro and Nanoelectronics (RSM), 2011 IEEE Regional Symposium on
Conference_Location :
Kota Kinabalu
Print_ISBN :
978-1-61284-844-0
DOI :
10.1109/RSM.2011.6088319
