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

fYear

2011

fDate

28-30 Sept. 2011

Firstpage

182

Lastpage

185

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro and Nanoelectronics (RSM), 2011 IEEE Regional Symposium on

Conference_Location

Kota Kinabalu

Print_ISBN

978-1-61284-844-0

Type

conf

DOI

10.1109/RSM.2011.6088319

Filename

6088319