A low-power, high data-rate CMOS ASK transmitter for wireless capsule endoscopy

  • Shengxi Diao*
  • , Yuan Gao
  • , Weida Toh
  • , Cabuk Alper
  • , Yuanjin Zheng
  • , Minkyu Je
  • , Chun Huat Heng
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

This paper presents a low-power, high data-rate amplitude shift keying (ASK) radio frequency transmitter for wireless capsule endoscopy. This transmitter consists of a complementary LC voltage-controlled oscillator to generate the 900 MHz carrier frequency and a switchable driver amplifier (DA) controlled by the digital baseband signal to implement the direct ASK modulation. The modulated signal is amplified by the DA and radiated out by a miniaturized coil antenna. The proposed transmitter is implemented in a commercial 0.18-m CMOS process with 0.32 mm2 active area. Measurement results show that the peak output power is 1 dBm in the 902-928 MHz ISM band and the average DC power consumption is 7.2 mW at a data rate of 15 Mbps.

Original languageEnglish
Title of host publication2011 Defense Science Research Conference and Expo, DSR 2011
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 Defense Science Research Conference and Expo, DSR 2011 - Singapore, Singapore
Duration: 3 Aug 20115 Aug 2011

Publication series

Name2011 Defense Science Research Conference and Expo, DSR 2011

Conference

Conference2011 Defense Science Research Conference and Expo, DSR 2011
Country/TerritorySingapore
CitySingapore
Period3/08/115/08/11

Keywords

  • 900MHz ISM band
  • ASK
  • High Data Rate
  • Low Power
  • Transmitter
  • Wireless Capsule Endoscopy
  • Wireless Medical Imaging

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