Triple-Band Transmitter with a Shared Dual-Band Antenna and Adaptive Matching for an Intraoral Tongue Drive System

Fanpeng Kong, Muhammad Zada, Hyoungsuk Yoo, Maysam Ghovanloo

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

5 Scopus citations

Abstract

This paper presents a wireless link between an intraoral Tongue Drive System (iTDS) and a nearby receiver. The iTDS is a wireless and wearable assistive technology (AT) detects tongue gestures and allows individuals with severe physical disabilities to issue a set of user-defined tongue commands to access computers, smart-phone, and navigate powered wheelchairs. To mitigate the effects of external RF interference, the Tx can switch between three transmission bands (27 MHz, 433MHz, and 915 MHz), while sharing a dual-band antenna for the upper two bands and a coil for the lower band and battery charging to reduce size. Additionally, two adaptive matching networks are incorporated with the Tx at 433 MHz and 915 MHz, respectively, to maintain robustness of wireless link in the dynamic mouth environment. The adaptive matching mechanism utilizes a feedback for auto-tuning of the antennas' matchings. The adaptive triple-band Tx chip is implemented in a 5 V 0.35-pm standard CMOS process and a combination of simulation and measurement results have been presented.

Original languageEnglish
Title of host publication2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538648810
DOIs
StatePublished - 2018 Apr 26
Event2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Florence, Italy
Duration: 2018 May 272018 May 30

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
Volume2018-May
ISSN (Print)0271-4310

Other

Other2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018
Country/TerritoryItaly
CityFlorence
Period18/05/2718/05/30

Keywords

  • adaptive matching
  • assistive technologies
  • dual band antenna
  • intraoral Tongue Drive System (iTDS)
  • transmitter

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