Wireless Biomedical Telemetry Systems Based on Flexible Metamaterial Circuits and Advanced Rf Architectures

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Material Information

Title:
Wireless Biomedical Telemetry Systems Based on Flexible Metamaterial Circuits and Advanced Rf Architectures
Physical Description:
1 online resource (165 p.)
Language:
english
Creator:
Cheng, Xiaoyu
Publisher:
University of Florida
Place of Publication:
Gainesville, Fla.
Publication Date:

Thesis/Dissertation Information

Degree:
Doctorate ( Ph.D.)
Degree Grantor:
University of Florida
Degree Disciplines:
Electrical and Computer Engineering
Committee Chair:
YOON,YONG KYU
Committee Co-Chair:
EISENSTADT,WILLIAM R
Committee Members:
LIN,JENSHAN
WONG,FONG
KIM,GLORIA JUNG A

Subjects

Subjects / Keywords:
amplifiers -- antennas -- biomedical -- bluetooth -- bruxism -- endoscope -- metamaterial -- mhealth -- patch
Electrical and Computer Engineering -- Dissertations, Academic -- UF
Genre:
Electrical and Computer Engineering thesis, Ph.D.
bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract:
Exploration of several novel wireless components and their applications in different bio-medical telemetry systems are presented.Individual RF components including low noise amplifier and several different types of flexible antennas based on liquid crystalline polymer (LCP) are proposed,designed, fabricated and characterized. All those components are then employed in two platforms including a novel wireless capsule endoscope and a wireless mouth guard. Due to the parasitics of the IC packaging,amplifiers always show gain roll off. The amplifier gain is higher at low frequency, but is lower at high frequency. A frequency equalizer is used to compensate the gain roll off. With the area of 6mm×8mm, a gain flatness of ±1.1dB is demonstrated from 100 MHz to 7 GHz with a nominal gain of 33.5dB. Antennas for implants including capsule endoscope applications are difficult to implement due to the dispersive and lossy nature of human body. With the assistance of the human body model from Ansys Inc., a family of new wrappable antennas based on flexible substrates are designed,fabricated and characterized. Those wrappable antennas are based on patches,and are wrapped into a cylindrical capsule shape. The antenna size is minimized by using inductive slot metamaterial particles and electrical vias loading.Those antennas show a good omni-directional pattern while offering electromagnetic interference (EMI) shielding and physical protection to the capsule endoscope systems. Bruxism involves the activity of grinding and clenching teeth for non-function purposes. While traditional wired systems constraint patients from moving freely, a new wireless mouth guard is developed based on a capacitance to digital signal converter. However, this system suffers from common mode noise generated by oral tissue moving. A time constant method with quasi-differential input is used on a new mouth guard system and common mode noise is suppressed using algorithms in the microprocessor. Metamaterials are a family of artificial structures which demonstrate behaviors that are not readily available in the nature. They are good candidates for sensing due to their tunability. Based on this feature, a battery free and wireless mouth guard for Bruxism is also developed and demonstrated.
General Note:
In the series University of Florida Digital Collections.
General Note:
Includes vita.
Bibliography:
Includes bibliographical references.
Source of Description:
Description based on online resource; title from PDF title page.
Source of Description:
This bibliographic record is available under the Creative Commons CC0 public domain dedication. The University of Florida Libraries, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Statement of Responsibility:
by Xiaoyu Cheng.
Thesis:
Thesis (Ph.D.)--University of Florida, 2013.
Local:
Adviser: YOON,YONG KYU.
Local:
Co-adviser: EISENSTADT,WILLIAM R.
Electronic Access:
RESTRICTED TO UF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE UNTIL 2014-12-31

Record Information

Source Institution:
UFRGP
Rights Management:
Applicable rights reserved.
Classification:
lcc - LD1780 2013
System ID:
UFE0045407:00001