Effects of rat skin on the resonance frequency: An experiment with a commercial antenna for an implanted telemetry system

Author

Islam, Shahidul M. ; Esselle, Karu P. ; Bull, David ; Pilowsky, Paul M.

Author_Institution

Dept. of Electron. Eng., Macquarie Univ., Sydney, NSW, Australia

fYear

2011

fDate

21-24 Nov. 2011

Firstpage

1391

Lastpage

1395

Abstract

An implantable wireless data transmission system, under development, requires the implanted antenna to be located under the skin of a rat. Here we investigate variations in the resonance frequency of a commercial antenna (ANT403 SP1, Antenna Factor ™) with and without covering by rat skin. Frequency shifting due to ageing effects of the rat skin is also measured in this experiment. It is found that 15%-20% decrease in the resonance frequency may occur when the antenna is covered by rat skin, which has an average thickness at around 2mm. However, only slight frequency variations were observed due to the ageing effect of rat skin. Fresh rat skin samples were collected and stored in salt solution before, and after, measurements. A comparative study of frequency shifting between micro-strip (MS) feed and co-planar waveguide (CPW) feed of the antenna is highlighted in this paper.

Keywords

antenna feeds; coplanar waveguides; data communication; microstrip antennas; telemetry; waveguide antennas; ANT403 SP1; antenna factor; co-planar waveguide feed; commercial antenna; implantable wireless data transmission system; implanted antenna; implanted telemetry system; microstrip feed; rat skin effects; resonance frequency; Antenna measurements; Feeds; Frequency measurement; Loss measurement; Resonant frequency; Skin; Implantable antenna; ageing; measurement; rat skin; telemetry;

fLanguage

English

Publisher

ieee

Conference_Titel

TENCON 2011 - 2011 IEEE Region 10 Conference

Conference_Location

Bali

ISSN

2159-3442

Print_ISBN

978-1-4577-0256-3

Type

conf

DOI

10.1109/TENCON.2011.6129037

Filename

6129037