Making a telemetry system implantable: challenges and opportunities in antenna design

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

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

4 Citations (Scopus)

Abstract

Design of a proximity coupled implantable planar inverted F-antenna (I-PIFA) is presented. It's to be operated in the Australian 900MHz ISM band (915-928MHz). This antenna, integrated to an existing Radio Frequency Identification (RFID) tag, will be implanted under the skin of rats for medical research. The main purpose of this wireless telemetry system is to transmit the extracted physiological signals and indicators from the body of the rat to an external RFID reader connected to a computer. The total volume of the antenna is 9.25mm×8mm×3.2mm and the larger ground plane of the RFID circuit board is utilized to improve the performance of the antenna. A skin-fat-muscle planar tissue model has been developed to represent the immediate environment around the antenna, which has been coated with a bio-compatible material. The simulations have shown that the effect of rat skin and the bio-compatible coating on antenna matching is significant. Yet with the conservative antenna design proposed here that has a nominal 10dB return loss bandwidth of 15%, the antenna remain matched over the entire ISM band even if the dielectric constants of the rat skin and bio-compatible coating change over a wide range.

Original languageEnglish
Title of host publication2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-BIO 2013 - Proceedings
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-3
Number of pages3
ISBN (Electronic)9781467360968
ISBN (Print)9781467360944
DOIs
Publication statusPublished - 2013
Event2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Tecbhnologies for Biomedical and Healthcare Applications, IMWS-BIO 2013 - Singapore, Singapore
Duration: 9 Dec 201311 Dec 2013

Other

Other2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Tecbhnologies for Biomedical and Healthcare Applications, IMWS-BIO 2013
CountrySingapore
CitySingapore
Period9/12/1311/12/13

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