Bandwidth enhancement of an implantable RFID tag antenna at 900 MHz ISM band for RF telemetry

Author

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

Author_Institution

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

fYear

2012

fDate

2-5 Oct. 2012

Firstpage

741

Lastpage

745

Abstract

In this paper, we present a compact PIFA antenna (11 mm×13 mm×5.6 mm) operating at 900 MHz Australian ISM band, custom designed for implantation under the skin of a rat. The antenna bandwidth is enhanced by partially connecting the antenna ground plane with the RFID circuit ground plane, leaving an optimized slot between them. The antenna operating environment is modeled and included when the antenna is simulated and optimized. Our results show that directivity of the antenna also improves with the ground connection. The purpose of this research is to modify an RFID-based telemetry device, which operates well in free space, for implantation into the body of an experimental rat.

Keywords

UHF antennas; biological techniques; biomedical communication; planar inverted-F antennas; prosthetics; radiofrequency identification; telemetry; ISM band; PIFA antenna; RF telemetry; RFID based telemetry device; RFID circuit ground plane; antenna bandwidth; bandwidth enhancement; frequency 900 MHz; implantable RFID tag antenna; size 11 mm; size 13 mm; size 5.6 mm; Bandwidth; Feeds; Radiofrequency identification; Skin; Slot antennas; Substrates; PIFA; RFID; bandwidth; telemetry; wireless;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Information Technologies (ISCIT), 2012 International Symposium on

Conference_Location

Gold Coast, QLD

Print_ISBN

978-1-4673-1156-4

Electronic_ISBN

978-1-4673-1155-7

Type

conf

DOI

10.1109/ISCIT.2012.6381000

Filename

6381000