Design of a miniature UHF PIFA for DBS implants

Author

Hosain, Md Kamal ; Kouzani, Abbas Z. ; Tye, Susannah ; Walder, Ken ; Kong, Lingxue

Author_Institution

Sch. of Eng., Deakin Univ., Melbourne, VIC, Australia

fYear

2012

fDate

1-4 July 2012

Firstpage

485

Lastpage

489

Abstract

This paper presents design and simulation of a miniature rectangular spiral planar inverted-F antenna (PIFA) at UHF RFID band (902.75 - 927.25 MHz) for integration in batteryless deep brain stimulation implants. Operation in the UHF band offers small antenna size and longer transmission range. The proposed antenna has the dimensions of 10 mm × 11.5 mm × 1.6 mm, resonance frequency of 920 MHz with a bandwidth of 18 MHz at return loss of -10 dB. A dielectric substrate of FR-4 of ε_r = 4.5 and δ = 0.018 with thickness of 1.5644 mm is used in this design. The resonance, radiation characteristics as well as the specific absorption rate distribution induced by the designed antenna within a four layer spherical head model is evaluated by using electromagnetic modeling software which employs the finite element method.

Keywords

biomedical electronics; brain; finite element analysis; planar inverted-F antennas; prosthetics; radiofrequency identification; DBS implants; UHF RFID band; batteryless deep brain stimulation implants; dielectric substrate; electromagnetic modeling software; finite element method; four layer spherical head; frequency 902.75 MHz to 927.25 MHz; loss 10 dB; miniature UHF PIFA design; miniature rectangular spiral POFA; planar inverted F antenna; size 1.5644 mm; size 1.6 mm; size 10 mm; size 11.5 mm; Antennas; Australia; Bones; Muscles; Radiofrequency identification; Resonant frequency; DBS; PIFA; RFID; UHF; implant;

fLanguage

English

Publisher

ieee

Conference_Titel

Complex Medical Engineering (CME), 2012 ICME International Conference on

Conference_Location

Kobe

Print_ISBN

978-1-4673-1617-0

Type

conf

DOI

10.1109/ICCME.2012.6275746

Filename

6275746