Hosain, Md. Kamal, Kouzani, Abbas Z., Tye, Susannah, Walder, Ken and Kong, Lingxue 2012, Design of a miniature UHF PIFA for DBS implants, in CME 2012 : Proceedings of the 2012 IEEE/ICME International Conference on Complex Medical Engineering, IEEE Computer Society, Los Alamitos, Calif., pp. 485-489.
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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 εr = 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.
Field of Research
090606 Photonics and Electro-Optical Engineering (excl Communications)