کنفرانس مهندسی برق ایران

صفحه اصلی / بیست و نهمین کنفرانس مهندسی برق ایران

Design and Parametric Study of Circular Polarized Electrically Small Archimedean Spiral PIFA Antenna for Biomedical Implants in ISM Band

نویسندگان :

Sina Saeedi¹ Arezoo Abdi² Farhad Ghorbani³ Hadi Aliakbarian⁴ Ramezan Ali Sadeghzadeh⁵

1- K.N.Toosi University of Technology 2- K.N.Toosi University of Technology 3- K.N.Toosi University of Technology 4- K.N.Toosi University of Technology 5- K.N.Toosi University of Technology

کلمات کلیدی :

implantable antenna, circular polarization, implantable medical device, PIFA antenna, Archimedean spiral

چکیده :

In this paper, a miniaturized implantable circularly polarized Archimedean spiral Planar Inverted-F Antenna (SPIFA) is presented. The antenna is electrically small, with a volume of π × 5 mm × 5 mm × 2.2 mm and a diameter of 0.03. This antenna operates in the ISM frequency band (902.8-928 MHz) and is simulated in a three-layered tissue including skin, fat, and muscle. Characteristics of the proposed structure make it a suitable option for implantable application. Furthermore, the effects of different parameters include the length of Archimedean spiral, distance from feed to short pin, substrate thickness, dielectric constant, and dielectric loss tangent on bandwidth, resonant frequency, and total efficiency, are analyzed to achieve an acceptable performance for implantable applications in this frequency band. The final antenna has a bandwidth of 25 MHz and a total efficiency of -16 dB.

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