Differentially Fed Dual-Band Implantable Antenna for Biomedical Applications

作者：Duan Zhu^*; Guo Yong Xin; Xue Rui Feng; Je Minkyu; Kwong Dim Lee

来源：IEEE Transactions on Antennas and Propagation, 2012, 60(12): 5587-5595.

DOI：10.1109/TAP.2012.2209197

• Communication link
• differential feeding
• dual-band antennas
• implanted antennas
• link margin
• specific absorption rate (SAR)

A novel differentially fed dual-band implantable antenna is proposed for the first time for a fully implantable neuro-microsystem. The antenna operates at two center frequencies of 433.9 MHz and 542.4 MHz, which are close to the 402-405 MHz medical implant communication services (MICS) band, to support sub-GHz wideband communication for high-data rate implantable neural recording application. The size of the antenna is 480.06 mm(3) (27 mm 14 mm 1.27 mm). The simulated and measured bandwidths are 7.3% and 7.9% at the first resonant frequency, 5.4% and 6.4% at the second resonant frequency. The specific absorption rate (SAR) distribution induced by the implantable antenna inside a tissue-mimicking solution is evaluated. The performance of the communication link between the implanted antenna and external half-wavelength dual-band dipole is also examined.

• 出版日期2012-12