Design of Efficient Inductive Power Link with Small Size Planar Spiral Coil Receiver for Medical Applications

Abstract

The efficiency of a WPT system greatly depends on both the geometry andoperating frequency of the transmitting and receiving structures. Geneticoptimizations algorithms are presented to prepare the proposed designparameters using MATLAB to optimize the link efficiency. Single anddouble layer PSCs are optimally designed with minimal proximity losseseffect. In this paper, we used the benefit of a double layer technique tominiaturize the receiver PCS size. The proposed single layer (10×10) mm2and double layer (8×8) mm2 PSCs are validated and simulated usingHFSS 15.03 software at a frequency of 13.56MHz in both cases of the air,and human biological skin tissue as intermediate material between thetransmitter and receiver PSCs. The calculated and simulated results ofboth proposed receiver PSCs are compared for both cases of intermediatematerials for their efficiency behaviors. The results show that in the caseof biological tissue, the deterioration in PTE using 8mm double layerreceiver is only 6.5 % (PTE =70.96%), which is less than 13.5 %(PTE=68.6%) using single layer 10mm receiver. A comparative surveyhas been done for similar works of different authors in the last decade. Incomparison with other works, the proposed double layer (8×8) mm2 PSCsis smaller in size and more efficient for use in the IMDs