Design of inductor-capacitor circuits for wireless power transfer for biomedical applications

Abstract

This paper presents an analytical design approach for planar inductor-capacitor (LC) circuits for biomedical wireless power transfer (WPT) applications. This research makes use of the resonant inductive coupling between a transmitter and receiver coil in a series-parallel topology. The micro-electromechanical systems (MEMS)-based LC circuits are operated within a frequency range of 10–300 MHz. Several design cases are realized by varying the values of the number of turns, line width, and spacing width of the coil, while maintaining resonant frequency ranges circuits sizes that are compatible with biomedical applications and MEMS fabrication standards. In addition, the effects of such variations on the resonant frequency and quality factor are investigated. The findings of this paper present a simple approach to achieve different design requirements of planar LC circuits in WPT applications.