An analysis of the influence of design parameters on the resonant frequency of PCB coil

摘要

With the development of science and technology, the application of implantable biomedical electronic devices which play an important role in biological research and medical diagnostics becomes increasingly popular[1]. For the implantable electronic equipments, long-term, stable and secure power supply are critical issues. Nowadays wireless energy transfer is one of the most popular research field, it can penetrate the skin to supply electric energy to implantable biomedical electronic devices steady, so it is more and more used in the biomedical field. The main constraints restrict for wireless charging technology to realize miniaturization and portability is that the volume of the transmission coil is difficult to reduce. The production process of the PCB (printed circuit board) coil is simple, and its width, thickness, line spacing and other parameters can be precisely controlled, mass production of PCB coils have same parameters, meanwhile PCB coil is easy to integrate with external circuit. Compared with the solenoid coil, PCB coil has smaller volume and higher power density, so it has been widely used in magnetic resonance wireless power transmission field. In order to improve the efficiency of the radio transmission system fundamentally, by comparing the test methods, we study the PCB coil width and wire spacing, analyze the impact of these two factors on the resonant frequency. And we reach the following conclusion: The resonant frequency is positive correlated to the width of the coil when the wire spacing is fixed. When the coil width is constant, the wire spacing of the coil and the resonant frequency are positively correlated. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.