Modeling of Open Square Bifilar Planar Spiral Coils

Abstract

In this paper an electrical model for square bifilar planar spiral coils (BPSC) is presented. Its main aim is the study of BPSC electrical parameters and behavior involving the frequency range where the first resonances (valley and peak) occur for bifilar coils in open-circuit configuration. A new approach to determine mutual capacitances of BPSCs based on coplanar waveguide (CPW) lines is presented. This study can be applied for modeling of passive self-resonant (PSR) sensors and wireless power transfer (WPT) systems. In order to validate the proposed model, three BPSCs were manufactured, tested by means of an impedance analyzer and also submitted to electromagnetic (EM) simulations. The results obtained, presented by means of tables and graphs, show that the present study is feasible and promising for the modeling of open square BPSCs.

Numerical Analysis of Bifilar Coil Geometry on Induction Heating Performance for Self-healing Asphalt

“…In addition, the performance of the IH system depends on the geometry of the coil, the nature of the material, the frequency of the power supply, electrical conductivity, temperature, etc. With the development of power electronic converters, controlling the voltage transfer ratio and frequency in an IH system is straightforward [23][24][25] .…”