Open AccessCalculation of the inductance and AC resistance of planar rectangular coils
Author(s) -
Kim D.H.,
Park Y.J.
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2016.0696
Subject(s) - inductance , planar , equivalent series inductance , electrical engineering , materials science , structural engineering , engineering , mechanical engineering , acoustics , physics , computer science , voltage , computer graphics (images)
An effective calculation method for AC resistance and the inductance of planar rectangular spiral coils is proposed. For the calculation, a volume filament model and its equivalent circuit are provided. By using the method, AC resistance and inductance are calculated accurately in megahertz frequency range by including both skin and proximity effects. The method is verified with experiments and used to optimise rectangular spiral coils for the maximum quality factor ( Q ‐factor) at 6.78 MHz. A small planar rectangular coil is shown to have the maximum Q ‐factor when the width of the innermost coil loop is about a half of that of the outermost coil loop.