Title :
Resonance analysis of figure-8 coil type permeance meters
Author :
Yamaguchi, M. ; Kawazu, T. ; Arai, K.I.
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
11/1/1993 12:00:00 AM
Abstract :
An equivalent circuit for a figure-eight coil type permeance meter is derived to analyze its LC resonance characteristics. The equivalent circuit for the pickup coils is derived using the same techniques used for thin film inductor analysis. The driving sheets and twisted lead wires are modeled according to the theory of distributed constant networks. Permeance meters are made, the frequency characteristics of the coils´ impedances are measured, and the validity of the equivalent circuit used is demonstrated. The LC resonance caused by the stray capacitance between the pickup coils and the driving sheets is discussed
Keywords :
copper alloys; equivalent circuits; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic permeability; magnetic permeability measurement; magnetic thin films; molybdenum alloys; nickel alloys; 0.3 micron; CuMoNiFe sputtered anisotropic film; LC resonance characteristics; distributed constant networks; driving sheets; eddy current; equivalent circuit; ferromagnetic resonance; figure-eight coil; frequency characteristics; permeance meter; pickup coils; resonance analysis; stray capacitance; thin film inductor analysis; thin film permeability measurement; Coils; Equivalent circuits; Fixtures; Frequency; Impedance; Magnetic films; Resonance; Thin film circuits; Thin film inductors; Wires;
Journal_Title :
Magnetics, IEEE Transactions on
