Title :
A model for impedance of planar RF inductors based on magnetic films
Author :
Gromov, A. ; Korenivski, V. ; Rao, K.V. ; van Dover, R.B. ; Mankiewich, P.M.
Author_Institution :
R. Inst. of Technol., Stockholm, Sweden
fDate :
7/1/1998 12:00:00 AM
Abstract :
An electromagnetic model is presented for planar stripe inductors based on thin metallic magnetic films. The model solves Maxwell´s equations analytically, allowing eddy currents in both the conductor and the magnetic film, for an inductor structure in which the magnetic film completely encloses a stripe conductor. For typical inductor geometries, eddy currents in the magnetic film are the main factor limiting the efficiency of the device. We find, however, that stripe inductors with significantly enhanced inductance characteristics and high efficiencies (Q~10) up to 1 GHz range are feasible
Keywords :
Maxwell equations; eddy currents; electric impedance; inductors; magnetic thin film devices; Maxwell´s equations; eddy currents; efficiency; electromagnetic model; impedance; planar RF stripe inductors; thin metallic magnetic films; Conductive films; Eddy currents; Electromagnetic modeling; Geometry; Impedance; Inductors; Magnetic analysis; Magnetic films; Maxwell equations; Radio frequency;
Journal_Title :
Magnetics, IEEE Transactions on
