Patent ID: 6624735
Filing Date: 2003-09-23
Classification: H01F,Y10T

Abstract:
A method of manufacturing a three-terminal variable inductor comprising the steps of:providing a substrate; forming first, second and third terminals on the substrate; forming a first spiral coil electrode so as to be electrically connected between said first terminal electrode and said third terminal electrode; forming a second spiral coil electrode so as to be electrically connected between said second terminal electrode and said third terminal electrode; forming at least one trimming electrode so as not to cross any portion of said first spiral coil electrode and said second spiral coil electrode, between the outer portion of said first spiral coil electrode and the outer portion of said second spiral coil electrode, the outer portions being disposed in proximity to each other, said at least one trimming electrode electrically connecting said first spiral coil electrode and said second spiral coil electrode; and trimming said at least one trimming electrode.