Apparatus and Methods for Magnetic Core Inductors with Biased Permeability

摘要

Inductive elements comprising anisotropic media and biasing coils for magnetically biasing thereof and methods of manufacture and operation for use in applications such as microelectronics. Application of an electrical current through the bias coils generates a magnetic field that biases the magnetic material such that a desirable orientation of anisotropy is achieved throughout the magnetic core and enables modulation of the inductive response of the device. Electrical conductors coupled to interconnects are magnetically coupled to magnetic core layers to produce self and/or mutual inductors.

主权项

1. A biased inductor comprising:
an anisotropic magnetic core lying in a core plane; an inductor coil wrapped around the core, the inductor coil extending in a direction parallel to the core plane, the inductor coil configured to generate a first magnetic field parallel to the core plane; and a bias coil configured to generate a bias magnetic field orthogonal to the first magnetic field along a length of the core.