EFFECTIVE MAGNETIC SHIELD FOR ON-CHIP INDUCTIVE STRUCTURES

摘要

A magnetic shield for an inductor is disclosed that may substantially reduce unwanted magnetic coupling from other inductive circuitry. An inductive apparatus includes an inductor and a magnetic shield to shield the inductor from magnetic coupling effects. The magnetic shield includes an inductive ring formed from a plurality of turns surrounding the inductor. The magnetic shield may be used to reduce a magnetic coupling between the inductor and an inductive circuit element. Thus, the number of turns of the inductive ring may be based on the magnetic coupling between the inductor and the inductive circuit element. Further, a distance between the magnetic shield and the inductor may be based on the number of turns of the inductive ring. The distance between the magnetic shield and the inductor is to offset a magnetic coupling between the inductor and the magnetic shield.

主权项

1. An inductive apparatus comprising:
an inductor; and a magnetic shield surrounding the inductor, wherein the magnetic shield comprises an inductive ring including at least two turns to shield the inductor from magnetic coupling effects.