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US 7,030,725 B2Granted
Semiconductor device with electrically coupled spiral inductors
AssigneeMicron Technology, Inc.
InventorsKie Y Ahn, Leonard Forbes
Life of this patent
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Abstract
Multiple coupled inductors are formed in a well in a semiconductor device. The inductors, which preferably are spiral inductors, are strongly coupled with high quality factors. The coupled inductors may be used as efficient signal splitting and combining circuits.
Claims7
A semiconductor signal splitter comprising:
- a first spiral conductor fabricated substantially in a first horizontal plane;
- a second spiral conductor fabricated substantially in a second horizontal plane above the first plane;
- and
- a third spiral conductor fabricated substantially in a third horizontal plane above the second plane, wherein the first, second and third spiral conductors are axially aligned, such that the first and second spiral conductors are positioned to be inductively coupled during operation, and the second and third spiral conductors are positioned to be inductively coupled during operation;
- whereby:
- when a signal is applied to said second spiral conductor, a first portion of said signal is output on said first spiral conductor and a second portion of said signal is output on said third spiral conductor.
3 more elements
Dependencies are inferred from the claim text.