Inductor for high frequency circuits
First Claim
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1. An integrated circuit for use in high frequency applications that includes an inductive structure, said structure comprising:
- a) a first electrical conductor comprising a sequence of substantially parallel first conductive elements electrically connected in parallel, each having first and second ends and disposed sequentially to form a first planar pattern, said first conductive elements having unequal electrical lengths and being electrically isolated from each other along said first pattern; and
a second electrical conductorb) comprising a sequence of substantially parallel second conductive elements connected in parallel, each having first and second ends and disposed sequentially to form a second planar pattern, said second conductive elements having unequal electrical lengths and being electrically isolated from each other along said second pattern, said first planar pattern separated from said second planar pattern by a layer of dielectric material,wherein individual said second ends of sequentially longer ones of said first conductive elements are electrically coupled to individual first ends of sequentially shorter ones of said second conductive elements thereby forming a combination of substantially equal length, equiresistant conductive elements from said first ends of said first conductive elements to said second ends of said second conductive elements.
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Abstract
An inductor fabricated for semiconductor use is disclosed. The inductor is formed with a multi-level, multi-element conductor metallization structure which effectively increases conductance throughout the inductor thereby increasing the inductor'"'"'s Q. The structure of the inductor may also provide for routing the current flowing through the multi-level, multi-element conductors in a way that increases the self inductance between certain conductive elements, thereby increasing the inductor'"'"'s total inductance.
81 Citations
14 Claims
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1. An integrated circuit for use in high frequency applications that includes an inductive structure, said structure comprising:
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a) a first electrical conductor comprising a sequence of substantially parallel first conductive elements electrically connected in parallel, each having first and second ends and disposed sequentially to form a first planar pattern, said first conductive elements having unequal electrical lengths and being electrically isolated from each other along said first pattern; and
a second electrical conductorb) comprising a sequence of substantially parallel second conductive elements connected in parallel, each having first and second ends and disposed sequentially to form a second planar pattern, said second conductive elements having unequal electrical lengths and being electrically isolated from each other along said second pattern, said first planar pattern separated from said second planar pattern by a layer of dielectric material, wherein individual said second ends of sequentially longer ones of said first conductive elements are electrically coupled to individual first ends of sequentially shorter ones of said second conductive elements thereby forming a combination of substantially equal length, equiresistant conductive elements from said first ends of said first conductive elements to said second ends of said second conductive elements. - View Dependent Claims (2, 3, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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5. An inductive structure integrable with a semiconductor integrated circuit, comprising:
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a) a dielectric substrate; b) a first electrical conductor comprising a sequence of substantially parallel first conductive elements electrically connected in parallel, each having first and second ends and disposed in sequential order as a first pattern upon said substrate, said first conductive elements having unequal electrical lengths and being electrically isolated from each other along said first pattern; and c) a second electrical conductor comprising a sequence of substantially parallel second conductive elements electrically connected in parallel, each having first and second ends, and disposed in sequential order upon said substrate as a second pattern in proximity to elements of said first conductor, said second conductive elements having unequal electrical lengths and being electrically isolated from each other along said second pattern, wherein individual second ends of sequentially longer ones of said first conducting elements are coupled to individual first ends of sequentially shorter ones of said second conductive elements, thereby forming a sequence of substantially equal length, equiresistant conductive path elements from said first ends of said first conductive elements to said second ends of said second conductive elements.
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Specification