Patent · US Active

Integrated circuits with series-connected inductors

US8068003B2 · kind B2 · utility

10Cited by

9References

19Claims

0Family size

Assignee

Altera Corporation · US

Inventors

Shuxian Chen · Fremont, US
Jeffrey T. Watt · Palo Alto, US

Key dates

Filing date	Mar 10, 2010
Grant date	Nov 29, 2011
Priority date	—
Expiry date	Mar 10, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH01F2017/0086
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An integrated circuit inductor may have upper and lower loop-shaped line portions that are connected in series. The upper and lower portions may have 45° bends that form hexagonal or octagonal loops. Each loop portion may have one or more turns. Intervening metal-free regions of metal routing layers may be formed between the two layers to reduce capacitive coupling. Each loop portion may have sets of two or more metal lines shorted in parallel by vias. The upper and lower loops may be laterally offset or nested to reduce capacitive coupling.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.