Wire capacitor for transmitting AC signals

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United States of America Patent

PATENT NO 9929722
SERIAL NO

15419236

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Abstract

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Embodiments herein describe a transmission line used to carry an AC signal (e.g., a high-speed clock signal) between two different voltage domains in an IC. Instead of dividing the transmission line into multiple segments each with a buffer, in one embodiment the transmission line is arranged to form a capacitor. That is, the conductive material forming the transmission line is arranged in the IC to result in a desired capacitance. This capacitance can be used to replace a discrete capacitor that would otherwise be used with a buffer (e.g., level shifter) located at the end of the transmission line for converting the AC signal from a first voltage domain to a second voltage domain.

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Patent Owner(s)

Patent OwnerAddress
INTERNATIONAL BUSINESS MACHINES CORPORATIONNEW ORCHARD ROAD ARMONK NY 10504

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Friend, David M Stewartville, US 24 50
Kesselring, Grant P Rochester, US 36 106
Steffen, Christopher W Rochester, US 33 46
Strom, James D Rochester, US 36 131

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