Patent · US Active

Transmission line common-mode filter

US8126402B1 · kind B1 · utility

5Cited by

5References

20Claims

0Family size

Assignee

NVIDIA Corporation · US

Inventors

Ross F. Jatou · San Jose, US
Chen-Yu Wang · Danei, TW

Key dates

Filing date	Dec 5, 2006
Grant date	Feb 28, 2012
Priority date	—
Expiry date	Dec 1, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH03H7/427
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

One embodiment of the invention sets forth a technique for using a resonator as a common-mode filter for attenuating unwanted common-mode frequencies in a differential signal. Filtering these unwanted frequencies may reduce electromagnetic interference from the differential signal pair in nearby electronic devices. Since common-mode filtering is employed, the resonator reduces the unwanted common-mode noise at specific frequencies without distorting the information-carrying differential signals. Further, since the filter is implemented as a PWB resonator, the incremental cost of including this filter on the PWB is relatively small.

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