Patent · US Active

ESD protection circuit for a high frequency circuit

US7564664B2 · kind B2 · utility

1Cited by

5References

10Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Herbert Knapp · Munich, DE
Hans-Dieter Wohlmuth · Munich, DE

Key dates

Filing date	May 11, 2006
Grant date	Jul 21, 2009
Priority date	—
Expiry date	Jun 10, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH02H9/046
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An ESD protection circuit is disclosed. In one embodiment, the ESD circuit is coupled to at least one signal transmission line and a positive and negative supply voltage of an integrated circuit, and includes at least one ESD-element connected between the signal transmission line and either one of the positive or negative supply voltages. At least one high-frequency transmission line is connected in series to the ESD-element and dimensioned in such a way that, at a predetermined high-frequency of a signal, an impedance of the current-path via the ESD-element is transformed, compared with the system impedance, from a low impedance to a very high impedance.

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