Patent · US Active

Low-pass filter

US9479141B2 · kind B2 · utility

1Cited by

5References

16Claims

0Family size

Assignee

NXP B.V. · NL

Inventors

Andreas Kollmann · Pfalzgrafenweiler, DE
Steffen Rode · Lüneburg, DE
Joachim Utzig · Nijmegen, NL
Joerg Syré · Elmshorn, DE

Key dates

Filing date	Nov 16, 2015
Grant date	Oct 25, 2016
Priority date	—
Expiry date	Nov 16, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH03H11/245
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A low-pass filter comprising: a filter input terminal; a filter output terminal; a filter FET configured to provide a resistance between the filter input terminal and the filter output terminal; a filter capacitor connected between the filter output terminal and a reference terminal; a bias FET configured to provide a bias voltage to the filter FET; a buffer connected between the filter input terminal and the bias FET, the buffer configured to source a bias current for the bias FET; and an offset voltage source configured to contribute to the bias voltage provided to the filter FET.

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