Patent · US Active

Second-order filter with notch for use in receivers to effectively suppress the transmitter blockers

US9112476B2 · kind B2 · utility

41Cited by

1References

19Claims

0Family size

Assignee

Intel Deutschland GmbH · DE

Inventors

Umut Basaran · Unterhaching, DE
Josef Schmal · Hersbruck, DE
Stefan Herzinger · Sauerlach, DE
Herbert Stockinger · Schliersee, DE
Volker Thomas · Gilching, DE

Key dates

Filing date	Feb 27, 2012
Grant date	Aug 18, 2015
Priority date	—
Expiry date	Sep 28, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH03H2007/013
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

The disclosed invention relates to a transceiver system comprising a notch filter element configured to suppress transmitter blockers (i.e., transmitter interferer signals) within a reception path. In some embodiments, the transceiver front-end comprises a differential reception path, having a first differential branch and a second differential branch, configured to provide an RF differential input signal having a transmitter blocker to a transimpedance amplifier, comprising a first-order active filter and a notch filter element. The notch filter element comprises a stop band corresponding to a frequency of a transmitted signal, such that the notch filter element suppresses the transmitted blocker without degrading the signal quality of the received differential input signal.

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