Patent · US Expired

Frequency-stabilized transmitting/receiving configuration

US6771937B2 · kind B2 · utility

2Cited by

13References

11Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Markus Doetsch · Köniz, CH
Peter Jung · Munich, DE
Jörg Plechinger · Hersbruck, DE
Peter Schmidt · Ellerstadt, DE

Key dates

Filing date	May 24, 2001
Grant date	Aug 3, 2004
Priority date	—
Expiry date	Jan 19, 2023

Classification

Technology area (CPC H)Electricity
CPC primaryH03J7/047
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A circuit configuration has a radio-frequency section with a receiving mixing stage, and has a signal processing circuit with an A/D converter, a digital filter and a frequency estimator. The frequency estimator continuously determines a first frequency correction control signal, which is representative of a frequency offset between the frequency of an IF received signal and a frequency which is characteristic of a pass band of the filter. The first frequency correction control signal is used for readjustment of the mixing frequency.

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