Patent · US Active

Demodulator and method for demodulating a carrier signal

US8625727B2 · kind B2 · utility

2Cited by

10References

32Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Walter Kargl · Graz, AT
Edmund Ehrlich · Grambach, AT

Key dates

Filing date	Apr 2, 2010
Grant date	Jan 7, 2014
Priority date	—
Expiry date	Jan 15, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2027/0067
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A demodulator includes a sampler and a trigger unit. The sampler is configured to sample a carrier signal based on a trigger signal to obtain a demodulated signal. The trigger unit is configured to detect a zero crossing of the carrier signal or an extreme value of an amplitude of the carrier signal. Further, the trigger unit is configured to provide the trigger signal based on the detected zero crossing or the detected extreme value, so that the carrier signal is sampled by the sampler with a predefined phase shift to the detected zero crossing or the detected extreme value. The predefined phase shift is larger than 30° plus an integer multiple of 90° and lower than 60° plus the same integer multiple of 90° in reference to the carrier signal.

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