Integrable radio receiver circuit for frequency-modulated digital signals
US6539066B1 · kind B1 · utility
34Cited by
9References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1999 |
| Grant date | Mar 25, 2003 |
| Priority date | — |
| Expiry date | Nov 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An FM receiver, which contains quadrature downward mixing to a low IF, analog IF polyphase filters in quadrature signal paths and an analog quadrature signal demodulator, has AC coupling in its two quadrature signal paths. At its output, the demodulator produces a voltage that is proportional to the input frequency and is supplied to the input of a decision circuit that determines the digital signal state. The circuit according to the invention can be used in DECT receivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.