EP 0872021 A1 19981021 - UNIVERSAL RF RECEIVER
Title (en)
UNIVERSAL RF RECEIVER
Title (de)
UNIVERSELLER HF-EMPFÄNGER
Title (fr)
RECEPTEUR HF UNIVERSEL
Publication
Application
Priority
- US 9612727 W 19960731
- US 190795 P 19950804
- US 1056896 P 19960125
Abstract (en)
[origin: WO9706604A1] A universal receiver (10) for processing RF signals modulated by various analog and digital modulation techniques. The receiver (10) includes a down converter (52) for converting received RF signals to in-phase and quadrature zero IF signals, and active low pass filter (106, 108) for channel selection and an up converter (132, 134) for converting the channel selected in-phase and quadrature zero IF signals to an IF signal. Only moderate system gain is introduced at zero IF in order to avoid increasing any DC offsets. The receiver (10) further includes DC offset compensation circuitry and a period-to-digital (P/D) converter (260) for quantizing the IF signal. A signal processor (35) equalizes and demodulates the IF signal to recover the transmitted signal.
IPC 1-7
IPC 8 full level
H03D 3/00 (2006.01); H03D 7/16 (2006.01); H04B 1/26 (2006.01)
CPC (source: EP)
H03D 3/008 (2013.01); H03D 7/166 (2013.01); H04B 1/0003 (2013.01); H04B 1/0007 (2013.01); H04B 1/26 (2013.01)
Citation (search report)
See references of WO 9706604A1
Designated contracting state (EPC)
DE FI FR GB IT
DOCDB simple family (publication)
WO 9706604 A1 19970220; CA 2227869 A1 19970220; EP 0872021 A1 19981021
DOCDB simple family (application)
US 9612727 W 19960731; CA 2227869 A 19960731; EP 96927313 A 19960731