EP 1425855 B9 20070718 - A WIDE BAND DIGITAL PHASE LOCKED LOOP (PLL) WITH A HALF-FREQUENCY OUTPUT
Title (en)
A WIDE BAND DIGITAL PHASE LOCKED LOOP (PLL) WITH A HALF-FREQUENCY OUTPUT
Title (de)
DIGITALER BREITBAND-PHASENREGELKREIS (PLL) MIT HALBFREQUENZAUSGANG
Title (fr)
BOUCLE A VERROUILLAGE DE PHASE NUMERIQUE A LARGE BANDE (PLL) A SORTIE DE DEMI-FREQUENCE
Publication
Application
Priority
- US 0226693 W 20020822
- US 93527801 A 20010822
Abstract (en)
[origin: EP1622270A1] A digital phase locked loop includes an automatic gain control that applies a gain to an input signal in order to provide a gain controlled signal. A 90° phase shifter applies a 90° phase shift to the gain controlled signal in order to provide a 90° phase shifted version of the gain controlled signal. A phase detector is driven by the gain controlled signal, by the 90° phase shifted version of the gain controlled signal, and by sinusoidal and co-sinusoidal signals. A loop filter integrates an output of the phase detector and provide servo equalization for the phase-locked loop. A digital dual frequency oscillator has a fundamental frequency controlled by an output signal from the loop filter. Also, the digital dual frequency oscillator generates the sinusoidal and co-sinusoidal signals.
IPC 8 full level
H03L 7/08 (2006.01); G01C 19/56 (2012.01); G01C 21/16 (2006.01)
CPC (source: EP US)
G01C 19/56 (2013.01 - EP US); G01C 21/188 (2020.08 - EP US); H03L 7/08 (2013.01 - EP US); H03L 7/0991 (2013.01 - EP US); H04L 27/1525 (2013.01 - EP US); E05Y 2400/30 (2013.01 - EP US); H03L 2207/50 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03019782 A2 20030306; WO 03019782 A3 20040212; AT E361586 T1 20070515; AT E397807 T1 20080615; AU 2002331675 A1 20030310; DE 60219930 D1 20070614; DE 60219930 T2 20080117; DE 60227011 D1 20080717; EP 1425855 A2 20040609; EP 1425855 B1 20070502; EP 1425855 B9 20070718; EP 1622270 A1 20060201; EP 1622270 B1 20080604; US 2003041667 A1 20030306; US 6564636 B2 20030520
DOCDB simple family (application)
US 0226693 W 20020822; AT 02768654 T 20020822; AT 05021687 T 20020822; AU 2002331675 A 20020822; DE 60219930 T 20020822; DE 60227011 T 20020822; EP 02768654 A 20020822; EP 05021687 A 20020822; US 93527801 A 20010822