EP 2692060 A1 20140205 - LOW PHASE-NOISE INDIRECT FREQUENCY SYNTHESIZER
Title (en)
LOW PHASE-NOISE INDIRECT FREQUENCY SYNTHESIZER
Title (de)
INDIREKTER FREQUENZSYNTHESIZER MIT NIEDRIGEM PHASENRAUSCHEN
Title (fr)
SYNTHÉTISEUR INDIRECT DE FRÉQUENCES À FAIBLE BRUIT DE PHASE
Publication
Application
Priority
- FR 1100960 A 20110331
- EP 2012054922 W 20120320
Abstract (en)
[origin: WO2012130668A1] The invention relates to a low phase-noise frequency synthesizer (200), comprising, arranged in series, a first mixer (201) receiving, at the first input thereof, a reference signal (Sr) at a reference frequency Fr, a loop filter (202), and a voltage-controlled oscillator (203) outputting a microwave signal (So) at a second frequency Fo controlled so as to be a multiple of said reference frequency Fr, characterized in that the synthesizer further comprises: a means (204) for multiplying the frequency Fo of said microwave signal (So) by a factor N strictly greater than 1; a means (205, 207, OLk) for correcting the frequency (N.Fo) of the signal output by said multiplication means (204), which is configured to confine said frequency (N.Fo) within an interval [Fomin, Fomax] in which said output frequency Fo would vary if said multiplication factor N were equal to 1; a means (208) for dividing the frequency Fj of the signal output by said correction means (205, 207, OLk) by a factor equal to the expected ratio between said frequency Fj and the reference frequency Fr, said frequency-division means (208) being connected, at the output thereof, to the second input of the first mixer (201).
IPC 8 full level
H03L 7/185 (2006.01)
CPC (source: EP US)
H03L 7/185 (2013.01 - EP US); H03L 7/23 (2013.01 - US); H04L 27/148 (2013.01 - US); H03D 7/161 (2013.01 - US); H03L 2207/06 (2013.01 - US)
Citation (search report)
See references of WO 2012130668A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012130668 A1 20121004; EP 2692060 A1 20140205; FR 2973610 A1 20121005; FR 2973610 B1 20131101; US 2014016727 A1 20140116; US 9077592 B2 20150707
DOCDB simple family (application)
EP 2012054922 W 20120320; EP 12709134 A 20120320; FR 1100960 A 20110331; US 201214008996 A 20120320