EP 1117017 B1 20090909 - Means for generating a signal having a frequency that is substantially independent from temperature
Title (en)
Means for generating a signal having a frequency that is substantially independent from temperature
Title (de)
Vorrichtung um ein Signal zu erzeugen,dessen Frequenz wesentlich Temperatur unabhängig ist
Title (fr)
Dispositif pour produire un signal ayant une fréquence sensiblement indépendante de la température
Publication
Application
Priority
EP 00100427 A 20000110
Abstract (en)
[origin: EP1117017A1] The generator (1) comprises two oscillators (2, 3) and a mixer (4) which produces a heterodyned output approximately independent of temperature. The generators are configured so that the ratio of the quadratic coefficients of their approximately parabolic temperature-frequency characteristics is roughly equal to the ratio of their frequencies at a reference temperature. Preferably the first oscillator comprises a quartz resonator operating in flexional vibration and the second oscillator in torsional vibration mode.
IPC 8 full level
G04G 3/02 (2006.01); G04G 3/04 (2006.01); G04G 3/00 (2006.01); H03B 21/01 (2006.01)
CPC (source: EP KR US)
G04G 3/02 (2013.01 - KR); G04G 3/027 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1117017 A1 20010718; EP 1117017 B1 20090909; AT E442614 T1 20090915; CA 2396934 A1 20010719; CN 1201211 C 20050511; CN 1423762 A 20030611; DE 60042916 D1 20091022; HK 1056616 A1 20040220; JP 2003529750 A 20031007; JP 4939714 B2 20120530; KR 100700431 B1 20070327; KR 20020074192 A 20020928; US 2003052743 A1 20030320; US 6724266 B2 20040420; WO 0152001 A2 20010719; WO 0152001 A3 20011220
DOCDB simple family (application)
EP 00100427 A 20000110; AT 00100427 T 20000110; CA 2396934 A 20001207; CN 00818317 A 20001207; DE 60042916 T 20000110; EP 0012434 W 20001207; HK 03108942 A 20031209; JP 2001552156 A 20001207; KR 20027008807 A 20020708; US 16916002 A 20020924