Global Patent Index - EP 1410511 A2

EP 1410511 A2 20040421 - HIGH FREQUENCY VCXO STRUCTURE

Title (en)

HIGH FREQUENCY VCXO STRUCTURE

Title (de)

STRUKTUR EINES HOCHFREQUENZ SPANNUNGSGESTEUERTEN KRISTALLOSZILLATORS

Title (fr)

STRUCTURE D'OSCILLATEUR A QUARTZ HAUTE FREQUENCE COMMANDE EN TENSION

Publication

EP 1410511 A2 20040421 (EN)

Application

EP 02725583 A 20020409

Priority

  • US 0211121 W 20020409
  • US 82912901 A 20010409
  • US 4724902 A 20020114

Abstract (en)

[origin: WO02082656A2] A frequency-adjustable oscillator suitable for digital signal clock synchronization comprises a crystal oscillator circuit for generating a driving signal and having a voltage-variable control input for adjusting a frequency of the driving signal, a phase detector circuit for generating a phase offset signal, a filter which operates on the phase offset signal to produce a VCO control signal, a voltage controlled oscillator circuit operably linked to the filter and responsive to the VCO control signal for generating an analog controlled-frequency signal, a frequency divider circuit for generating a reduced frequency feedback signal in response to the controlled-frequency signal. The frequency-adjustable oscillator also includes a double-sided package including a platform having a central portion and an outer portion with sidewalls extending substantially upwardly and substantially downwardly from the outer portion of the platform. The upwardly extending sidewalls and the platform form a first cavity adapted to receive and electrically connect the quartz resonator. The downwardly extending sidewalls and the platform forming a second cavity adapted to receive and electrically connect at least one electronic component. A cover is coupled with the first cavity to create an isolated environment for containing the quartz resonator.

IPC 1-7

H03L 7/18

IPC 8 full level

H03B 5/32 (2006.01); H03L 1/02 (2006.01); H03L 7/08 (2006.01); H03L 7/099 (2006.01); H03L 7/18 (2006.01)

CPC (source: EP)

H03L 1/025 (2013.01); H03L 7/099 (2013.01); H03L 7/18 (2013.01)

Citation (search report)

See references of WO 02082656A3

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

WO 02082656 A2 20021017; WO 02082656 A3 20040219; AU 2002256138 A1 20021021; CA 2442851 A1 20021017; EP 1410511 A2 20040421; JP 2005509315 A 20050407

DOCDB simple family (application)

US 0211121 W 20020409; AU 2002256138 A 20020409; CA 2442851 A 20020409; EP 02725583 A 20020409; JP 2002580496 A 20020409