ES2170073T3 - Oscilador para una estacion base de una red celular digital de radiocomunicaciones. - Google Patents

Oscilador para una estacion base de una red celular digital de radiocomunicaciones.

Info

Publication number
ES2170073T3
ES2170073T3 ES93921739T ES93921739T ES2170073T3 ES 2170073 T3 ES2170073 T3 ES 2170073T3 ES 93921739 T ES93921739 T ES 93921739T ES 93921739 T ES93921739 T ES 93921739T ES 2170073 T3 ES2170073 T3 ES 2170073T3
Authority
ES
Spain
Prior art keywords
oscillator
frequency
base station
stabilized
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
ES93921739T
Other languages
English (en)
Inventor
Arto Jantti
Risto Saukkonen
Veli Juola
Tapani Karki
Lassi Vaananen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Inc
Original Assignee
Nokia Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Inc filed Critical Nokia Inc
Application granted granted Critical
Publication of ES2170073T3 publication Critical patent/ES2170073T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L3/00—Starting of generators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/104—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional signal from outside the loop for setting or controlling a parameter in the loop

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Transceivers (AREA)
  • Radio Relay Systems (AREA)

Abstract

EL INVENTO SE REFIERE A UNA UNIDAD OSCILADORA PARA UNA ESTACION DE BASE O SIMILAR EN UNA RED DE RADIO CELULAR DIGITAL. LA UNIDAD OSCILADORA CONSTA DE UN OSCILADOR AJUSTABLE DE CRISTAL (21) ESTABILIZADO. LA UNIDAD OSCILADORA ADICIONALMENTE COMPRENDE DISPOSITIVOS DE MEMORIA NO VOLATIL (27) EN LA QUE SE ALMACENA INFORMACION DE CONTROL QUE DEFINE LA FRECUENCIA DEL OSCILADOR DE CRISTAL ESTABILIZADO (21) AL COMIENZO DE LA UNIDAD OSCILADORA, MEDIOS (30,31,32) PARA DERIVAR UNA FRECUENCIA DE REFERENCIA DESDE UNA CONEXION FIJA DE TRANSMISION DIGITAL, COMO UNA CONEXION PCM, ENTRE LA ESTACION DE BASE Y LA RESTANTE RED DE RADIO CELULAR, UN CIRCUITO DE CONTROL DE FRECUENCIA (21,22,23,24) PARA MANTENER UNA ESTABILIDAD A LARGO PLAZO DEL OSCILADOR DE CRISTAL ESTABILIZADO (21) EN LA BASE DE UNA MEDIA A LARGO PLAZO DE LA DIFERENCIA ENTRE LA FRECUENCIA DEL OSCILADOR DE CRISTAL ESTABILIZADO Y LA MENCIONADA FRECUENCIA DE REFERENCIA.
ES93921739T 1992-04-02 1993-03-30 Oscilador para una estacion base de una red celular digital de radiocomunicaciones. Expired - Lifetime ES2170073T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI921461A FI95334C (fi) 1992-04-02 1992-04-02 Oskillaattoriyksikkö digitaalisen solukkoradioverkon tukiasemaa tai vastaavaa varten

Publications (1)

Publication Number Publication Date
ES2170073T3 true ES2170073T3 (es) 2002-08-01

Family

ID=8535030

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93921739T Expired - Lifetime ES2170073T3 (es) 1992-04-02 1993-03-30 Oscilador para una estacion base de una red celular digital de radiocomunicaciones.

Country Status (10)

Country Link
US (1) US5473284A (es)
EP (1) EP0671079B1 (es)
JP (1) JP3352688B2 (es)
AT (1) ATE211324T1 (es)
AU (1) AU671441B2 (es)
DE (1) DE69331393T2 (es)
ES (1) ES2170073T3 (es)
FI (1) FI95334C (es)
NO (1) NO308929B1 (es)
WO (1) WO1993020619A1 (es)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI96075C (fi) * 1993-05-14 1996-04-25 Nokia Telecommunications Oy Menetelmä radiolähettimen käynnistämiseksi ja radiolähetin
US5473640A (en) * 1994-01-21 1995-12-05 At&T Corp. Phase-lock loop initialized by a calibrated oscillator-control value
US5740525A (en) * 1996-05-10 1998-04-14 Motorola, Inc. Method and apparatus for temperature compensation of a reference oscillator in a communication device
DE19634740A1 (de) * 1996-08-28 1998-03-05 Sel Alcatel Ag Funkfeststation mit abstimmbarem Oszillator und Verfahren zum Abstimmen des Oszillators
US5883844A (en) * 1997-05-23 1999-03-16 Stmicroelectronics, Inc. Method of stress testing integrated circuit having memory and integrated circuit having stress tester for memory thereof
US5949291A (en) * 1998-01-21 1999-09-07 Lucent Technologies, Inc. Cordless telephone with digital frequency adjustment
US6124764A (en) * 1999-01-22 2000-09-26 Telefonaktiebolaget Lm Ericsson Stable low-power oscillator
US6304517B1 (en) 1999-06-18 2001-10-16 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for real time clock frequency error correction
US6194970B1 (en) * 1999-08-19 2001-02-27 Nortel Networks Corporation Oscillator stability monitoring and compensation system
FI20000638L (fi) 2000-03-17 2001-09-18 Nokia Mobile Phones Ltd Oskillaattorin säätö
US7546097B2 (en) * 2002-03-06 2009-06-09 Qualcomm Incorporated Calibration techniques for frequency synthesizers
US20100007392A1 (en) * 2008-07-09 2010-01-14 Mediatek Inc. Crystal auto-calibration method and apparatus
US8698568B2 (en) * 2012-04-26 2014-04-15 Silicon Integrated Systems Corp. Automatic self-calibrated oscillation method and apparatus using the same
EP2903161B1 (en) * 2014-01-31 2016-07-13 U-blox AG Reliable crystal oscillator start-up

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2483704A1 (fr) * 1980-06-03 1981-12-04 Thomson Csf Dispositif de prepositionnement de frequence pour synthetiseur indirect de frequence et synthetiseur comportant un tel dispositif
US4847569A (en) 1987-02-20 1989-07-11 Wavetek Corporation Automatic calibration system for a voltage control oscillator
GB2205460B (en) * 1987-06-02 1991-09-04 Multitone Electronics Plc Local oscillators for radio receivers
US4815109A (en) * 1987-06-25 1989-03-21 Racal Data Communications Inc. Sampling clock synchronization
DE3735011A1 (de) * 1987-10-16 1989-04-27 Philips Patentverwaltung Schaltungsanordnung zur temperaturkompensation
EP0482020A4 (en) * 1989-06-22 1992-09-30 Advanced Systems Research Pty. Ltd. Self-calibrating temperature-compensated frequency source

Also Published As

Publication number Publication date
FI95334B (fi) 1995-09-29
ATE211324T1 (de) 2002-01-15
DE69331393D1 (de) 2002-01-31
FI95334C (fi) 1996-01-10
AU3755293A (en) 1993-11-08
FI921461A0 (fi) 1992-04-02
AU671441B2 (en) 1996-08-29
EP0671079A1 (en) 1995-09-13
WO1993020619A1 (en) 1993-10-14
JP3352688B2 (ja) 2002-12-03
NO943665L (no) 1994-11-30
NO943665D0 (no) 1994-09-30
NO308929B1 (no) 2000-11-13
DE69331393T2 (de) 2002-06-20
US5473284A (en) 1995-12-05
FI921461A7 (fi) 1993-10-03
EP0671079B1 (en) 2001-12-19
JPH07508621A (ja) 1995-09-21

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