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WO2005071840A3 - Systemes de telecommunication - Google Patents

Systemes de telecommunication Download PDF

Info

Publication number
WO2005071840A3
WO2005071840A3 PCT/GB2004/004923 GB2004004923W WO2005071840A3 WO 2005071840 A3 WO2005071840 A3 WO 2005071840A3 GB 2004004923 W GB2004004923 W GB 2004004923W WO 2005071840 A3 WO2005071840 A3 WO 2005071840A3
Authority
WO
WIPO (PCT)
Prior art keywords
reference frequency
frequency generator
frequency signals
operable
multiple voltage
Prior art date
Application number
PCT/GB2004/004923
Other languages
English (en)
Other versions
WO2005071840A2 (fr
Inventor
Rob Bristow
Lars Jonsson
Thomas Mattsson
Original Assignee
Ericsson Telefon Ab L M
Rob Bristow
Lars Jonsson
Thomas Mattsson
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
Priority claimed from EP04250308A external-priority patent/EP1557951B1/fr
Application filed by Ericsson Telefon Ab L M, Rob Bristow, Lars Jonsson, Thomas Mattsson filed Critical Ericsson Telefon Ab L M
Priority to US10/597,292 priority Critical patent/US20080056427A1/en
Priority to JP2006550267A priority patent/JP4625030B2/ja
Publication of WO2005071840A2 publication Critical patent/WO2005071840A2/fr
Publication of WO2005071840A3 publication Critical patent/WO2005071840A3/fr

Links

Classifications

    • 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
    • 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
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • 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
    • H03L7/14—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail
    • 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
    • H03L7/14—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail
    • H03L7/141—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail the phase-locked loop controlling several oscillators in turn
    • 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
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Transmitters (AREA)

Abstract

Selon l'invention, un circuit de production de fréquence de référence destiné à un dispositif d'émission et réception à fréquence radio, comprend: un premier oscillateur commandé en tension qui peut fonctionner pour produire un premier signal de fréquence de référence,; un second oscillateur commandé en tension qui peut fonctionner pour produire un second signal de fréquence de référence; un ensemble commutable de diviseurs connectés pour recevoir le premier et le second signal de fréquence de référence et qui peuvent fonctionner pour produire une ensemble de signaux de fréquence de référence de sortie, un premier sous-ensemble de l'ensemble de fréquences de référence de sortie étant dérivé de la première fréquence de référence, et un second sous-ensemble de l'ensemble de fréquences de référence de sortie étant dérivé de la seconde fréquence de référence, le premier et le second signal de fréquence de référence n'étant pas égaux en fréquence aux signaux de fréquence de référence de sortie de l'ensemble de signaux de fréquence de référence de sortie.
PCT/GB2004/004923 2004-01-21 2004-11-23 Systemes de telecommunication WO2005071840A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/597,292 US20080056427A1 (en) 2004-01-21 2004-11-23 Telecommunications Systems
JP2006550267A JP4625030B2 (ja) 2004-01-21 2004-11-23 通信システム

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP04250308A EP1557951B1 (fr) 2004-01-21 2004-01-21 Générateur de fréquence avec oscillateurs multiples commandé en tension
EP04250308.6 2004-01-21
US55309604P 2004-03-15 2004-03-15
US60/553,096 2004-03-15

Publications (2)

Publication Number Publication Date
WO2005071840A2 WO2005071840A2 (fr) 2005-08-04
WO2005071840A3 true WO2005071840A3 (fr) 2008-01-10

Family

ID=34809761

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/004923 WO2005071840A2 (fr) 2004-01-21 2004-11-23 Systemes de telecommunication

Country Status (3)

Country Link
JP (1) JP4625030B2 (fr)
KR (1) KR20060128933A (fr)
WO (1) WO2005071840A2 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10112575A1 (de) * 2001-03-15 2002-10-02 Siemens Ag Verfahren und Vorrichtung zur Erzeugung von Mobilfunksignalen
US20020163391A1 (en) * 2001-03-01 2002-11-07 Peterzell Paul E. Local oscillator leakage control in direct conversion processes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0788237A4 (fr) * 1995-08-03 1998-11-25 Anritsu Corp Diviseur rationnel de frequences et synthetiseur de frequences employant ce diviseur de frequences
JPH10242854A (ja) * 1997-02-27 1998-09-11 Oki Electric Ind Co Ltd 周波数シンセサイザ回路
US6047029A (en) * 1997-09-16 2000-04-04 Telefonaktiebolaget Lm Ericsson Post-filtered delta sigma for controlling a phase locked loop modulator
JP2001332971A (ja) * 2000-05-19 2001-11-30 Matsushita Electric Ind Co Ltd Ｐｌｌ周波数シンセサイザ
JP2003091328A (ja) * 2001-09-19 2003-03-28 Alps Electric Co Ltd コンピュータ

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020163391A1 (en) * 2001-03-01 2002-11-07 Peterzell Paul E. Local oscillator leakage control in direct conversion processes
DE10112575A1 (de) * 2001-03-15 2002-10-02 Siemens Ag Verfahren und Vorrichtung zur Erzeugung von Mobilfunksignalen

Also Published As

Publication number Publication date
WO2005071840A2 (fr) 2005-08-04
KR20060128933A (ko) 2006-12-14
JP2007538418A (ja) 2007-12-27
JP4625030B2 (ja) 2011-02-02

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