WO2000011925A3 - Schaltung zur frequenzaufbereitung und modulation und funkstation - Google Patents

Schaltung zur frequenzaufbereitung und modulation und funkstation Download PDF

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Publication number
WO2000011925A3
WO2000011925A3 PCT/DE1999/001940 DE9901940W WO0011925A3 WO 2000011925 A3 WO2000011925 A3 WO 2000011925A3 DE 9901940 W DE9901940 W DE 9901940W WO 0011925 A3 WO0011925 A3 WO 0011925A3
Authority
WO
WIPO (PCT)
Prior art keywords
vco
pll circuit
circuit
modulation
phase detector
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.)
Ceased
Application number
PCT/DE1999/001940
Other languages
English (en)
French (fr)
Other versions
WO2000011925A2 (de
Inventor
Ludwig Hofmann
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2000011925A2 publication Critical patent/WO2000011925A2/de
Anticipated expiration legal-status Critical
Publication of WO2000011925A3 publication Critical patent/WO2000011925A3/de
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0975—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation in the phase locked loop at components other than the divider, the voltage controlled oscillator or the reference clock
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0966—Modifications of modulator for regulating the mean frequency using a phase locked loop modulating the reference clock
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
    • H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

Die Erfindung bezieht, sich auf eine Schaltung zur Frequenzaufbereitung, Modulation und AFC, wobei diese Funktionen digital ausgeführt werden sollen. Grundlegende Überlegung der vorliegenden Erfindung ist es dabei, die Funktionen Kanaleinstellung (über einen großen Frequenzbereich) und Modulation (relativ geringer Frequenzbereich) aufzuteilen. Erfindungsgemäß ist dazu eine Schaltung mit einem Referenzoszillator (1) und einer ersten PLL-Schaltung (2) mit einem ersten VCO (4) vorgesehen. Die erste PLL-Schaltung (2) ist mit dem Referenzoszillator (1) verbunden und dient zur Frequenzkanaleinstellung durch Verstimmung des ersten VCO (4). Eine zweite PLL-Schaltung (2) ist vorgesehen, die einen feinverstimmbaren zweiten VCO (5) aufweist, wobei die zweite PLL-Schaltung (3) ebenfalls mit dem Referenzoszillator verbunden ist. Der zweiten PLL-Schaltung (3) werden aufzumodulierende Daten zugeführt, die diese durch Feinverstimmung des zweiten VCO (5) auf eine feste Trägerfrequenz moduliert. Weiterhin ist eine Phasendetektorschleife (6, 7, 8) mit einem dritten VCO (6) und einem Phasendetektor (8) vorgesehen, wobei dem Phasendetektor (8) einerseits ein moduliertes Signal basierend auf dem Ausgangssignal des zweiten VCO (5) und andererseits ein Mischsignal des Ausgangssignals des ersten VCO (4) und des dritten VCO (6) zugeführt werden.
PCT/DE1999/001940 1998-08-27 1999-07-01 Schaltung zur frequenzaufbereitung und modulation und funkstation Ceased WO2000011925A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19839097.1 1998-08-27
DE19839097 1998-08-27

Publications (2)

Publication Number Publication Date
WO2000011925A2 WO2000011925A2 (de) 2000-03-09
WO2000011925A3 true WO2000011925A3 (de) 2002-10-03

Family

ID=7878972

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1999/001940 Ceased WO2000011925A2 (de) 1998-08-27 1999-07-01 Schaltung zur frequenzaufbereitung und modulation und funkstation

Country Status (1)

Country Link
WO (1) WO2000011925A2 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005952A1 (de) * 1979-02-26 1980-09-04 Radiometer Electronics As Frequenzmodulierbarer, als synthesizer ausgebildeter signalgenerator
US5216389A (en) * 1992-01-31 1993-06-01 Motorola, Inc. Temperature compensation of a crystal reference using direct digital synthesis
DE4320087C1 (de) * 1993-06-17 1994-08-18 Katek Kabel Kommunikations Anl Steuergenerator mit Phasenregelschleife
WO1996023366A1 (en) * 1995-01-24 1996-08-01 Nokia Mobile Phones Ltd. A method and circuit for creating a modulated signal in a transceiver
EP0746114A1 (de) * 1995-05-31 1996-12-04 Matra Communication Frequenzmodulierter Funksender
WO1999014849A1 (de) * 1997-09-12 1999-03-25 Siemens Aktiengesellschaft Schaltung zum erzeugen eines modulierten signals

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005952A1 (de) * 1979-02-26 1980-09-04 Radiometer Electronics As Frequenzmodulierbarer, als synthesizer ausgebildeter signalgenerator
US5216389A (en) * 1992-01-31 1993-06-01 Motorola, Inc. Temperature compensation of a crystal reference using direct digital synthesis
DE4320087C1 (de) * 1993-06-17 1994-08-18 Katek Kabel Kommunikations Anl Steuergenerator mit Phasenregelschleife
WO1996023366A1 (en) * 1995-01-24 1996-08-01 Nokia Mobile Phones Ltd. A method and circuit for creating a modulated signal in a transceiver
EP0746114A1 (de) * 1995-05-31 1996-12-04 Matra Communication Frequenzmodulierter Funksender
WO1999014849A1 (de) * 1997-09-12 1999-03-25 Siemens Aktiengesellschaft Schaltung zum erzeugen eines modulierten signals

Also Published As

Publication number Publication date
WO2000011925A2 (de) 2000-03-09

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