DE10313757A1 - Frequency parameterization method for oscillator output signals using voltage-controlled capacitance, by changing pulse width ratio to equalize oscillator output, and storing required ratio - Google Patents
Frequency parameterization method for oscillator output signals using voltage-controlled capacitance, by changing pulse width ratio to equalize oscillator output, and storing required ratio Download PDFInfo
- Publication number
- DE10313757A1 DE10313757A1 DE2003113757 DE10313757A DE10313757A1 DE 10313757 A1 DE10313757 A1 DE 10313757A1 DE 2003113757 DE2003113757 DE 2003113757 DE 10313757 A DE10313757 A DE 10313757A DE 10313757 A1 DE10313757 A1 DE 10313757A1
- Authority
- DE
- Germany
- Prior art keywords
- oscillator
- oscillator output
- voltage
- frequency
- pulse width
- 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
Links
- 238000000034 method Methods 0.000 title claims description 11
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000011990 functional testing Methods 0.000 claims description 3
- 239000010453 quartz Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/02—Details
- H03B5/04—Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
- H03B5/366—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device and comprising means for varying the frequency by a variable voltage or current
- H03B5/368—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device and comprising means for varying the frequency by a variable voltage or current the means being voltage variable capacitance diodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
- H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
- H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
- H03L1/023—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using voltage variable capacitance diodes
- H03L1/025—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using voltage variable capacitance diodes and a memory for digitally storing correction values
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/006—Functional aspects of oscillators
- H03B2200/0068—Frequency or FM detection
Abstract
Description
Die Erfindung betrifft den Ausgleich von Bauelementetoleranzen für die Einstellung von Oszillatoren auf die von Transmittern, Transceivern oder anderen HF-Baugruppen benötigte Eingangsfrequenz.The The invention relates to the compensation of component tolerances for the setting from oscillators to those from transmitters, transceivers or others RF modules required Input frequency.
Viele
HF-Baugruppen sind mit einem festen Teilerverhältnis zur Erzeugung der Endfrequenz
ausgestattet. Das hat den Nachteil, dass sich Herstellungstoleranzen
der Schaltung selbst sowie des Oszillators und passiver Bauelemente
direkt auf die Ausgangsfrequenz auswirken. Das Problem kann zum
einen durch den Einsatz von Kompensationsbauelementen wie etwa Kondensatoren
während
der Serienproduktion gelöst
werden, wobei deren Bemessung aufgrund der Stückzahlen jeweils chargenweise
erfolgen muss, so dass dennoch ein relativ hoher Ausschussanteil
unvermeidbar bleibt. Eine zweite bekannte Methode besteht in der
Verwendung von einstellbaren Kompensationsbauelementen wie beispielsweise
Trimmern. Doch auch diese Lösungsweise
ist sehr aufwendig und insbesondere für schmalbandige Anwendungen
wegen ihrer Ungenauigkeit kaum geeignet. Aus der
Es ist daher Aufgabe der Erfindung, durch Bauelementetoleranzen hervorgerufene Abweichungen der Ausgangsfrequenz von Oszillatoren verzögerungsfrei auszugleichen.It is therefore the object of the invention, caused by component tolerances Output frequency deviations from oscillators are instantaneous compensate.
Die Aufgabe wird gelöst durch ein Verfahren zur Frequenzparametrierung von Oszillatorausgangssignalen mittels einer spannungsgesteuerten veränderbaren Kapazität mit den Merkmalen des Hauptanspruchs sowie einer Schaltungsanordnung zur Durchführung des Verfahrens entsprechend der Unteransprüche.The Task is solved by a method for frequency parameterization of oscillator output signals by means of a voltage-controlled variable capacity with the Features of the main claim and a circuit arrangement for execution of the method according to the subclaims.
Während der Funktionsprüfung des Oszillators wird an die veränderbare Kapazität eine Steuergleichspannung angelegt, die aus einer von einem unabhängigen Taktgeber erzeugten pulsweitenmodulierten Impulsfolge gewonnen wird. Dabei wird mittels Veränderung des Pulsweitenverhältnisses der Impulsfolge eine den Abgleich der Oszillatorausgangsfrequenz bewirkende Steuergleichspannung bestimmt. Das Pulsweitenverhältnis, das die zum Abgleich der Frequenz des Oszillatorausgangssignals erforderliche Steuergleichspannung widerspiegelt, wird dauerhaft gespeichert. Bei jeder Aktivierung des Oszillators wird der unabhängige Taktgeber gestartet, das gespeicherte Pulsweitenverhältnis aufgerufen und die Ausgangsimpulsfolge des unabhängigen Taktgebers entsprechend geformt, so dass mittels der aus der Impulsfolge abgeleiteten Steuergleichspannung die veränderbare Kapazität verstimmt und damit die Oszillatorausgangsfrequenz abgeglichen wird.During the functional test the oscillator becomes changeable capacity a DC control voltage is applied from an independent clock generator generated pulse width modulated pulse sequence is obtained. there is through change the pulse width ratio the pulse sequence is the adjustment of the oscillator output frequency effective DC control voltage determined. The pulse width ratio that the necessary to adjust the frequency of the oscillator output signal Control DC voltage is permanently saved. Each time the oscillator is activated, the independent clock is activated started, the saved pulse width ratio called and the output pulse train of the independent clock shaped accordingly so that by means of those derived from the pulse train DC control voltage the changeable capacity detuned and thus the oscillator output frequency is adjusted.
Ein Ausgang eines Oszillators ist mit einem Steuerfrequenzeingang einer das Oszillatorausgangssignal verwendenden Schaltung verbunden und eine spannungsgesteuerte veränderbare Kapazität ist dem Oszillator vorgeschaltet. Ein externer Taktgeber ist über Datenleitungen mit einem nichtflüchtigen Speicher verbunden. An den externen Taktgeber ist ausgangsseitig über eine Tiefpassschaltung die spannungsgesteuerte Kapazität angeschlossen. Der nichtflüchtige Speicher ist wenigstens einmal elektrisch beschreibbar ausgebildet. Eine erste vorteilhafte Ausbildung der Erfindung besteht darin, dass der Taktgeber ein Mikrocontroller ist. Eine weitere vorteilhafte Ausbildung erfährt die Erfindung, indem der nichtflüchtige Spei cher ein Bestandteil des Taktgebers ist. Weitergebildet wird die Erfindung dadurch, dass wenigstens eine Funktionseinheit als integrierter Schaltkreis ausgebildet ist oder dass wenigstens zwei Funktionseinheiten einen integrierten Schaltkreis bilden.An output of an oscillator is connected to a control frequency input of a circuit using the oscillator output signal and a voltage-controlled variable capacitance is connected upstream of the oscillator. An external clock is connected to a non-volatile memory via data lines. To the external The voltage-controlled capacitance is connected on the output side via a low-pass circuit. The non-volatile memory is designed to be electrically writable at least once. A first advantageous embodiment of the invention is that the clock is a microcontroller. A further advantageous embodiment of the invention is experienced in that the non-volatile memory is part of the clock. The invention is further developed in that at least one functional unit is designed as an integrated circuit or that at least two functional units form an integrated circuit.
Die Lösung nach der Erfindung zeichnet sich durch hohe Genauigkeit und sichere Wiederholbarkeit bei geringem Aufwand aus. Dadurch ist eine exemplarische Anwendung zum Ausgleich von Bauelementetoleranzen gegeben. Die erfindungsgemäße Lösung ist insbesondere für Schmalbandanwendungen geeignet. Die feste Vorgabe der Steuergleichspannung für die veränderbare Kapazität bedingt bei jeder Aktivierung des Oszillators einen stabilen Ausgleich von Bauelementetoleranzen und damit eine konstante Ausgangssignalfrequenz. Die Erfindung kann darüber hinaus durch Implementierung einer geeigneten, dem Fachmann geläufigen Schaltung ergänzt werden, die den Einfluss von Betriebsspannungsänderungen auf die pulsweitenmodulierte Impulsfolge und damit die Steuergleichspannung für die veränderbare Kapazität verhindert.The solution according to the invention is characterized by high accuracy and safe Repeatability with little effort. This is exemplary Use to compensate for component tolerances. The solution according to the invention is especially for Suitable for narrow band applications. The fixed specification of the DC control voltage for the changeable capacity requires stable compensation each time the oscillator is activated component tolerances and thus a constant output signal frequency. The invention can also furthermore by implementing a suitable circuit familiar to the person skilled in the art added be the influence of changes in operating voltage on the pulse width modulated Pulse train and thus the control DC voltage for the variable capacity prevented.
Nachfolgend
wird die Erfindung in Form eines bevorzugten Ausführungsbeispiels
einer erfindungsgemäßen Schaltungsanordnung
anhand der Zeichnung näher
erläutert.
Die Zeichnung zeigt
ein Blockschaltschema einer erfindungsgemäßen Schaltungsanordnung.The invention is explained in more detail below in the form of a preferred exemplary embodiment of a circuit arrangement according to the invention with reference to the drawing. The drawing shows
a block circuit diagram of a circuit arrangement according to the invention.
Die
einzige Figur der Zeichnung zeigt einen durch einen Schwingquarz
symbolisierten Oszillator
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003113757 DE10313757A1 (en) | 2003-03-27 | 2003-03-27 | Frequency parameterization method for oscillator output signals using voltage-controlled capacitance, by changing pulse width ratio to equalize oscillator output, and storing required ratio |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003113757 DE10313757A1 (en) | 2003-03-27 | 2003-03-27 | Frequency parameterization method for oscillator output signals using voltage-controlled capacitance, by changing pulse width ratio to equalize oscillator output, and storing required ratio |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10313757A1 true DE10313757A1 (en) | 2004-10-28 |
Family
ID=33038781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003113757 Ceased DE10313757A1 (en) | 2003-03-27 | 2003-03-27 | Frequency parameterization method for oscillator output signals using voltage-controlled capacitance, by changing pulse width ratio to equalize oscillator output, and storing required ratio |
Country Status (1)
Country | Link |
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DE (1) | DE10313757A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4011839C2 (en) * | 1990-04-12 | 1999-02-25 | Thomson Brandt Gmbh | Circuit arrangement for the adjustment of HF filter circuits |
WO2001031774A1 (en) * | 1999-10-26 | 2001-05-03 | Analog Devices, Inc. | Apparatus and method for changing crystal oscillator frequency |
DE10104269A1 (en) * | 2001-01-31 | 2002-08-01 | Siemens Ag | Method and device for adjusting an oscillator to be attached to a printed circuit board |
DE4104040C2 (en) * | 1991-02-09 | 2002-08-14 | Thomson Brandt Gmbh | Method for balancing and operating a circuit arrangement and circuit arrangement for carrying out the method |
-
2003
- 2003-03-27 DE DE2003113757 patent/DE10313757A1/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4011839C2 (en) * | 1990-04-12 | 1999-02-25 | Thomson Brandt Gmbh | Circuit arrangement for the adjustment of HF filter circuits |
DE4104040C2 (en) * | 1991-02-09 | 2002-08-14 | Thomson Brandt Gmbh | Method for balancing and operating a circuit arrangement and circuit arrangement for carrying out the method |
WO2001031774A1 (en) * | 1999-10-26 | 2001-05-03 | Analog Devices, Inc. | Apparatus and method for changing crystal oscillator frequency |
DE10104269A1 (en) * | 2001-01-31 | 2002-08-01 | Siemens Ag | Method and device for adjusting an oscillator to be attached to a printed circuit board |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |