DE3339870A1 - Arrangement for compensating for the thermal drift in microwave oscillators - Google Patents
Arrangement for compensating for the thermal drift in microwave oscillatorsInfo
- Publication number
- DE3339870A1 DE3339870A1 DE19833339870 DE3339870A DE3339870A1 DE 3339870 A1 DE3339870 A1 DE 3339870A1 DE 19833339870 DE19833339870 DE 19833339870 DE 3339870 A DE3339870 A DE 3339870A DE 3339870 A1 DE3339870 A1 DE 3339870A1
- Authority
- DE
- Germany
- Prior art keywords
- oscillator
- memory
- parameters
- arrangement
- arrangement according
- 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.)
- Withdrawn
Links
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- 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
- H03B9/00—Generation of oscillations using transit-time effects
- H03B9/12—Generation of oscillations using transit-time effects using solid state devices, e.g. Gunn-effect devices
- H03B2009/126—Generation of oscillations using transit-time effects using solid state devices, e.g. Gunn-effect devices using impact ionization avalanche transit time [IMPATT] diodes
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
Description
Anordnung zur Kompensation der thermischen Drift vonArrangement to compensate the thermal drift of
Mikrowellenoszillatoren Die Erfindung betrifft eine Anordnung nach dem Oberbegriff des Anspruchs 1.Microwave oscillators The invention relates to an arrangement according to the preamble of claim 1.
Für Radar- und Kommunikationssysteme aller Art muß die Frequenzstabilität der verwendeten Oszillatoren einen höheren Wert aufweisen, als mit freischwingenden Gunn- und Impattoszillatoren erreichbar ist. Die nach dem Stand der Technik oft verwendete mechanisch-thermische Kompensation der Frequenzdrift beinhaltet einen hohen mechanischen Aufwand und hat demnach einen hohen Preis für die Oszillatoren zur Folge; außerdem ist die Einstellung der richtigen Kompensation meist langwierig. Weiter sind Stabilisierungsschaltungen mit Phasenregelschleifen bekannt.For radar and communication systems of all kinds, the frequency stability must of the oscillators used have a higher value than with free-running oscillators Gunn and Impatto oscillators. Often according to the state of the art The mechanical-thermal compensation used for the frequency drift includes a high mechanical effort and therefore has a high price for the oscillators result; in addition, setting the correct compensation is usually tedious. Stabilization circuits with phase locked loops are also known.
Diese erlauben zwar beliebig hohe Stabilitäten; der Schaltungsaufwand ist jedoch erheblich, so daß diese Schaltungen für einfache, billige Geräte ausscheiden.These allow any level of stability; the circuit effort however, is significant, so that these circuits are ruled out for simple, inexpensive devices.
Der Erfindung liegt die Aufgabe zugrunde, eine einfache, preiswerte Stabilisierung von Gunn- und Impattoszillatoren zu ermöglichen.The invention is based on the object of a simple, inexpensive To enable stabilization of Gunn and Impatto oscillators.
Die Erfindung ist im Patentanspruch 1 gekennzeichnet. Die weiteren Ansprüche beinhalten vorteilhafte Weiterbildungen bzw. Ausbildungen der Erfindung.The invention is characterized in claim 1. The others Claims contain advantageous developments or developments of the invention.
Die Erfindung wird im folgenden anhand der Figuren näher erläutert.The invention is explained in more detail below with reference to the figures.
FIG. 1 zeigt ein Blockschaltbild einer Ausführung der Erfindung. Die Temperatur des Oszillators 1 wird zu jeder Zeit mit einem elektronischen Thermometer 2 gemessen und in eine Spannung umgewandelt. Diese wird digitalisiert, 3, das Digitalsignal dient als Adresse für ein PROM 4. In diesem ist als digitales Wort der Wert der Betriebsspannung gespeichert, der bei der jeweiligen Temperatur ß die Sollfrequenz des Oszillators 1 ergibt. Der aus dem PROM ausgelesene Wert wird in eine analoge Spannung umgewandelt, 5, über welche die Betriebsspannung 6 des Oszillators 1 nachgeregelt wird. Somit wird in einem weiten Temperaturbereich die Betriebsspannung des Oszillators so nachgestimmt, daß dessen Betriebsfrequenz konstant bleibt.FIG. 1 shows a block diagram of an embodiment of the invention. the Temperature of the oscillator 1 is measured at all times with an electronic thermometer 2 measured and converted into a voltage. This is digitized, 3, the digital signal serves as the address for a PROM 4. The digital word in this is the value of Operating voltage stored, which at the respective temperature ß the setpoint frequency of the oscillator 1 results. The value read from the PROM is converted into an analog Voltage converted, 5, via which the operating voltage 6 of the oscillator 1 is readjusted will. The operating voltage of the oscillator is thus in a wide temperature range tuned so that its operating frequency remains constant.
Anstelle der Nachregelung der Betriebsspannung kann die Frequenz des Oszillators auch mit Hilfe einer Varaktordiode oder bei Impattoszillatoren über den Betriebsstrom nachgeregelt werden.Instead of readjusting the operating voltage, the frequency of the Oscillator also with the help of a varactor diode or Impattoszillatoren via the operating current can be readjusted.
Die erfindungsgemäße Anordnung eignet sich besonders gut für den automatischen Abgleich von Oszillatoren. Während einer Temperaturfahrt wird die Oszillatorfrequenz bei jeder Temperatur mit einer Hilfsschaltung auf Sollfrequenz nachgeregelt. Das dazu nötige Digitalwort wird jeweils gespeichert. Nach Beendigung der Temperaturfahrt müssen die gespeicherten Werte nur noch in das PROM übertragen werden.The arrangement according to the invention is particularly suitable for the automatic Adjustment of oscillators. During a temperature run, the oscillator frequency is at every temperature is readjusted to the setpoint frequency with an auxiliary circuit. The digital word required for this is stored in each case. After the end of the temperature run the saved values only have to be transferred to the PROM.
Eine vorteilhafte Anordnung für den Abgleich zeigt FIG. 2.An advantageous arrangement for the adjustment is shown in FIG. 2.
Anstelle des PROMs 4 ist eine Regelschleife und ein Drucker mit Lochstreifenstanzer in die Kompensationsanordnung eingefügt. Während der Temperaturfahrt gibt der A/D-Wandler 3 ständig digitalisierte Temperaturwerte an den Drucker ab. Das Ergebnis des Soll-Ist-Vergleichs der Oszillatorfrequenz wird mit einem Vor-Rück-Zähler in das Digitalwort umgesetzt, welches die passende kompensierte Betriebsspannung erzeugt. Das Digitalwort wird zum einen in der Regelschleife an den D/A-Wandler 5 gegeben, zum anderen an den Drucker, welcher mit dem Stanzer Digitalwort und zugehörigen Temperaturwert in einen Programmierlochstreifen für das PROM 4 umsetzt.Instead of the PROM 4 there is a control loop and a printer with a tape punch inserted into the compensation arrangement. The A / D converter gives during the temperature run 3 continuously digitized temperature values are sent to the printer. The result of the target / actual comparison the oscillator frequency is converted into the digital word with a front-back counter, which generates the appropriate compensated operating voltage. The digital word will on the one hand in the control loop to the D / A converter 5, on the other hand to the Printer, which with the punch digital word and associated temperature value in a Programming punched strips for the PROM 4.
- Leerseite- Blank page
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833339870 DE3339870A1 (en) | 1983-11-04 | 1983-11-04 | Arrangement for compensating for the thermal drift in microwave oscillators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833339870 DE3339870A1 (en) | 1983-11-04 | 1983-11-04 | Arrangement for compensating for the thermal drift in microwave oscillators |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3339870A1 true DE3339870A1 (en) | 1985-05-15 |
Family
ID=6213425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19833339870 Withdrawn DE3339870A1 (en) | 1983-11-04 | 1983-11-04 | Arrangement for compensating for the thermal drift in microwave oscillators |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3339870A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2604575A1 (en) * | 1986-09-29 | 1988-04-01 | Sony Corp | FERROMAGNETIC RESONATOR HAVING TEMPERATURE COMPENSATION MEANS WHICH USES PRECODED COMPENSATION DATA |
-
1983
- 1983-11-04 DE DE19833339870 patent/DE3339870A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2604575A1 (en) * | 1986-09-29 | 1988-04-01 | Sony Corp | FERROMAGNETIC RESONATOR HAVING TEMPERATURE COMPENSATION MEANS WHICH USES PRECODED COMPENSATION DATA |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69031756T2 (en) | Variable frequency signal generator | |
DE3841512C2 (en) | ||
EP0608681B1 (en) | Oscillator circuit with a memory for memorising characteristic information individual to the quartz vibrator | |
DE2720432C3 (en) | Synchronizing signal generator | |
WO1984003184A1 (en) | Tuning unit for communication system | |
EP0974196B1 (en) | Afc-digital tuning through mutual digital synthesis | |
DE102007047263B4 (en) | System for generating a programmable tuning voltage | |
EP0119439B1 (en) | Diode mixer with bias control and its application | |
DE2854852A1 (en) | Electronic tuner for TV receiver - tunes both filter and oscillator using auxiliary oscillators and analogue memories | |
DE4013957A1 (en) | LINEARIZATION CIRCUIT ARRANGEMENT AND METHOD FOR A WOBBEL GENERATOR | |
DE2950625A1 (en) | TUNER | |
DE69121777T2 (en) | Digitally controlled oscillator | |
DE3339870A1 (en) | Arrangement for compensating for the thermal drift in microwave oscillators | |
DE4209843A1 (en) | Temp. compensated oscillator circuit - stores tuning element setting signal and corresponding temp. signal during calibration phase for subsequent provision of correction signal | |
EP0429859A2 (en) | Frequency generator, which can be digitally frequency modulated | |
EP0834994B1 (en) | Circuit arrangement comprising an oscillator | |
DE3707839A1 (en) | ELECTRONIC TUNING DEVICE | |
DE3114037C2 (en) | Voting system | |
DE19939036C2 (en) | Arrangement for sweeping a frequency synthesizer | |
EP0182982A1 (en) | Oscillator circuit | |
DE4415169A1 (en) | PLL circuit using two=stage control signal | |
EP0117499B1 (en) | Circuit arrangement for measuring and detecting a maximum voltage output | |
DE2758951A1 (en) | Receiver for community antenna TV system - shares level and frequency control between all channels | |
DE4336655A1 (en) | Circuit arrangement for frequency multiplication | |
DE2940482C2 (en) | Adjustable frequency generator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |