JPH05284011A - Temperature compensating oscillator - Google Patents
Temperature compensating oscillatorInfo
- Publication number
- JPH05284011A JPH05284011A JP436392A JP436392A JPH05284011A JP H05284011 A JPH05284011 A JP H05284011A JP 436392 A JP436392 A JP 436392A JP 436392 A JP436392 A JP 436392A JP H05284011 A JPH05284011 A JP H05284011A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- voltage
- output
- controlled oscillator
- oscillator
- 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- Withdrawn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
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は温度補正型発振器に関
し、特に通信機，計測器などに内蔵され、使用温度変化
が激しい状態下で常に出力周波数が一定となるように温
度補償する小型な電圧制御型の温度補償型発振器に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature-corrected oscillator, and in particular, it is incorporated in a communication device, a measuring instrument, etc., and is a small voltage for temperature compensation so that the output frequency is always constant under a condition where the operating temperature changes greatly. The present invention relates to a controlled temperature compensated oscillator.
【０００２】[0002]
【従来の技術】従来、この種の温度補償発振器は、発振
子と直列に接続した電圧制御可変容量ダイオードに、サ
ーミスタと抵抗回路網から電圧を供給し、温度に対応し
て共振子の負荷容量を変化させて周波数の温度特性を補
償する方式となっていた。2. Description of the Related Art Conventionally, this type of temperature-compensated oscillator supplies voltage from a thermistor and a resistor network to a voltage-controlled variable capacitance diode connected in series with an oscillator, and the load capacitance of the resonator corresponding to the temperature. Was used to compensate for the temperature characteristic of the frequency.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来の温度補
償型発振器は、発振器内の共振子に温度センサを取り付
けると共振子の動作性能に影響を及ぼすので、共振子と
温度センサとが離れて配置されているとともに、温度セ
ンサ自体にも熱時定数があるため、急激な温度変化があ
る場合には、共振子自身の温度と温度センサの示す温度
とが一致せず、温度変化による周波数変動を抑圧するの
に必要な発振器の制御電圧を正確に設定できないので、
急激な温度変化による周波数変動を抑圧できないという
欠点がる。In the conventional temperature-compensated oscillator described above, when the temperature sensor is attached to the resonator in the oscillator, the operating performance of the resonator is affected, so that the resonator and the temperature sensor are separated from each other. Since the temperature sensor itself has a thermal time constant because it is placed, when there is a sudden temperature change, the temperature of the resonator itself does not match the temperature indicated by the temperature sensor, and the frequency changes due to the temperature change. Since the control voltage of the oscillator required to suppress
There is a drawback that frequency fluctuations due to rapid temperature changes cannot be suppressed.
【０００４】本発明の目的は上述た欠点を除去し、急激
な温度変化に対する周波数変動を抑圧するできる温度補
償型発振器を提供することにある。An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a temperature-compensated oscillator capable of suppressing frequency fluctuation due to abrupt temperature change.
【０００５】[0005]
【課題を解決するための手段】本発明の温度補償型発振
器は、電圧制御発振器の出力を２つに分岐し、その１つ
を前記電圧制御発振器の出力とし、他を前記電圧制御発
振器の共振子の温度変化を含む出力周波数として出力
し、前記出力周波数に対応した前記共振子の温度を求め
て前記電圧制御発振器の出力周波数の温度変化を補正す
るように抑圧する手段を備えて構成される。In the temperature-compensated oscillator of the present invention, the output of the voltage-controlled oscillator is branched into two, one of which is the output of the voltage-controlled oscillator, and the other is the resonance of the voltage-controlled oscillator. The output frequency including the temperature change of the child, obtain the temperature of the resonator corresponding to the output frequency, and suppress the output frequency of the voltage controlled oscillator to correct the temperature change. .
【０００６】[0006]
【実施例】次に、図面を参照して本発明を説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to the drawings.
【０００７】図１は、本発明の一実施例の温度補償型発
振器のプロック図である。FIG. 1 is a block diagram of a temperature compensated oscillator according to an embodiment of the present invention.
【０００８】図１に示す実施例は電圧制御発振器１と、
電圧制御発振器１の出力を分岐出力するパワーデバイダ
２と、パワーデバイダ２の分岐出力の１つを受け、その
周波数を電圧に変換して出力する周波数一電圧変換回路
３と、周波数一電圧変換回路３の出力から電圧制御発振
器１の出力周波数の温度変化を補償するように制御する
制御電圧を発生する温度補償回路４とを備えて成る。The embodiment shown in FIG. 1 includes a voltage controlled oscillator 1,
A power divider 2 that branches and outputs the output of the voltage controlled oscillator 1, and a frequency-voltage converter circuit 3 that receives one of the branched outputs of the power divider 2, converts the frequency thereof into a voltage, and outputs the voltage, and a frequency-voltage converter circuit. And a temperature compensating circuit 4 for generating a control voltage for controlling the output frequency of the voltage controlled oscillator 1 so as to compensate for the temperature change of the output frequency.
【０００９】次に、本実施例の動作について説明する。Next, the operation of this embodiment will be described.
【００１０】電圧制御発振器１の出力をパワーデバイダ
２で分岐し、その１つを発振器出力とし他を電圧制御発
振器１の共振子の温度に対応する周波数をもつ出力周波
数として利用する。このことは、電圧制御発振器１の出
力の周波数が内蔵共振子の温度に依存して変換すること
にもとづくものである。The output of the voltage controlled oscillator 1 is branched by the power divider 2, one of which is used as an oscillator output and the other is used as an output frequency having a frequency corresponding to the temperature of the resonator of the voltage controlled oscillator 1. This is based on the conversion of the frequency of the output of the voltage controlled oscillator 1 depending on the temperature of the built-in resonator.
【００１１】パワーデバイダ２の出力周波数は、周波数
一電圧変換回路３で、電圧制御発振器１の共振子の温度
に対応した電圧値としての温度表示電圧に変換され温度
補償回路４に供給される。The output frequency of the power divider 2 is converted by the frequency-voltage conversion circuit 3 into a temperature display voltage as a voltage value corresponding to the temperature of the resonator of the voltage controlled oscillator 1 and supplied to the temperature compensation circuit 4.
【００１２】温度補償回路４は、入力した温度表示電圧
にもとづき、電圧制御発振器１の温度変化による出力周
波数変動を抑圧するための制御電圧を発生し、この制御
電圧が電圧制御発振器１の可変容量ダイオードに印加さ
れ、温度変化を補償する。The temperature compensating circuit 4 generates a control voltage for suppressing an output frequency fluctuation due to a temperature change of the voltage controlled oscillator 1 based on the inputted temperature display voltage, and this control voltage is a variable capacitance of the voltage controlled oscillator 1. Applied to the diode to compensate for temperature changes.
【００１３】このようにして、電圧制御発振器１の共振
子の温度の正確な把握にもとづいて、急激な温度変化に
よる出力周波数の変換にも迅速に対応して補償すること
ができる。In this way, based on the accurate grasp of the temperature of the resonator of the voltage controlled oscillator 1, the conversion of the output frequency due to the rapid temperature change can be swiftly compensated.
【００１４】[0014]
【発明の効果】以上説明したように本発明は、発振器の
出力周波数を発振器内の共振子の温度を知るデータとし
て利用し、共振子の温度を正確に検知することにより、
急激な温度変動による発振器の出力周波数変動を補償で
きる効果がある。As described above, according to the present invention, the output frequency of the oscillator is used as data for knowing the temperature of the resonator in the oscillator, and the temperature of the resonator is accurately detected.
This has the effect of compensating for output frequency fluctuations of the oscillator due to rapid temperature fluctuations.
【図１】本発明は一実施例の温度補償型発振器のブロッ
ク図である。FIG. 1 is a block diagram of a temperature-compensated oscillator according to an embodiment of the present invention.
１ 電圧制御発振器 ２ パワーデバイダ ３ 周波数−電圧変換回路 ４ 温度補償回路 1 voltage controlled oscillator 2 power divider 3 frequency-voltage conversion circuit 4 temperature compensation circuit
Claims (1)
その１つを前記電圧制御発振器の出力とし、他を前記電
圧制御発振器の共振子の温度変化を含む出力周波数とし
て出力し、前記出力周波数に対応した前記共振子の温度
を求めて前記電圧制御発振器の出力周波数の温度変化を
補正するように抑圧する手段を備えて成ることを特徴と
する温度補償型発振器。1. The output of the voltage controlled oscillator is branched into two,
One of the outputs is output from the voltage controlled oscillator, the other is output as an output frequency including a temperature change of the resonator of the voltage controlled oscillator, and the temperature of the resonator corresponding to the output frequency is obtained to obtain the voltage controlled oscillator. A temperature-compensated oscillator comprising means for suppressing so as to correct a temperature change of the output frequency of the temperature-compensated oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP436392A JPH05284011A (en) | 1992-01-14 | 1992-01-14 | Temperature compensating oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP436392A JPH05284011A (en) | 1992-01-14 | 1992-01-14 | Temperature compensating oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05284011A true JPH05284011A (en) | 1993-10-29 |
Family
ID=11582299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP436392A Withdrawn JPH05284011A (en) | 1992-01-14 | 1992-01-14 | Temperature compensating oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05284011A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015228551A (en) * | 2014-05-30 | 2015-12-17 | 新日本無線株式会社 | Surface acoustic wave oscillator |
-
1992
- 1992-01-14 JP JP436392A patent/JPH05284011A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015228551A (en) * | 2014-05-30 | 2015-12-17 | 新日本無線株式会社 | Surface acoustic wave oscillator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990408 |