JPS59194519A - Method for generating reference frequency - Google Patents
Method for generating reference frequencyInfo
- Publication number
- JPS59194519A JPS59194519A JP6983083A JP6983083A JPS59194519A JP S59194519 A JPS59194519 A JP S59194519A JP 6983083 A JP6983083 A JP 6983083A JP 6983083 A JP6983083 A JP 6983083A JP S59194519 A JPS59194519 A JP S59194519A
- Authority
- JP
- Japan
- Prior art keywords
- ocxo
- output
- tcxo
- crystal oscillator
- switching
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 11
- 230000010355 oscillation Effects 0.000 claims abstract description 21
- 239000013078 crystal Substances 0.000 claims abstract description 20
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract 3
- 238000011105 stabilization Methods 0.000 abstract 3
- 230000004075 alteration Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000007704 transition Effects 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
- H03L1/027—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 frequency conversion means which is variable with temperature, e.g. mixer, frequency divider, pulse add/substract logic circuit
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明□周波数、／７ヤケイ”Ａ−１，、、＜り、ラエ
・アナライザ等に必要な低雑音イぎ号源全位相同期せし
める為の高精度かつ安り此の高い基準周波数源の周波数
発生方式に関する。[Detailed Description of the Invention] The present invention provides a high-accuracy and low-cost method for synchronizing all phases of a low-noise signal source necessary for a Rae analyzer, etc. This invention relates to a frequency generation method for a high reference frequency source.
従来、上述の目的の為には例えば水晶振動子を１ｕ温漕
に収納し、恒温槽の温度を充分精密に制御することによ
って１０−８乃至１Ｏ−９程度の発掘周波数精度を実現
する所謂ＯＣＸ ＯやこれよＶ梢仮的Ｇ′こはやＸ劣る
（１０−６程ｌ現）が恒温槽を必四としない温度補償回
路によって水晶奈動子の周波数一温度特性をキャンセル
する所謂“ｖＣＸＯ−（Ｔ？使用するのが一般的である
。Conventionally, for the above purpose, a so-called OCX was used, in which a crystal resonator was housed in a 1U temperature chamber, and by controlling the temperature of the constant temperature chamber sufficiently precisely, an excavation frequency accuracy of about 10-8 to 1O-9 was achieved. O, this, V, temporary G'Kohaya, -(T? is commonly used.
しかしながらｔ’４ｊＪ者ｏｃｘｏは前記４１１１度に
周波数が安定するまで３０乃至６０分もの時間を要する
し後者’ｒｃｘｏは電源投入と同時に前記精度の周波数
を得ることはできるものの１０−６以上の精度に周波数
を安定化することは実質的に不可う欠点があった。However, the t'4jJ ocxo takes 30 to 60 minutes to stabilize the frequency at 4111 degrees, and the latter'rcxo can obtain the frequency with the above accuracy as soon as the power is turned on, but the accuracy is higher than 10-6. There was a drawback that it was virtually impossible to stabilize the frequency.
本発明は従来から一般に用いられていた上記基準周波数
源の欠点に鑑みてなされたものであッテ、ＴＣＸＯ，！
：０ＣＸＯと２併設し先ずＴＣＸＯ２発振せしめｏｃｘ
ｏの発振周波数が充分安定した後発振回路への電力投入
’２ｉｔ’ＣＸＯから０ＣＸＯに切換えるか或は両者を
共に発振させておき０ＣＸＯの発振周波数が安定するま
ではＴＣＸＯ出カー２．０ＣＸＯの周波数が安定した後
はその出力全切換えて使用することによって待ち時間な
しにしかも使用期間の全体に亘って所望の精度の周波数
を得るようにした基準周波数発生方式全提供せんとする
ものである。The present invention has been made in view of the drawbacks of the above-mentioned reference frequency sources that have been commonly used in the past.
:0CXO and 2 are installed together, first TCXO2 oscillation ocx
After the oscillation frequency of o is sufficiently stabilized, power is turned on to the oscillation circuit. Switch from CXO to 0CXO, or let both oscillate together until the oscillation frequency of 0CXO becomes stable. It is an object of the present invention to provide a complete reference frequency generation system in which a frequency of desired precision can be obtained without waiting time and over the entire period of use by switching all of the outputs and using the system after the system has stabilized.
以下、本発明を図面に示す実施例によって詳細に１悦明
する。Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.
ｉ１７． ］図はｌ’ ＣＸ ＯとＯＣＸ Ｏの周波数
精度の時間的変化全定性的に示しブｔものであってＴ
ＣＸ Ｏは定するまではその出力全使用するに耐えない
が３０乃至６０分の後１０−８乃至１０−９程度の精度
にて発振が安定すること金が叩解されよう。i17. ] The figure qualitatively shows the temporal changes in the frequency accuracy of l' CX O and OCX O.
The CXO cannot withstand full use of its output until it is fixed, but after 30 to 60 minutes the oscillation will stabilize with an accuracy of about 10-8 to 10-9 and the gold will be beaten.
そこで、本発明に於いてはＯＣＸ Ｏの発振周波数が安
定する咬での間はＴＣＸＯの出力全使用し、（Ｊ ＣＸ
Ｏの周波数が安定した後は０ＣＸＯの出力を使用せん
とするものであるからその切換えは例えばＯＣＸ Ｏの
水晶振動子を収納した恒温槽の温度を検知しその出力に
依ればよい。即ち、第２図に示す如（ＴＣＸＯ，０ＣＸ
Ｏ両者に電源を投入し、その当初はＴ ＣＸ Ｏの出力
を使用し恒温槽の１ＡＡ Ｉ！−Ｕ ｌｉ’制御装置（
Ｊ Ｖ Ｅ Ｎ Ｃ０１’Ｊ Ｔ ｌ（、ＯＬの温度
センサの出力に適当なヌレショホールドを設けてその出
力によって切換えスイッチＳＷＩ ｋ動作せしめればよ
い。Therefore, in the present invention, the full output of the TCXO is used during the period when the oscillation frequency of the OCXO is stable.
Since the output of the 0CXO is not to be used after the frequency of the 0CXO becomes stable, the switching can be done by detecting the temperature of a constant temperature oven housing the crystal oscillator of the OCXO, for example, and depending on the output. That is, as shown in Figure 2 (TCXO, 0CX
Turn on the power to both O, and initially use the output of T CX O and 1AA I! of the constant temperature chamber. - U li' control device (
J V E N C01'J T l (, It is sufficient to provide an appropriate damping hold for the output of the OL temperature sensor and operate the changeover switch SWI k based on the output.
もっとも、第２図は本発明の基本的概念を示したものに
過ぎず斯る手法をそのまま現実の装置に適用する万らば
前記切換スイッチ８ Ｗからいずれか一方の出力が漏洩
しスプリアスの原因となる可能性がある。そこで現実の
回路構成としては第３図に示す如きが望ましい。However, FIG. 2 only shows the basic concept of the present invention, and if such a method were to be applied to an actual device, one of the outputs from the changeover switch 8W would leak, causing spurious signals. There is a possibility that Therefore, the actual circuit configuration shown in FIG. 3 is desirable.
即ち、恒温槽の温度制御部０ＶＥＮ ＣＯＮ’Ｌ”ｆ
ｌ・ＯＬの出力が所要の値となった時ｏｃｘｏの発振１
回路とその駆動電源との間に挿入した切換スイッチＳＷ
２ ＝を閉じて０ＣＸＯｉ発振せしめその出力信号上用
いて’ｒｃｘｏの発振回路とその駆動電源との間に挿入
した切換スイッチ８ Ｗ ３を開放する。斯くすること
によってｏｃｘｏの発Ｓ周波数が安定するまでの間は’
ｒｃｘｏのみを駆動し、０ＣＸＯの周波数が安定した後
はＴＣＸＯの駆動を停止しｏｃｘｏの出力だけを使用す
ることができる。In other words, the temperature control section 0VEN CON'L"f of the constant temperature oven
When the output of l・OL reaches the required value, ocxo oscillates 1
Selector switch SW inserted between the circuit and its drive power source
2 = is closed to cause the 0CXOi to oscillate, and the output signal is used to open the selector switch 8W3 inserted between the oscillation circuit of the 'rcxo and its drive power source. By doing this, until the OCXO's oscillation S frequency becomes stable, '
It is possible to drive only the rcxo and, after the frequency of the 0CXO becomes stable, stop driving the TCXO and use only the output of the ocxo.
商、このような装置に於いて発振回路ｇ’ｌ’ｃＸＯ，
０ＣＸＯ夫々に備えるのは無駄であるから第４図に示す
如く発振回路を共用としＴＣＸＯのｆｌｉＡ度補償回路
’［’ＥＭＰ、Ｃ０ＩＶＩＰＥＮＳＡＴＥとｉ温槽及び
その温度制御回路０Ｖｉ６Ｎ ＣＵＮＴＢ、ＯＬを夫
々の水晶振動子金塊に分離しておき切換スイッチ５Ｖ１
１４によって当初’ｔ’ｃｘｏを使用し恒温槽内の水晶
振動子温度が安定した後０ＣＸＯｉ使用するようにすれ
ば回路素子の節約と小型、低価格化が可能となる。もっ
ともこのような方式を用いるとｒｃＸＯからｏｃｘｏに
切俣えた時ＱＣＸＯが発振を開始するまで数秒間出力が
停市してし１うという問題があるが用途を選べば充分価
値のある方式であろう。In such a device, the oscillation circuit g'l'cXO,
Since it would be wasteful to prepare for each 0CXO, the oscillation circuit is shared as shown in Figure 4. Separate the vibrator gold bullion and select switch 5V1
14, by initially using 't'CXO and then using 0CXOi after the temperature of the crystal resonator in the thermostat stabilizes, it is possible to save circuit elements, make it smaller, and lower the cost. However, when using this method, there is a problem that when the transition from rcXO to OCXO occurs, the output is stopped for several seconds until the QCXO starts oscillating, but it is a method that is well worth the effort if you choose the application. Dew.
史に、詔５図に示す如＜ ’Ｌ″ＣＸＯをＰ Ｌ Ｌ回
路に挿入し０ＣＸＯの出力全切換スイッチＳＷＳを介し
て前記ＰＬＬ回１烙の入力に接続すれば０ＣＸ（Ｊの出
力によって゛ｔ’ｃ’ｘｏ出刃を安定化する効果がある
。Historically, as shown in Figure 5 of the Imperial Decree, if a CXO <'L'' is inserted into the PLL circuit and connected to the input of the PLL circuit 1 via the 0CXO's output all selector switch SWS, the output of 0CX (J) is It has the effect of stabilizing the cutting edge.
この・１才合、０ＣＸＯの出力が安定するまでの間は’
ｔ’ｃｘｏだけを使用し、０ＣＸＯ出カ安定後はこの出
力を前記切換スイッチＳＷ５によって前記ＰＬＬ回路の
入力側に接続すればよい。During this period of time, until the output of the 0CXO stabilizes,
Only t'cxo is used, and after the 0CXO output is stabilized, this output is connected to the input side of the PLL circuit by the changeover switch SW5.
本発明は以上説明した如く構成しかつ使用するものであ
るから電源投入と同時に高精度かつ安定度の高い周波数
を得るのみならず時間の経過と共に一層高精度かつ高安
定の周波数を出力するものであるから電源投入１ｉ塩精
度を必要とする周波数カウンタや周波数シンセサイザ戊
はスペクトラム・アナライザ等の低雑音信号源の位相同
期をとる為の基準周波数発生源に適用する上で極めて効
果的な方式である。Since the present invention is configured and used as described above, it not only obtains a highly accurate and highly stable frequency at the time the power is turned on, but also outputs an even more accurate and highly stable frequency as time passes. Frequency counters and frequency synthesizers that require high precision at power-on are extremely effective when applied to reference frequency sources for phase synchronization of low-noise signal sources such as spectrum analyzers. .
第１図はｒｃｘｏとｏｃｘｏとの発振周波数精度の時間
的変化全説明する図、第２図乃至第５図は夫々本発明に
係る基準周波数発生方式の異った実施例を示すブロック
図である。
Ｔ ＣＸ Ｏ・・・・・・・・・温度補償水晶発振器、
０ＣＸＯ・・・・・・・・・恒温槽によって水晶振動
子の特性を安定させる高安定水晶発振器、 ０ＶＥＮ
Ｃ０ＮＴｌ（・ＯＬ・・・・・・・・・恒温槽温度制
御装置、 ＰＤ／ＬＰＦ／ＴＣＸＯ・・・・・・・・Ｐ
ＬＬ回路８Ｗ１ 、 ＳＶｉ’２ 、 ＳＷ３ 、 Ｓ
Ｗ４及びＳＷ５・・・・・・・・・切換えスイッチ
特許出願人 東洋通信機株式会社
８FIG. 1 is a diagram explaining all the temporal changes in the oscillation frequency accuracy of RCXO and OCXO, and FIGS. 2 to 5 are block diagrams showing different embodiments of the reference frequency generation method according to the present invention. . T CX O・・・・・・Temperature compensated crystal oscillator,
0CXO・・・・・・Highly stable crystal oscillator that stabilizes the characteristics of the crystal resonator using a constant temperature bath, 0VEN
C0NTl(・OL・・・・・・・・・Thermostatic chamber temperature control device, PD/LPF/TCXO・・・・・・・・・P
LL circuit 8W1, SVi'2, SW3, S
W4 and SW5... Changeover switch patent applicant Toyo Tsushinki Co., Ltd. 8
Claims (5)
によって水晶振動子の特性を安定させる高安定水晶発振
器（ＯＣＸＯ）とを併設し、前記両発振器への電源投入
当初に於いては前記’ｒｃｘ。 の出力を使用すると共に前記ｕｃｘｏの発振周波数が安
定した後に於いては使用すべき出刃を前記’ｔ’ ｃ
ｘ ｏ出刃がら当該ｏｃｘｏ出カに出刃えることによっ
て電源投入当初から高精度かつ高安定の周波数を得るこ
と全特徴とする基準周波数発生方式。(1) Temperature compensated crystal oscillation! ('r CXO) and a highly stable crystal oscillator (OCXO) that stabilizes the characteristics of the crystal resonator using a constant temperature bath. After the oscillation frequency of the ucxo is stabilized, the blade to be used is determined by the 't' c
A reference frequency generation method characterized by obtaining a highly accurate and highly stable frequency from the time the power is turned on by applying the xo output to the ocxo output.
ｆｔｌ 記’［’ ＣＸＯ及びｉ％ｊＪ記Ｕ ＣＸ Ｏ
の恒温槽に対する電源投入後前記０ＣＸＯの水晶振動子
が所要の温度に安定するまでの間は前記ＴＣＸＯの出刃
を使用すると共に前記ｏｃｘｏの水晶振動子が所要温度
に３．・ドしたｎ ｉｉｌ記’Ｌ”ＣＸＯへｔＤ 投入
ＩＭ、 源ｋ 前Ｍｅ ０ＣＸ０に切換えてその出力を
使用することによって電源投入当初から高精度かつ高安
定の周波数を得るようにしたことを特徴とする基準周波
数発生方式。(2) 'l”cXo, !: attached to 0CXO, 1
ftl Note '[' CXO and i%jJ Note U CX O
3. After turning on the power to the thermostatic chamber, until the crystal oscillator of the 0CXO stabilizes at the required temperature, the blade of the TCXO is used and the crystal oscillator of the OCXO reaches the required temperature.・It is characterized by obtaining a highly accurate and highly stable frequency from the time the power is turned on by switching to IM, source k to Me 0CX0 and using its output. Standard frequency generation method.
用とし前記ｏｃｘｏの水晶振動子が所要温度に達した後
前記発振回路の接続をＴＣＸＯ水晶振動子の側からｏｃ
ｘｏ水晶振動子の側へ切換えることによって発振回路を
節約したことを特徴とする特許請求の範囲２記載の基準
周波数発生方式。(3) Single oscillation circuit f: TCXO and OCXO are shared, and after the OCXO crystal oscillator reaches the required temperature, the oscillation circuit is connected from the TCXO crystal oscillator side.
3. The reference frequency generation method according to claim 2, wherein the oscillation circuit is saved by switching to the xo crystal resonator side.
ＶｃＯｃＸＯ出力を前記ＰＬＬ回路入力にスイッチング
回路を介して接続し前記ｏｃｘｏの水晶振動子が所要の
温度に安定するまでの間は前記ＴＣＸＯの出力ｔ１又前
記ｏｃｘｏの水晶振動子が所要の温度に達した後は前記
スイッチング回路を接続して前記ＴＣＸＯの出力を前記
ｏｅｘｏの出力によって位相同期させるようにしたこと
を特徴とする基準周波数発生方式。(4) TCXOl (Incorporated in PLL circuit Wr, together with tr, connects the VcOcXO output to the PLL circuit input via a switching circuit, and outputs the TCXO until the crystal resonator of the OCXO stabilizes at the required temperature. t1 and after the crystal oscillator of the OCXO reaches a required temperature, the switching circuit is connected to phase-synchronize the output of the TCXO with the output of the OEXO.
切換え、ＴＣＸＯへの投入電源のｏｃｘｏへの切換え或
は前記発振回路、スイッチング回路等の切換え全前記Ｏ
ＣＸ Ｏの恒温槽温度制御信号によって行なうこと全特
徴とする特許請求の範囲１゜２．３ 又は４記載の基準
周波数発生方式。(5) Switching from the TCXO output to the 0CXO output, switching the power supply to the TCXO to OCXO, or switching the oscillation circuit, switching circuit, etc.
4. The reference frequency generation method according to claim 1.2.3 or 4, wherein all of the functions are performed using a constant temperature oven temperature control signal of the CXO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6983083A JPS59194519A (en) | 1983-04-19 | 1983-04-19 | Method for generating reference frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6983083A JPS59194519A (en) | 1983-04-19 | 1983-04-19 | Method for generating reference frequency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59194519A true JPS59194519A (en) | 1984-11-05 |
Family
ID=13414077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6983083A Pending JPS59194519A (en) | 1983-04-19 | 1983-04-19 | Method for generating reference frequency |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59194519A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0856120A (en) * | 1994-08-10 | 1996-02-27 | Yaesu Musen Co Ltd | Reference oscillator circuit |
| US6433309B2 (en) * | 2000-03-02 | 2002-08-13 | Nihon Dempa Kogyo Co., Ltd. | Oscillator that uses thermostatic oven |
| JP2006046121A (en) * | 2004-08-02 | 2006-02-16 | Toyota Motor Corp | Exhaust structure |
| JP2009124291A (en) * | 2007-11-13 | 2009-06-04 | Nippon Dempa Kogyo Co Ltd | Highly-stable oscillator with constant temperature oven |
| JP2011040850A (en) * | 2009-08-07 | 2011-02-24 | Nippon Dempa Kogyo Co Ltd | Frequency synthesizer |
| CN102208897A (en) * | 2010-03-31 | 2011-10-05 | 日本电波工业株式会社 | Reference signal oscillator |
| US8136627B2 (en) | 2007-09-06 | 2012-03-20 | Toyota Jidosha Kabushiki Kaisha | Exhaust silencer device for internal combustion engine |
| CN109347443A (en) * | 2018-12-25 | 2019-02-15 | 北京无线电计量测试研究所 | A kind of constant-temperature crystal oscillator and its working method |
| CN112422123A (en) * | 2020-11-24 | 2021-02-26 | 武汉滨湖电子有限责任公司 | Low-phase noise frequency synthesizer and local oscillator implementation method |
-
1983
- 1983-04-19 JP JP6983083A patent/JPS59194519A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0856120A (en) * | 1994-08-10 | 1996-02-27 | Yaesu Musen Co Ltd | Reference oscillator circuit |
| US6433309B2 (en) * | 2000-03-02 | 2002-08-13 | Nihon Dempa Kogyo Co., Ltd. | Oscillator that uses thermostatic oven |
| JP2006046121A (en) * | 2004-08-02 | 2006-02-16 | Toyota Motor Corp | Exhaust structure |
| US8136627B2 (en) | 2007-09-06 | 2012-03-20 | Toyota Jidosha Kabushiki Kaisha | Exhaust silencer device for internal combustion engine |
| JP2009124291A (en) * | 2007-11-13 | 2009-06-04 | Nippon Dempa Kogyo Co Ltd | Highly-stable oscillator with constant temperature oven |
| US8451029B2 (en) | 2009-08-07 | 2013-05-28 | Nihon Dempa Kogyo Co., Ltd. | Frequency synthesizer |
| JP2011040850A (en) * | 2009-08-07 | 2011-02-24 | Nippon Dempa Kogyo Co Ltd | Frequency synthesizer |
| TWI452843B (en) * | 2009-08-07 | 2014-09-11 | Nihon Dempa Kogyo Co | Frequency synthesizer |
| JP2011217135A (en) * | 2010-03-31 | 2011-10-27 | Nippon Dempa Kogyo Co Ltd | Reference signal oscillator |
| US8497740B2 (en) | 2010-03-31 | 2013-07-30 | Nihon Dempa Kogyo Co., Ltd. | Reference signal oscillator |
| CN102208897A (en) * | 2010-03-31 | 2011-10-05 | 日本电波工业株式会社 | Reference signal oscillator |
| CN109347443A (en) * | 2018-12-25 | 2019-02-15 | 北京无线电计量测试研究所 | A kind of constant-temperature crystal oscillator and its working method |
| CN112422123A (en) * | 2020-11-24 | 2021-02-26 | 武汉滨湖电子有限责任公司 | Low-phase noise frequency synthesizer and local oscillator implementation method |
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