JPS5942623U - voltage controlled crystal oscillator - Google Patents
voltage controlled crystal oscillatorInfo
- Publication number
- JPS5942623U JPS5942623U JP13663182U JP13663182U JPS5942623U JP S5942623 U JPS5942623 U JP S5942623U JP 13663182 U JP13663182 U JP 13663182U JP 13663182 U JP13663182 U JP 13663182U JP S5942623 U JPS5942623 U JP S5942623U
- Authority
- JP
- Japan
- Prior art keywords
- voltage controlled
- crystal oscillator
- crystal
- controlled crystal
- series
- 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
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は水晶の簡単化等化回路を示す図、第２図は水晶
の周波数特性を示す図、第３図は水晶と可変インダクタ
ンスとを直列に接続した回路を示す図、第４図はその周
波数特性を示す図、第５図は水晶と可変キャバスタンス
とを直列に接続した回路を示す図、第６図はその周波数
特性を示す図、第７図は同調周波数可変素子の構成図、
第８図は従来の電圧制御水晶発振器（ｖｃｘｏ）の構成
図、第９図は温度変化によるｖｃｘｏの発振周波数偏差
を示す図、第１０図は本考案の一実施例の構成図である
。
Ｒｘ・・・・・・水晶の直列抵抗、Ｌｘ・・・・・・水
晶の等価イ 、ンダクタンス、ＣＸ・・・・・・水晶の
等価容量、ｃｏ・・曲水晶の電極間容量、Ｌｖ・・・・
・・可変インダクタンス、Ｃｖ・・・・・・可変容量ダ
イオード、Ｘｌ・・・・・・水晶振動子、Ｒ１，Ｒ２，
Ｒ３，Ｒ４，Ｒ１，、Ｒ１２，Ｒ１３，Ｒ１４，Ｒ１５
，Ｒ□６゜Ｒ１７・・・・・・抵抗、・Ｒｐ・・・・・
・正の温度度係数を有する抵抗、Ｃ１，Ｃ２，Ｃ１１，
Ｃ１２，Ｃ１３−−−−−−コンデンサ、Ｑｌ ＋Ｑ１
□・・・・・・トランジスタ、ＩＣ１・・・・・・２人
カナンドゲート、１・・・・・・制御電圧入力端子、２
・・−−−−ＶＣＸＯの出力端子、３・・・・・・電源
端子。Figure 1 is a diagram showing a simplified equalization circuit for a crystal, Figure 2 is a diagram showing frequency characteristics of a crystal, Figure 3 is a diagram showing a circuit in which a crystal and a variable inductance are connected in series, and Figure 4 is a diagram showing a circuit in which a crystal and a variable inductance are connected in series. A diagram showing its frequency characteristics, FIG. 5 is a diagram showing a circuit in which a crystal and a variable cavastance are connected in series, FIG. 6 is a diagram showing its frequency characteristics, and FIG. 7 is a configuration diagram of a tuned frequency variable element.
FIG. 8 is a block diagram of a conventional voltage controlled crystal oscillator (VCXO), FIG. 9 is a diagram showing the oscillation frequency deviation of the VCXO due to temperature changes, and FIG. 10 is a block diagram of an embodiment of the present invention. Rx...Series resistance of crystal, Lx...Equivalent inductance of crystal, CX...Equivalent capacitance of crystal, co...Capacitance between electrodes of bent crystal, Lv. ...
...Variable inductance, Cv...Variable capacitance diode, Xl...Crystal resonator, R1, R2,
R3, R4, R1,, R12, R13, R14, R15
, R□6゜R17...Resistance, ・Rp...
・Resistors with positive temperature coefficient, C1, C2, C11,
C12, C13---Capacitor, Ql +Q1
□...Transistor, IC1...2 canand gate, 1...Control voltage input terminal, 2
...---VCXO output terminal, 3...Power supply terminal.
Claims (1)
圧制御水晶発振器において、前記水晶振動子と直列に温
度補償用の温度係数抵抗器を接続したことを特徴とする
電圧制御水晶発振器。1. A voltage controlled crystal oscillator in which a variable capacitance diode is connected in series to a crystal resonator, characterized in that a temperature coefficient resistor for temperature compensation is connected in series with the crystal resonator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13663182U JPS5942623U (en) | 1982-09-10 | 1982-09-10 | voltage controlled crystal oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13663182U JPS5942623U (en) | 1982-09-10 | 1982-09-10 | voltage controlled crystal oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5942623U true JPS5942623U (en) | 1984-03-19 |
Family
ID=30307143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13663182U Pending JPS5942623U (en) | 1982-09-10 | 1982-09-10 | voltage controlled crystal oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5942623U (en) |
-
1982
- 1982-09-10 JP JP13663182U patent/JPS5942623U/en active Pending
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