JPH0425306U - - Google Patents
Info
- Publication number
- JPH0425306U JPH0425306U JP6641090U JP6641090U JPH0425306U JP H0425306 U JPH0425306 U JP H0425306U JP 6641090 U JP6641090 U JP 6641090U JP 6641090 U JP6641090 U JP 6641090U JP H0425306 U JPH0425306 U JP H0425306U
- Authority
- JP
- Japan
- Prior art keywords
- variable capacitance
- variable
- capacitance diode
- resonant circuit
- circuit
- 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
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Description
第１図は本考案に係る電圧制御発振器の一実施
例を示す回路構成図、第２図は第１図装置の変形
例を示す部分回路図、第３図は従来の電圧制御発
振器を示す回路構成図、第４図は第３図の増幅器
１の動作特性を示す図、第５図は結合キヤパシタ
の位相特性を示す図、第６図は周波数を変化した
ときの動作特性を示す図である。
１０……増幅回路、Ｃ４……第１の可変容量ダ
イオード、Ｃ６，Ｃ７，Ｃ８……結合キヤパシタ
、ＶＣ……制御電圧、Ｃ７……第２の可変容量ダ
イオード。
FIG. 1 is a circuit configuration diagram showing an embodiment of the voltage controlled oscillator according to the present invention, FIG. 2 is a partial circuit diagram showing a modification of the device shown in FIG. 1, and FIG. 3 is a circuit showing a conventional voltage controlled oscillator. 4 is a diagram showing the operating characteristics of the amplifier 1 in FIG. 3, FIG. 5 is a diagram showing the phase characteristics of the coupling capacitor, and FIG. 6 is a diagram showing the operating characteristics when the frequency is changed. . 10...Amplification circuit, C4...First variable capacitance diode, C6 , C7 , C8 ...Coupling capacitor, VC...Control voltage, C7 ...Second variable capacitance diode.
Claims (1)
て共振周波数可変としたＬＣ共振回路と、前記増
幅回路と前記ＬＣ共振回路を接続して発振ループ
を形成する２つの結合キヤパシタとを備え、少な
くとも一方の結合キヤパシタに第２の可変容量ダ
イオードを使用し、制御電圧により第１、第２の
可変容量ダイオードの容量値を同時に変化するよ
うに構成したことを特徴とする電圧制御発振器。 an LC resonant circuit whose resonant frequency is variable using a first variable capacitance diode; and two coupling capacitors that connect the amplification circuit and the LC resonant circuit to form an oscillation loop, at least one of which A voltage controlled oscillator characterized in that a second variable capacitance diode is used as a coupling capacitor of the oscillator, and the capacitance values of the first and second variable capacitance diodes are changed simultaneously by a control voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6641090U JPH0425306U (en) | 1990-06-22 | 1990-06-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6641090U JPH0425306U (en) | 1990-06-22 | 1990-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0425306U true JPH0425306U (en) | 1992-02-28 |
Family
ID=31599104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6641090U Pending JPH0425306U (en) | 1990-06-22 | 1990-06-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0425306U (en) |
-
1990
- 1990-06-22 JP JP6641090U patent/JPH0425306U/ja active Pending