JPH0485809U - - Google Patents
Info
- Publication number
- JPH0485809U JPH0485809U JP12596490U JP12596490U JPH0485809U JP H0485809 U JPH0485809 U JP H0485809U JP 12596490 U JP12596490 U JP 12596490U JP 12596490 U JP12596490 U JP 12596490U JP H0485809 U JPH0485809 U JP H0485809U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- variable capacitance
- controlled oscillator
- voltage
- applied voltage
- 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
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Description
第１図は本考案に係るＶＣＯのバイアス回路を
除く回路構成の一例を示す図、第２図は第１図の
等価回路を示す図、第３図は従来のＶＣＯのバイ
アス回路を除く回路構成の一例を示す図である。
１，１′……共振回路、Ｔｒ……トランジスタ
、Θ……共振器、Ｃ１〜Ｃ６，ＣＶ……容量、Ｌ
Ｒ……等価インダクタンス、ＲＳ，ＲＳ′……抵
抗、ＶＤ１，ＶＤ２……バラクタダイオード（可
変容量ダイオード）。
Fig. 1 is a diagram showing an example of the circuit configuration of the VCO according to the present invention excluding the bias circuit, Fig. 2 is a diagram showing the equivalent circuit of Fig. 1, and Fig. 3 is the circuit configuration of the conventional VCO excluding the bias circuit. It is a figure showing an example. 1, 1'...Resonance circuit, Tr...Transistor, Θ...Resonator, C1 to C6 , CV...Capacity, L
R...Equivalent inductance, RS, RS'...Resistance, VD1, VD2...Varactor diode (variable capacitance diode).
Claims (1)
路を有する共振回路を備え、該印加電圧を制御す
ることにより発振周波数が制御可能な電圧制御発
振器において、前記可変容量回路は少なくとも２
個の可変容量ダイオードの並列回路からなること
を特徴とする電圧制御発振器。 In a voltage controlled oscillator comprising a resonant circuit having a variable capacitance circuit whose capacitance value can be changed by an applied voltage, and whose oscillation frequency can be controlled by controlling the applied voltage, the variable capacitance circuit has at least two
A voltage controlled oscillator comprising a parallel circuit of variable capacitance diodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12596490U JPH0485809U (en) | 1990-11-27 | 1990-11-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12596490U JPH0485809U (en) | 1990-11-27 | 1990-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0485809U true JPH0485809U (en) | 1992-07-27 |
Family
ID=31873542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12596490U Pending JPH0485809U (en) | 1990-11-27 | 1990-11-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0485809U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01280903A (en) * | 1988-05-06 | 1989-11-13 | Nec Corp | Frequency variable tuning circuit |
-
1990
- 1990-11-27 JP JP12596490U patent/JPH0485809U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01280903A (en) * | 1988-05-06 | 1989-11-13 | Nec Corp | Frequency variable tuning circuit |