JPS5590105A - High-frequency oscillation circuit - Google Patents
High-frequency oscillation circuitInfo
- Publication number
- JPS5590105A JPS5590105A JP16248878A JP16248878A JPS5590105A JP S5590105 A JPS5590105 A JP S5590105A JP 16248878 A JP16248878 A JP 16248878A JP 16248878 A JP16248878 A JP 16248878A JP S5590105 A JPS5590105 A JP S5590105A
- Authority
- JP
- Japan
- Prior art keywords
- diode
- frequency
- oscillation circuit
- oscillation
- varactor
- 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
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
PURPOSE: To prevent abnormal oscillation, by connecting a diode in the same direction as a varactor diode in a high-frequency LC oscillation circuit using the varactor diode.
CONSTITUTION: The oscillation frequency of a Colpitts high-frequency oscillation circuit is determined by coil L1 and resonance capacity C3 and the DC voltage of varactor diode D1. To vary the frequency, variable resistance VR1 is varied to vary a voltage applied across diode D1. In the same direction as diode D1, diode D2 of small forward resistance with no capacitive property is connected matching in polarity with diode D1. Consequently, varactor diode D1 is shorted by diode D2 when diode D1 is applied with a forward bias, so that abnormal oscillation can be prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16248878A JPS5590105A (en) | 1978-12-28 | 1978-12-28 | High-frequency oscillation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16248878A JPS5590105A (en) | 1978-12-28 | 1978-12-28 | High-frequency oscillation circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5590105A true JPS5590105A (en) | 1980-07-08 |
Family
ID=15755559
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16248878A Pending JPS5590105A (en) | 1978-12-28 | 1978-12-28 | High-frequency oscillation circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5590105A (en) |
-
1978
- 1978-12-28 JP JP16248878A patent/JPS5590105A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5726902A (en) | Fet oscillation circuit | |
JPS6482807A (en) | Microwave oscillator | |
JPS5590105A (en) | High-frequency oscillation circuit | |
JPS56120203A (en) | Controllable oscillator in frequency by current change | |
JPS5528677A (en) | Frequency conversion circuit | |
JPS5673906A (en) | Microwave oscillator | |
JPS5731206A (en) | Voltage control oscillator | |
JPS5555604A (en) | Piezoelectric oscillator of temperature compensation type | |
EP0165736A3 (en) | Injection locked rf oscillator and method of generating rf energy | |
JPS55125703A (en) | Voltage controlled crystal oscillator | |
JPS5773518A (en) | Voltage-controlling oscillator circuit | |
JPS567526A (en) | Diode switch circuit including resonant circuit | |
JPS55125702A (en) | Crystal oscillator of temperature compensation | |
JPS54144812A (en) | Audio demodulator | |
JPS55147808A (en) | Overtone oscillator | |
JPS55149509A (en) | Uhf high frequency amplifying circuit | |
JPS5539453A (en) | Self-oscillating circuit | |
JPS57192104A (en) | Voltage controlled quartz oscillator | |
JPS6486701A (en) | Voltage controlled crystal oscillating device | |
JPS57101402A (en) | Voltage controlled variable frequency oscillator | |
JPS5783903A (en) | Quartz oscillating circuit | |
JPS5752204A (en) | Microwave integrated circuit type oscillator | |
JPS55112006A (en) | Oscillator | |
JPS54144165A (en) | Crystal oscillator circuit | |
JPS5467364A (en) | Driving circuit |