JPS558101A - Tracking oscillator - Google Patents
Tracking oscillatorInfo
- Publication number
- JPS558101A JPS558101A JP7925978A JP7925978A JPS558101A JP S558101 A JPS558101 A JP S558101A JP 7925978 A JP7925978 A JP 7925978A JP 7925978 A JP7925978 A JP 7925978A JP S558101 A JPS558101 A JP S558101A
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- oscillator
- voltage
- comparison
- 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.)
- Granted
Links
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To secure the steady operation of the oscillator to the temperature change as well as to realize a quick tracking action by giving an occasional comparison and correction to the initial set frequency of the voltage control oscillator based on the reference frequency. CONSTITUTION:For comparison and correction, switch 3 is switched to supply the output of reference frequency oscillator 2 to mixer circuit 4 in place of the reception signals supplied to terminal 1. And the output of oscillator 2 is mixed with the output of voltage control oscillator 10, and the beat output is applied to frequency discrimination circuit 5. The DC voltage output is compared with reference voltage VR at voltage comparator 12, and the value is memorized in memory circuit 16 for the calibration signals given from calibration signal generation circuit 17 when the comparison output is produced. After this, the normal tracking action is given. Thus the contents of circuit 16 is converted into the analog voltage through D-A converter 19 and then added with the output given from circuit 5 via adder circuit 8 which is inserted to the input side of DC amplifier 9. As a result, the fluctuation of the initial set frequency can be corrected for oscillator 10.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53079259A JPS585533B2 (en) | 1978-07-01 | 1978-07-01 | tracking oscillator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53079259A JPS585533B2 (en) | 1978-07-01 | 1978-07-01 | tracking oscillator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS558101A true JPS558101A (en) | 1980-01-21 |
JPS585533B2 JPS585533B2 (en) | 1983-01-31 |
Family
ID=13684851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53079259A Expired JPS585533B2 (en) | 1978-07-01 | 1978-07-01 | tracking oscillator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS585533B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5894209A (en) * | 1981-11-30 | 1983-06-04 | Victor Co Of Japan Ltd | Frequency discriminator |
-
1978
- 1978-07-01 JP JP53079259A patent/JPS585533B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5894209A (en) * | 1981-11-30 | 1983-06-04 | Victor Co Of Japan Ltd | Frequency discriminator |
Also Published As
Publication number | Publication date |
---|---|
JPS585533B2 (en) | 1983-01-31 |
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