JPS55147837A - Microwave oscillator - Google Patents
Microwave oscillatorInfo
- Publication number
- JPS55147837A JPS55147837A JP5531379A JP5531379A JPS55147837A JP S55147837 A JPS55147837 A JP S55147837A JP 5531379 A JP5531379 A JP 5531379A JP 5531379 A JP5531379 A JP 5531379A JP S55147837 A JPS55147837 A JP S55147837A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- input
- pll circuit
- oscillation
- resonator
- 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 abstract 3
- 239000013078 crystal Substances 0.000 abstract 2
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
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To make it possible to use a cheap resonator and oscillate stably with a high frequency, by subjecting the oscillation frequency to feedback control by a PLL circuit. CONSTITUTION:The signal oscillated with frequency f1 by oscillation element 13 is stabilized to a certain degree by resonator 12. A part of f1 is input to the second oscillator 17 through line 21 by directional coupler 14, and a frequency is oscillated with f2=f1/N (N is a natural number), and this output is input to PLL circuit 18. This input frequency and the reference frequency of the crystal oscillator in PLL circuit 18 are compared with each other, and the DC voltage of their difference is applied to varactor diode 22 for resonance frequency adjustment through line 20, thus keeping frequency change of oscillation frequency f1 similar to the reference crystal frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5531379A JPS55147837A (en) | 1979-05-08 | 1979-05-08 | Microwave oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5531379A JPS55147837A (en) | 1979-05-08 | 1979-05-08 | Microwave oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55147837A true JPS55147837A (en) | 1980-11-18 |
Family
ID=12995061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5531379A Pending JPS55147837A (en) | 1979-05-08 | 1979-05-08 | Microwave oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55147837A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62258504A (en) * | 1986-03-14 | 1987-11-11 | バウマー エレクトリク アクチエンゲゼルシャフト | Microwave oscillator |
-
1979
- 1979-05-08 JP JP5531379A patent/JPS55147837A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62258504A (en) * | 1986-03-14 | 1987-11-11 | バウマー エレクトリク アクチエンゲゼルシャフト | Microwave oscillator |
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