JPS62121843U - - Google Patents
Info
- Publication number
- JPS62121843U JPS62121843U JP888286U JP888286U JPS62121843U JP S62121843 U JPS62121843 U JP S62121843U JP 888286 U JP888286 U JP 888286U JP 888286 U JP888286 U JP 888286U JP S62121843 U JPS62121843 U JP S62121843U
- Authority
- JP
- Japan
- Prior art keywords
- voltage controlled
- oscillation
- phase
- pass filter
- converter
- 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
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 5
- 238000010586 diagram Methods 0.000 description 7
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Description
第１図は本考案の一実施例よりなるＰＬＬのブ
ロツク図、第２図はＬＰＦの回路図、第３図はア
ンプの回路図、第４図はＶＣＯの変換利得特性図
、第５図はＬＰＦの特性図、および第６図は従来
例よりなるＰＬＬのブロツク図である。
１……基準信号発生手段、２……位相比較手段
、３……ローパスフイルタ（ＬＰＦ）、４……ア
ンプ、５……電圧制御発振器（ＶＣＯ）、６……
制御手段。
Figure 1 is a block diagram of a PLL according to an embodiment of the present invention, Figure 2 is a circuit diagram of an LPF, Figure 3 is a circuit diagram of an amplifier, Figure 4 is a conversion gain characteristic diagram of a VCO, and Figure 5 is a diagram of a conversion gain characteristic of a VCO. A characteristic diagram of the LPF and FIG. 6 are a block diagram of a conventional PLL. DESCRIPTION OF SYMBOLS 1... Reference signal generation means, 2... Phase comparison means, 3... Low pass filter (LPF), 4... Amplifier, 5... Voltage controlled oscillator (VCO), 6...
control means.
Claims (1)
両手段の発振信号の位相差信号を発生する位相比
較手段と、位相差信号に応じたレベルの直流電圧
を電圧制御発振手段に供給するローパスフイルタ
と、該ローパスフイルタの直流出力を増幅するア
ンプと、位相比較手段に分周比データを送る制御
手段とからなるフエイズロツクループ回路におい
て、前記制御手段を前記ローパスフイルタ、アン
プおよび電圧制御発振手段に接続し、シフト信号
を入力させることにより、電圧制御発振手段から
複数帯域の発振信号を発生させるとともに、各帯
域の変換利得が均一になるようにアンプ利得を切
り換えるように構成したことを特徴とするフエイ
ズロツクループ回路。 Reference signal oscillation means, voltage controlled oscillation means, phase comparison means for generating a phase difference signal between the oscillation signals of both means, and a low pass filter that supplies a DC voltage of a level corresponding to the phase difference signal to the voltage controlled oscillation means. , an amplifier for amplifying the DC output of the low-pass filter, and a control means for sending frequency division ratio data to the phase comparison means; By connecting the converter to the converter and inputting a shift signal, the voltage controlled oscillator generates oscillation signals in multiple bands, and also switches the amplifier gain so that the conversion gain in each band is uniform. Phase lock loop circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP888286U JPS62121843U (en) | 1986-01-27 | 1986-01-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP888286U JPS62121843U (en) | 1986-01-27 | 1986-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62121843U true JPS62121843U (en) | 1987-08-03 |
Family
ID=30793677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP888286U Pending JPS62121843U (en) | 1986-01-27 | 1986-01-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62121843U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS533156A (en) * | 1976-06-30 | 1978-01-12 | Fujitsu Ltd | Pll circuit |
| JPS5443667A (en) * | 1977-09-13 | 1979-04-06 | Nec Corp | Variable frequency oscillator |
| JPS5470716A (en) * | 1977-11-17 | 1979-06-06 | Sony Corp | Synthesizer receiver |
-
1986
- 1986-01-27 JP JP888286U patent/JPS62121843U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS533156A (en) * | 1976-06-30 | 1978-01-12 | Fujitsu Ltd | Pll circuit |
| JPS5443667A (en) * | 1977-09-13 | 1979-04-06 | Nec Corp | Variable frequency oscillator |
| JPS5470716A (en) * | 1977-11-17 | 1979-06-06 | Sony Corp | Synthesizer receiver |
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