JPS59154927U - Active low pass filter - Google Patents
Active low pass filterInfo
- Publication number
- JPS59154927U JPS59154927U JP3027983U JP3027983U JPS59154927U JP S59154927 U JPS59154927 U JP S59154927U JP 3027983 U JP3027983 U JP 3027983U JP 3027983 U JP3027983 U JP 3027983U JP S59154927 U JPS59154927 U JP S59154927U
- Authority
- JP
- Japan
- Prior art keywords
- pass filter
- active low
- low pass
- phase
- 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
Landscapes
- Networks Using Active Elements (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は一般のＰＬＬ系の構成図、第２図は能動形ロー
パスフィルタの回路例、第３図は第１図中゛のミクサの
周波数関係の説明図、第４図は容量ダイオードの電圧対
容量の曲線例、第５図は本考案の能動形ローパスフィル
タの構造例である。
ＶＣＯ・・・・・・電圧制御発振器、Ｍ・・・・・・ミ
クサ、ＰＤ・・・・・・位相比較器、Ｃ・・・・・・コ
ンデンサ、Ｒ１＋ Ｒ２＋Ｒ３・・・・・・抵抗、Ｔｒ
・・・・・・トランジスタ、Ｄ・・・・・・ダイオード
。Figure 1 is a configuration diagram of a general PLL system, Figure 2 is a circuit example of an active low-pass filter, Figure 3 is an explanatory diagram of the frequency relationship of the mixer in Figure 1, and Figure 4 is the voltage of the capacitive diode. An example of the capacitance versus capacitance curve shown in FIG. 5 is a structural example of the active low-pass filter of the present invention. VCO: voltage controlled oscillator, M: mixer, PD: phase comparator, C: capacitor, R1+ R2+R3: resistor, Tr
...Transistor, D...Diode.
Claims (1)
器の制御出力と電圧制御発振器（ＶＣＯ）の制御入力と
の間にそう人する能動形のロー・パス・フィルタ（ＬＰ
Ｆ）を構成するトランジスタのコレクタ端子と直列に導
通方向のダイオードをそう入口た能動形ローパスフィル
タ。An active low pass filter (LP) between the control output of the phase comparator of a phase-locked roof (PLL) circuit and the control input of a voltage-controlled oscillator (VCO).
F) is an active low-pass filter in which a conductive diode is connected in series with the collector terminal of the transistor that constitutes F).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3027983U JPS59154927U (en) | 1983-03-02 | 1983-03-02 | Active low pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3027983U JPS59154927U (en) | 1983-03-02 | 1983-03-02 | Active low pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59154927U true JPS59154927U (en) | 1984-10-17 |
Family
ID=30161145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3027983U Pending JPS59154927U (en) | 1983-03-02 | 1983-03-02 | Active low pass filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59154927U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362963A (en) * | 1976-11-17 | 1978-06-05 | Matsushita Electric Ind Co Ltd | Current control filter |
| JPS55121747A (en) * | 1979-03-13 | 1980-09-19 | Pioneer Electronic Corp | Low pass filter of pll circuit |
-
1983
- 1983-03-02 JP JP3027983U patent/JPS59154927U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362963A (en) * | 1976-11-17 | 1978-06-05 | Matsushita Electric Ind Co Ltd | Current control filter |
| JPS55121747A (en) * | 1979-03-13 | 1980-09-19 | Pioneer Electronic Corp | Low pass filter of pll circuit |
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