JPS59137634U - loop filter - Google Patents

loop filter

Info

Publication number
JPS59137634U
JPS59137634U JP3022283U JP3022283U JPS59137634U JP S59137634 U JPS59137634 U JP S59137634U JP 3022283 U JP3022283 U JP 3022283U JP 3022283 U JP3022283 U JP 3022283U JP S59137634 U JPS59137634 U JP S59137634U
Authority
JP
Japan
Prior art keywords
loop filter
controlled oscillator
voltage controlled
darlington transistor
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.)
Granted
Application number
JP3022283U
Other languages
Japanese (ja)
Other versions
JPH0448018Y2 (en
Inventor
安島　秀延
奴賀　忠雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pioneer Corp filed Critical Pioneer Corp
Priority to JP3022283U priority Critical patent/JPS59137634U/en
Publication of JPS59137634U publication Critical patent/JPS59137634U/en
Application granted granted Critical
Publication of JPH0448018Y2 publication Critical patent/JPH0448018Y2/ja
Granted legal-status Critical Current

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

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はＰＬＬの基本ループを示すブロック図、　、第
２図Ａ、　Ｂは従来のＦＭ用・ＡＭ用ループフィルター
の回路図、第３図は従来のＦＭ−ＡＭ共用ループフィル
ターの回路図、および第４図は本考案の　　　　゛一実
施例よりなるＦＭ、ＡＭ共用ループフィルターの回路図
である。Fig. 1 is a block diagram showing the basic loop of PLL, Fig. 2 A and B are circuit diagrams of conventional FM/AM loop filters, Fig. 3 is a circuit diagram of a conventional FM-AM common loop filter, FIG. 4 is a circuit diagram of an FM/AM common loop filter according to an embodiment of the present invention.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電圧制御発振器、可変分周器、位相比較器およびチャー
ジポンプを備え、比較周波数を減衰させるためのループ
フィルターによってチューニング電圧を発生させ、電圧
制御発振器をコントロールするＰＬＬシンセサイザ方式
のチューナに用いられるループフィルターにおいて、該
ループフィルターがエミッタフォロワとダーリントント
ランジスタ、抵抗およびコンデンサから構成され、かつ
、ダーリントントランジスタのコレクタから複数の受信
バンド用経路をそれぞれ設けたことを特徴と、するルー
プフィルター。A loop filter used in a PLL synthesizer type tuner that includes a voltage controlled oscillator, variable frequency divider, phase comparator, and charge pump, generates a tuning voltage using a loop filter to attenuate the comparison frequency, and controls the voltage controlled oscillator. A loop filter comprising an emitter follower, a Darlington transistor, a resistor, and a capacitor, and a plurality of receiving band paths are provided from the collector of the Darlington transistor.
JP3022283U 1983-03-02 1983-03-02 loop filter Granted JPS59137634U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3022283U JPS59137634U (en) 1983-03-02 1983-03-02 loop filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3022283U JPS59137634U (en) 1983-03-02 1983-03-02 loop filter

Publications (2)

Publication Number Publication Date
JPS59137634U true JPS59137634U (en) 1984-09-13
JPH0448018Y2 JPH0448018Y2 (en) 1992-11-12

Family

ID=30161083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3022283U Granted JPS59137634U (en) 1983-03-02 1983-03-02 loop filter

Country Status (1)

Country Link
JP (1) JPS59137634U (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55133619U (en) * 1979-03-13 1980-09-22

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55133619U (en) * 1979-03-13 1980-09-22

Also Published As

Publication number Publication date
JPH0448018Y2 (en) 1992-11-12

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