JPS59127349U - FM electronic tuning tuner front end - Google Patents

FM electronic tuning tuner front end

Info

Publication number
JPS59127349U
JPS59127349U JP2020283U JP2020283U JPS59127349U JP S59127349 U JPS59127349 U JP S59127349U JP 2020283 U JP2020283 U JP 2020283U JP 2020283 U JP2020283 U JP 2020283U JP S59127349 U JPS59127349 U JP S59127349U
Authority
JP
Japan
Prior art keywords
electronic tuning
tuning tuner
tuner front
pass filter
circuit
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
Application number
JP2020283U
Other languages
Japanese (ja)
Inventor
石田　弘二
横矢　正敏
Original Assignee
パイオニア株式会社
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 パイオニア株式会社 filed Critical パイオニア株式会社
Priority to JP2020283U priority Critical patent/JPS59127349U/en
Publication of JPS59127349U publication Critical patent/JPS59127349U/en
Pending legal-status Critical Current

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  • Noise Elimination (AREA)
  • Superheterodyne Receivers (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) [Summary] 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 drawings]

第１図は本考案によるＦＭ電子同調チューナのフロント
エンドの実施例を示すブロック図、第２図は第１図のロ
ーパスフィルタの具体的実施例を含む回路図、第３図は
第１図及び第２図のローパスフィルタの周波数特性を示
す図である。 １・・・・・・高周波増幅回路、２・・・・・・混合回
路、３・・・・・・局部発振回路１，４・・晶・トラッ
キング形ローパスフィルタ、ｖＣｌ、ＶＣ２・・・バリ
キャップ、Ｃ１，Ｃ２・・・コンデンサ、Ｌｌ・・・コ
イル、Ｒ□、Ｒ２・・・抵抗。FIG. 1 is a block diagram showing an embodiment of the front end of an FM electronic tuning tuner according to the present invention, FIG. 2 is a circuit diagram including a specific embodiment of the low-pass filter of FIG. 1, and FIG. FIG. 3 is a diagram showing frequency characteristics of the low-pass filter of FIG. 2; 1...High frequency amplifier circuit, 2...Mixing circuit, 3...Local oscillation circuit 1, 4...Crystal/tracking type low pass filter, vCl, VC2...Vari Cap, C1, C2... Capacitor, Ll... Coil, R□, R2... Resistor.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 混合回路と局部発振回路との間に、受信周波数に追従し
て特性が変化するトラッキング形ローパスフィルタを挿
入したことを特徴とするＦＭ電子同調チューナのフロン
トエンド。A front end of an FM electronic tuning tuner characterized by inserting a tracking type low-pass filter whose characteristics change in accordance with the received frequency between a mixing circuit and a local oscillation circuit.
JP2020283U 1983-02-14 1983-02-14 FM electronic tuning tuner front end Pending JPS59127349U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020283U JPS59127349U (en) 1983-02-14 1983-02-14 FM electronic tuning tuner front end

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020283U JPS59127349U (en) 1983-02-14 1983-02-14 FM electronic tuning tuner front end

Publications (1)

Publication Number Publication Date
JPS59127349U true JPS59127349U (en) 1984-08-27

Family

ID=30151330

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020283U Pending JPS59127349U (en) 1983-02-14 1983-02-14 FM electronic tuning tuner front end

Country Status (1)

Country Link
JP (1) JPS59127349U (en)

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