JPS5883846U - Multi-band receiver antenna circuit - Google Patents

Multi-band receiver antenna circuit

Info

Publication number
JPS5883846U
JPS5883846U JP17977181U JP17977181U JPS5883846U JP S5883846 U JPS5883846 U JP S5883846U JP 17977181 U JP17977181 U JP 17977181U JP 17977181 U JP17977181 U JP 17977181U JP S5883846 U JPS5883846 U JP S5883846U
Authority
JP
Japan
Prior art keywords
band
antenna
antenna circuit
circuit
band receiver
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
JP17977181U
Other languages
Japanese (ja)
Inventor
福場 俊弘
Original Assignee
三洋電機株式会社
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 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to JP17977181U priority Critical patent/JPS5883846U/en
Publication of JPS5883846U publication Critical patent/JPS5883846U/en
Pending legal-status Critical Current

Links

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (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 the drawing]

第1図は従来の複数バンド受信機のアンテナ回路を示す
回路図、第2図は本考案に係る複数バンド受信機のアン
テナ回路の一実施例を示す回路図、第3図は本考案の他
の実施例を示す回路図である。 1・・・・・・フエライトコア、3,4・・・・・・ア
ンテナ同調回路、9・・・・・・コンバータ回路、La
−,, Lb−1・・・・・・1次巻線、La−2,L
b−2・・・・・・2次巻線、S1・・・・・・第1の
バンド切換スイッチ、D1,D2・・・・・・可変容量
ダイオード。
Fig. 1 is a circuit diagram showing an antenna circuit of a conventional multi-band receiver, Fig. 2 is a circuit diagram showing an embodiment of an antenna circuit of a multi-band receiver according to the present invention, and Fig. 3 is a circuit diagram showing an antenna circuit of a multi-band receiver according to the present invention. FIG. 2 is a circuit diagram showing an embodiment of the present invention. 1... Ferrite core, 3, 4... Antenna tuning circuit, 9... Converter circuit, La
-,, Lb-1...Primary winding, La-2, L
b-2... Secondary winding, S1... First band changeover switch, D1, D2... Variable capacitance diode.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 1本のフエライトコアに複数のバンド用のアンテナコイ
ルを巻《ようにした複数バンド受信機のアンテナ回路に
於いて、前記各バンド用のアンテナコイルの1次巻線に
夫々可変容量ダイオードを接続して各バンドのアンテナ
同調回路を構成し、前記各バンド用のアンテナコイルの
1次巻線のアース側にバンド切換スイッチを設け、該バ
ンド切換スイッチを介して前記可変容量ダイオードの一
つに選択的に所望の放送周波数に対応する同調用直流電
圧を加えるようにしてなる複数バンド受信機のアンテナ
回路。
In the antenna circuit of a multi-band receiver in which antenna coils for multiple bands are wound around a single ferrite core, a variable capacitance diode is connected to the primary winding of the antenna coil for each band. constitute an antenna tuning circuit for each band, and a band changeover switch is provided on the ground side of the primary winding of the antenna coil for each band, and one of the variable capacitance diodes is selectively connected to one of the variable capacitance diodes through the band changeover switch. An antenna circuit for a multi-band receiver that applies a tuning DC voltage corresponding to a desired broadcast frequency to the antenna circuit.
JP17977181U 1981-12-01 1981-12-01 Multi-band receiver antenna circuit Pending JPS5883846U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17977181U JPS5883846U (en) 1981-12-01 1981-12-01 Multi-band receiver antenna circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17977181U JPS5883846U (en) 1981-12-01 1981-12-01 Multi-band receiver antenna circuit

Publications (1)

Publication Number Publication Date
JPS5883846U true JPS5883846U (en) 1983-06-07

Family

ID=29975765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17977181U Pending JPS5883846U (en) 1981-12-01 1981-12-01 Multi-band receiver antenna circuit

Country Status (1)

Country Link
JP (1) JPS5883846U (en)

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