JPS5883846U - Multi-band receiver antenna circuit - Google Patents
Multi-band receiver antenna circuitInfo
- 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
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
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)
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.
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) |
-
1981
- 1981-12-01 JP JP17977181U patent/JPS5883846U/en active Pending
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