JPS5963545U - antenna input circuit - Google Patents
antenna input circuitInfo
- Publication number
- JPS5963545U JPS5963545U JP15879282U JP15879282U JPS5963545U JP S5963545 U JPS5963545 U JP S5963545U JP 15879282 U JP15879282 U JP 15879282U JP 15879282 U JP15879282 U JP 15879282U JP S5963545 U JPS5963545 U JP S5963545U
- Authority
- JP
- Japan
- Prior art keywords
- audio signal
- terminal
- electroacoustic transducer
- input circuit
- high frequency
- 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
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Details Of Aerials (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図は従来のアンテナ入力回路の回路図、第２図は本
考案−実施例を示す回路図、第３図イは代表的なＴ型バ
ンドパスフィルタの回路図、第３図口及びハは代表的な
通口型バンドパスフィルタの回路図である。
１・・・・・・増幅部、１Ａ・１Ｂ・・・・・・ヘッド
ホンアンプ、２・・・・・・検波部、３・・・・・・チ
ューナ、４・４′・・・・・・ヘッドホンジャック、４
０１・・・・・・スイッチ端子、４０１′・４０２′・
・・・・・音声信号端子、４０３・４０３’・・・・・
・アース端子、５・・・・・・バンドパスフィルタ、６
・・・・・・バンドパスフィルタ入力端子、７・・・、
・・・バンドパスフィルタ接地端子、８・・０ｅｅバン
ドパスフイルタ出力端子、Ｌ１〜Ｌ、・・・・・・高周
波チョークコイル、Ｌ３１．Ｌ３２・・・・・・高周波
チョークコイル、Ｃ１〜Ｃ１ｏ・・・・・・高周波用コ
ンデンサ。Figure 1 is a circuit diagram of a conventional antenna input circuit, Figure 2 is a circuit diagram showing an embodiment of the present invention, Figure 3A is a circuit diagram of a typical T-type bandpass filter, and Figure 3 is a circuit diagram of a typical T-type bandpass filter. is a circuit diagram of a typical port-type bandpass filter. 1...Amplification section, 1A/1B...Headphone amplifier, 2...Detection section, 3...Tuner, 4/4'...・Headphone jack, 4
01...Switch terminal, 401', 402',
...Audio signal terminal, 403/403'...
・Earth terminal, 5...Band pass filter, 6
...Band pass filter input terminal, 7...,
. . . Band pass filter ground terminal, 8 . . 0ee band pass filter output terminal, L1 to L, . . . High frequency choke coil, L31. L32...High frequency choke coil, C1~C1o...High frequency capacitor.
Claims (1)
号伝達線及び電波受信用のアンテナとして共用するヘッ
ドホン等の電気音響変換器と、前記電気音響変換器を接
続するジャックのアース端子とチューナの高周波信号入
力端子との間に介挿され、受信目的周波数帯域を通過周
波数帯域とするバンドパスフィルタと、前記電気音響変
換器を接続するジャックの音声信号端子と増幅器の音声
信号出力端子との間に介挿される高周波チョークコイル
とからなるアンテナ入力回路。In a portable radio receiver, an electroacoustic transducer such as a headphone whose lead wire is shared as an audio signal transmission line and an antenna for receiving radio waves, and a ground terminal of a jack that connects the electroacoustic transducer and a high frequency signal of a tuner. A bandpass filter is inserted between the input terminal and the frequency band to pass through the target receiving frequency band, and the audio signal terminal of the jack connecting the electroacoustic transducer and the audio signal output terminal of the amplifier are interposed. Antenna input circuit consisting of an inserted high frequency choke coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15879282U JPS5963545U (en) | 1982-10-20 | 1982-10-20 | antenna input circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15879282U JPS5963545U (en) | 1982-10-20 | 1982-10-20 | antenna input circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5963545U true JPS5963545U (en) | 1984-04-26 |
Family
ID=30349722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15879282U Pending JPS5963545U (en) | 1982-10-20 | 1982-10-20 | antenna input circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5963545U (en) |
-
1982
- 1982-10-20 JP JP15879282U patent/JPS5963545U/en active Pending
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