JPH0438146U - - Google Patents
Info
- Publication number
- JPH0438146U JPH0438146U JP7975690U JP7975690U JPH0438146U JP H0438146 U JPH0438146 U JP H0438146U JP 7975690 U JP7975690 U JP 7975690U JP 7975690 U JP7975690 U JP 7975690U JP H0438146 U JPH0438146 U JP H0438146U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- terminal
- diode
- capacitor
- broadcast reception
- 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
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
第１図はこの考案に係るラジオ受信機のアンテ
ナ回路の実施例を示す回路図、第２図は従来例の
回路図である。
主は符号の説明、１……第１のＲＦコイル、２
……第２のＲＦコイル、３……第３のＲＦコイル
、４……第４のＲＦコイル、１１ａ，１１ｂ，１
１ｃ，１１ｄ……端子、１２，１４，１６，１８
……コンデンサ、１３，１５，１７，１９……ダ
イオード。
FIG. 1 is a circuit diagram showing an embodiment of the antenna circuit of a radio receiver according to this invention, and FIG. 2 is a circuit diagram of a conventional example. Mainly explanation of symbols, 1...first RF coil, 2
...Second RF coil, 3...Third RF coil, 4...Fourth RF coil, 11a, 11b, 1
1c, 11d... terminal, 12, 14, 16, 18
...Capacitor, 13,15,17,19...Diode.
Claims (1)
短波帯の放送受信用の第２のＲＦコイルと、第２
の短波帯の放送受信用の第３のＲＦコイルと、Ｆ
Ｍ放送受信用の第４のＲＦコイルとからなるラジ
オ受信機において、 アンテナ接続用の４つの端子を設け、第１の端
子を第１のコンデンサと第１のダイオードとの直
列回路を介して第１のＲＦコイルに接続せしめる
と共に第２のコンデンサと第２のダイオードとの
直列回路を介して第２のＲＦコイルに接続せしめ
、また、第２の端子を第３のコンデンサと第３の
ダイオードとの直列回路を介して第３のＲＦコイ
ルに接続せしめると共に第４のコンデンサと第４
のダイオードとの直列回路を介して第４のＲＦコ
イルの一方の端子に接続せしめ、第３の端子を受
信機のグランドに、第４の端子を第４のＲＦコイ
ルの他方の端子に接続せしめ、前記ダイオードを
スイツチングせしめて端子に接続されたアンテナ
の受信信号を所定のＲＦコイルに導くように構成
したことを特徴とするラジオ受信機のアンテナ回
路。[Claims for Utility Model Registration] A first RF coil for medium wave broadcast reception, a second RF coil for first short wave band broadcast reception, and a second RF coil for medium wave broadcast reception.
a third RF coil for shortwave band broadcast reception;
In a radio receiver consisting of a fourth RF coil for receiving M broadcasts, four terminals are provided for antenna connection, and the first terminal is connected to the first terminal through a series circuit of a first capacitor and a first diode. The second terminal is connected to the first RF coil and connected to the second RF coil via a series circuit of the second capacitor and the second diode, and the second terminal is connected to the third capacitor and the third diode. is connected to the third RF coil through a series circuit of the fourth capacitor and the fourth RF coil.
is connected to one terminal of the fourth RF coil through a series circuit with a diode, the third terminal is connected to the ground of the receiver, and the fourth terminal is connected to the other terminal of the fourth RF coil. An antenna circuit for a radio receiver, characterized in that the diode is switched to guide a received signal of an antenna connected to a terminal to a predetermined RF coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7975690U JPH0438146U (en) | 1990-07-30 | 1990-07-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7975690U JPH0438146U (en) | 1990-07-30 | 1990-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0438146U true JPH0438146U (en) | 1992-03-31 |
Family
ID=31624205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7975690U Pending JPH0438146U (en) | 1990-07-30 | 1990-07-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438146U (en) |
-
1990
- 1990-07-30 JP JP7975690U patent/JPH0438146U/ja active Pending
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