JPS5981143U - antenna switching circuit - Google Patents
antenna switching circuitInfo
- Publication number
- JPS5981143U JPS5981143U JP17819482U JP17819482U JPS5981143U JP S5981143 U JPS5981143 U JP S5981143U JP 17819482 U JP17819482 U JP 17819482U JP 17819482 U JP17819482 U JP 17819482U JP S5981143 U JPS5981143 U JP S5981143U
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- tuning circuit
- antenna tuning
- capacitor
- switching 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
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) [Abstract] 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切換回路図、第２図は本考案の
アンテナ切換回路図である。
１０・・・第１アンテナ同調回路、１１・・・第２アン
テナ同調回路、１２・・・第１アンテナコイル、１３・
・・第１可変コンデンサー、１４・・・第２アンテナコ
イル、１５・・・第２可変コンデンサー、１６・・・バ
ンド切換回路、１８・・・半導体可変容量タイオード、
２１・・・制御トランジスタ、２２・・・動作切換スイ
ッチ。FIG. 1 is a conventional antenna switching circuit diagram, and FIG. 2 is an antenna switching circuit diagram of the present invention. DESCRIPTION OF SYMBOLS 10... 1st antenna tuning circuit, 11... 2nd antenna tuning circuit, 12... 1st antenna coil, 13...
...First variable capacitor, 14...Second antenna coil, 15...Second variable capacitor, 16...Band switching circuit, 18...Semiconductor variable capacitance diode,
21...Control transistor, 22...Operation changeover switch.
Claims (1)
れた第１アンテナ同調回路と、前記第１アンテナコイル
と同一コア−Ｌに巻回された第２アンテナコイルと第２
コンデンサとにより形成された第２アンテナ同調回路と
、ハンド切換スイッチにて切換えられ前記第１アンテナ
同調回路又は第２アンテナ同調回路のいずれか一方に接
続される半導体可変容量ダイオードと、前記バンド切換
スイッチに連動する動作切換スイッチにてオンオフされ
、前記第１アンテナ同調回路又は第２アンテナ同調回路
の少くとも一方を不作用状態にするスイッチ素子とより
なるアンテナ切換回路。A first antenna tuning circuit formed by a first antenna coil and a first capacitor, a second antenna coil wound around the same core L as the first antenna coil, and a second antenna tuning circuit formed by a first antenna coil and a first capacitor;
a second antenna tuning circuit formed by a capacitor; a semiconductor variable capacitance diode connected to either the first antenna tuning circuit or the second antenna tuning circuit by being switched by a hand switching switch; and the band switching switch. An antenna switching circuit comprising a switching element that is turned on and off by an operation changeover switch that is linked to the switching element to put at least one of the first antenna tuning circuit or the second antenna tuning circuit into an inactive state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17819482U JPS5981143U (en) | 1982-11-24 | 1982-11-24 | antenna switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17819482U JPS5981143U (en) | 1982-11-24 | 1982-11-24 | antenna switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5981143U true JPS5981143U (en) | 1984-06-01 |
Family
ID=30386942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17819482U Pending JPS5981143U (en) | 1982-11-24 | 1982-11-24 | antenna switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5981143U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5436006A (en) * | 1977-08-25 | 1979-03-16 | Touei Shiyoukou Kk | Structure of fixing lower portion of temporary frame in work of executing cloth foundation |
-
1982
- 1982-11-24 JP JP17819482U patent/JPS5981143U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5436006A (en) * | 1977-08-25 | 1979-03-16 | Touei Shiyoukou Kk | Structure of fixing lower portion of temporary frame in work of executing cloth foundation |
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