JPS6079853U - Antenna switching circuit of diversity receiver - Google Patents
Antenna switching circuit of diversity receiverInfo
- Publication number
- JPS6079853U JPS6079853U JP17237383U JP17237383U JPS6079853U JP S6079853 U JPS6079853 U JP S6079853U JP 17237383 U JP17237383 U JP 17237383U JP 17237383 U JP17237383 U JP 17237383U JP S6079853 U JPS6079853 U JP S6079853U
- Authority
- JP
- Japan
- Prior art keywords
- switching circuit
- transistor
- antenna switching
- antenna
- voltage
- 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)
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図は従来のダイパーシティ受信機の回路図であり、
第２図は本考案の実施例の回路図である。
Ｄ□、 Ｄ２−・・ピン・ダイオード、ＭＡＮＴ・・・
主アンテナ、５ＡＮＴ・・・副アンテナ、ＴＵＮＥＲ・
・・チューナ、Ｒ□・・・抵抗、’Ｑ２・・・トランジ
スタ、■ＡＣ８・・・ＡＧＣ電圧、ｑ・・・トランジス
タ（電圧補充回路）。Figure 1 is a circuit diagram of a conventional diversity receiver.
FIG. 2 is a circuit diagram of an embodiment of the present invention. D□, D2-...pin diode, MANT...
Main antenna, 5ANT...Sub antenna, TUNER・
...Tuner, R□...Resistor, 'Q2...Transistor, ■AC8...AGC voltage, q...Transistor (voltage replenishment circuit).
Claims (1)
テナを接続し、前記ピン・ダイオードのカソード側を共
通接続してチューナに接続するとともに抵抗とトランジ
スタを直列に介して接地し、このトランジスタを前記チ
ューナのＡＧＣ電圧で制御し、さらに前記二個のピン・
ダイオ」ドのそれぞれのアノード側に一方が高ければ他
方が低い反転する電圧を与え、ピン・ダイオードの導通
と非導通状態とによってアンテナを切換えるダイパーシ
ティ受信機のアンテナ切換回路において、前記トランジ
スタのベースに電圧補充回路を設け、前記トランジスタ
のベース電圧が所定値以下とならないように構成したこ
とを特徴とするダ 。 イバーシテイ受信機のアンテナ切換回路。[Claims for Utility Model Registration] An antenna is connected to the anode side of each of two pin diodes, and the cathode sides of the pin diodes are commonly connected and connected to a tuner, and a resistor and a transistor are connected in series. ground, this transistor is controlled by the AGC voltage of the tuner, and the two pins
In an antenna switching circuit of a dipersity receiver, an inverted voltage is applied to the anode side of each diode, one being high and the other being low, and the antenna is switched by the conducting and non-conducting state of the pin diode. A voltage replenishment circuit is provided in the transistor, and the base voltage of the transistor is configured not to fall below a predetermined value. Antenna switching circuit for diversity receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17237383U JPS6079853U (en) | 1983-11-09 | 1983-11-09 | Antenna switching circuit of diversity receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17237383U JPS6079853U (en) | 1983-11-09 | 1983-11-09 | Antenna switching circuit of diversity receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6079853U true JPS6079853U (en) | 1985-06-03 |
Family
ID=30375756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17237383U Pending JPS6079853U (en) | 1983-11-09 | 1983-11-09 | Antenna switching circuit of diversity receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6079853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6218125A (en) * | 1985-07-17 | 1987-01-27 | Nippon Telegr & Teleph Corp <Ntt> | Diversity synthesis circuit |
-
1983
- 1983-11-09 JP JP17237383U patent/JPS6079853U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6218125A (en) * | 1985-07-17 | 1987-01-27 | Nippon Telegr & Teleph Corp <Ntt> | Diversity synthesis circuit |
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