JPS60112132U - receiving device - Google Patents
receiving deviceInfo
- Publication number
- JPS60112132U JPS60112132U JP20357483U JP20357483U JPS60112132U JP S60112132 U JPS60112132 U JP S60112132U JP 20357483 U JP20357483 U JP 20357483U JP 20357483 U JP20357483 U JP 20357483U JP S60112132 U JPS60112132 U JP S60112132U
- Authority
- JP
- Japan
- Prior art keywords
- diode
- agc voltage
- circuit
- receiving device
- antenna
- 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
- Control Of Amplification And Gain Control (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図及び第2図は従来例を示す回路図、並びに第3図
は本考案の実施例を示す回路図である。
1・・・・・・アンテナ、3・・・・・・アンテナ同調
回路、10・・・・・・PINダイオード、11・・・
・・・抵抗、13・・・・・・可変容量ダイオード。1 and 2 are circuit diagrams showing a conventional example, and FIG. 3 is a circuit diagram showing an embodiment of the present invention. 1...Antenna, 3...Antenna tuning circuit, 10...PIN diode, 11...
...Resistor, 13...Variable capacitance diode.
Claims (1)
減衰回路をアンテナ入力段に設けて該アンテナ入力段で
利得制御を行うようにした受信装置において、アンテナ
同調回路の前段に該回路と直列に可変容量ダイオードを
挿入し、該可変容量ダイオードに前記減衰回路のPIN
ダイオードを制御するAGC電圧を加えるようになし、
AGC電圧による該可変容量ダイオードの容量変化によ
り、AGC電圧によるPINダイオードの制御によって
生じるアンテナ回路のインピーダンス変化を補正するよ
うにしたことを特徴とする受信装置。In a receiving device in which an attenuation circuit using a PIN diode controlled by an AGC voltage is provided at an antenna input stage to perform gain control at the antenna input stage, a variable capacitance diode is installed in series with the circuit before the antenna tuning circuit. and connect the PIN of the attenuation circuit to the variable capacitance diode.
Add AGC voltage to control the diode,
1. A receiving device characterized in that an impedance change in an antenna circuit caused by controlling a PIN diode using an AGC voltage is corrected by a capacitance change of the variable capacitance diode caused by an AGC voltage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20357483U JPS60112132U (en) | 1983-12-29 | 1983-12-29 | receiving device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20357483U JPS60112132U (en) | 1983-12-29 | 1983-12-29 | receiving device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60112132U true JPS60112132U (en) | 1985-07-30 |
Family
ID=30765980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20357483U Pending JPS60112132U (en) | 1983-12-29 | 1983-12-29 | receiving device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60112132U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008035419A (en) * | 2006-07-31 | 2008-02-14 | Mitsumi Electric Co Ltd | Fm amplifier for car radio and fm receiver having it |
WO2009084098A1 (en) * | 2007-12-27 | 2009-07-09 | Mitsumi Electric Co., Ltd. | Fm amplifier for car radio and fm receiver with the same |
JP2010074395A (en) * | 2008-09-17 | 2010-04-02 | Sharp Corp | Tuner module for receiving tv broadcast, and tv broadcast receiver with the same |
-
1983
- 1983-12-29 JP JP20357483U patent/JPS60112132U/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008035419A (en) * | 2006-07-31 | 2008-02-14 | Mitsumi Electric Co Ltd | Fm amplifier for car radio and fm receiver having it |
WO2009084098A1 (en) * | 2007-12-27 | 2009-07-09 | Mitsumi Electric Co., Ltd. | Fm amplifier for car radio and fm receiver with the same |
JP2010074395A (en) * | 2008-09-17 | 2010-04-02 | Sharp Corp | Tuner module for receiving tv broadcast, and tv broadcast receiver with the same |
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