JPS5530300A - Gain control circuit - Google Patents
Gain control circuitInfo
- Publication number
- JPS5530300A JPS5530300A JP11042479A JP11042479A JPS5530300A JP S5530300 A JPS5530300 A JP S5530300A JP 11042479 A JP11042479 A JP 11042479A JP 11042479 A JP11042479 A JP 11042479A JP S5530300 A JPS5530300 A JP S5530300A
- Authority
- JP
- Japan
- Prior art keywords
- gain
- control circuit
- gain control
- wave intensity
- agc
- 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.)
- Granted
Links
- 230000003321 amplification Effects 0.000 abstract 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
- H03G3/3068—Circuits generating control signals for both R.F. and I.F. stages
Landscapes
- Control Of Amplification And Gain Control (AREA)
Abstract
PURPOSE:To obtain a RF amplifier circuit high in practical sensitivity by controlling gains of two RF amplification stages. CONSTITUTION:When the received radio wave intensity of a desired signal increases, detection output signal 19 of voltage comparator 17 is applied to AGC filter 14, where it is smoothed, and its output is passed through an ordianry AGC paht to decrease the gain of the 1st intermediate frequency amplification stage 6 first and when the received-wave intensity increases further, the gain of RF amplification stage 2 is decreased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11042479A JPS5530300A (en) | 1979-08-31 | 1979-08-31 | Gain control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11042479A JPS5530300A (en) | 1979-08-31 | 1979-08-31 | Gain control circuit |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11278674A Division JPS5345250B2 (en) | 1974-10-02 | 1974-10-02 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16034083A Division JPS5972236A (en) | 1983-09-02 | 1983-09-02 | Receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5530300A true JPS5530300A (en) | 1980-03-04 |
JPS6154288B2 JPS6154288B2 (en) | 1986-11-21 |
Family
ID=14535400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11042479A Granted JPS5530300A (en) | 1979-08-31 | 1979-08-31 | Gain control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5530300A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58201415A (en) * | 1982-05-20 | 1983-11-24 | Akai Electric Co Ltd | Agc circuit of receiver |
JPS5944824A (en) * | 1982-08-02 | 1984-03-13 | フエアチアイルド・カメラ・アンド・インストルメント・コ−ポレ−シヨン | Lift off method of foring self-aligning contact |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS491124A (en) * | 1972-04-15 | 1974-01-08 |
-
1979
- 1979-08-31 JP JP11042479A patent/JPS5530300A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS491124A (en) * | 1972-04-15 | 1974-01-08 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58201415A (en) * | 1982-05-20 | 1983-11-24 | Akai Electric Co Ltd | Agc circuit of receiver |
JPS5944824A (en) * | 1982-08-02 | 1984-03-13 | フエアチアイルド・カメラ・アンド・インストルメント・コ−ポレ−シヨン | Lift off method of foring self-aligning contact |
Also Published As
Publication number | Publication date |
---|---|
JPS6154288B2 (en) | 1986-11-21 |
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