JPH0228115U - - Google Patents
Info
- Publication number
- JPH0228115U JPH0228115U JP10776988U JP10776988U JPH0228115U JP H0228115 U JPH0228115 U JP H0228115U JP 10776988 U JP10776988 U JP 10776988U JP 10776988 U JP10776988 U JP 10776988U JP H0228115 U JPH0228115 U JP H0228115U
- Authority
- JP
- Japan
- Prior art keywords
- output
- phase modulator
- amplitude
- filter
- subtracter
- 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
- 239000000284 extract Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Radar Systems Or Details Thereof (AREA)
Description
第１図は、この考案の一実施例による自動利得
制御装置のブロツク構成図、第２図は従来の自動
利得制御装置のブロツク構成図、第３図は第１図
の動作を周波数軸上で示した図で、４は振幅検波
器、５は減衰器、６はループフイルタ、７は２位
相変調器、８はコード発生器、９はバンドパスフ
イルタである。なお、図中同一符号は、同一、又
は相当部分を示す。
Fig. 1 is a block diagram of an automatic gain control device according to an embodiment of the invention, Fig. 2 is a block diagram of a conventional automatic gain control device, and Fig. 3 shows the operation of Fig. 1 on the frequency axis. In the diagram shown, 4 is an amplitude detector, 5 is an attenuator, 6 is a loop filter, 7 is a two-phase modulator, 8 is a code generator, and 9 is a bandpass filter. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
する２位相変調器と、この２位相変調器の出力か
ら上記２位相変調器の入力の周波数成分と異なる
サイドバンド周波数成分を取り出すバンドパスフ
イルタと、このサインバンドフイルタからの出力
の振幅を取り出す振幅検波器と、この振幅検波器
の出力から一定の電圧を減ずる減算器と、この減
算器の出力を増幅、フイルタリングするループフ
イルタと、このループフイルタの出力で制御され
るコード発生器とを有し、このコード発生器の出
力で上記２位相変調器を駆動することにより、上
記バンドパスフイルタの出力振幅を一定に保つこ
とを特徴とする自動利得制御装置。 A two-phase modulator that modulates the phase of a signal into two phases of 0 degrees or 180 degrees, and a bandpass filter that extracts a sideband frequency component different from the frequency component of the input of the two-phase modulator from the output of this two-phase modulator. , an amplitude detector that extracts the amplitude of the output from this sine band filter, a subtracter that subtracts a constant voltage from the output of this amplitude detector, a loop filter that amplifies and filters the output of this subtracter, and this and a code generator controlled by the output of the loop filter, and the output amplitude of the bandpass filter is kept constant by driving the two-phase modulator with the output of the code generator. Automatic gain control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10776988U JPH0228115U (en) | 1988-08-16 | 1988-08-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10776988U JPH0228115U (en) | 1988-08-16 | 1988-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0228115U true JPH0228115U (en) | 1990-02-23 |
Family
ID=31342482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10776988U Pending JPH0228115U (en) | 1988-08-16 | 1988-08-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0228115U (en) |
-
1988
- 1988-08-16 JP JP10776988U patent/JPH0228115U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0228115U (en) | ||
| JPH0186711U (en) | ||
| JPH0352825U (en) | ||
| JPH0216662U (en) | ||
| JPH0480119U (en) | ||
| JPS58510U (en) | amplifier circuit | |
| JPH0416667U (en) | ||
| JPS62127111U (en) | ||
| JPH0435693U (en) | ||
| JPH01171114U (en) | ||
| JPS60145729U (en) | Tracking type bandpass filter circuit | |
| JPS6115816U (en) | Digital automatic frequency control device | |
| JPS60145730U (en) | Tracking type bandpass filter circuit | |
| JPH0236237U (en) | ||
| JPS60172451U (en) | transponder device | |
| JPH0373056U (en) | ||
| JPH0464817U (en) | ||
| JPH0453323U (en) | ||
| JPS62127112U (en) | ||
| JPS62158672U (en) | ||
| JPH033852U (en) | ||
| JPS61121013U (en) | ||
| JPS6178439U (en) | ||
| JPS5920766U (en) | Video synchronous detection device | |
| JPS62117846U (en) |