JPS6284241U - - Google Patents
Info
- Publication number
- JPS6284241U JPS6284241U JP17383885U JP17383885U JPS6284241U JP S6284241 U JPS6284241 U JP S6284241U JP 17383885 U JP17383885 U JP 17383885U JP 17383885 U JP17383885 U JP 17383885U JP S6284241 U JPS6284241 U JP S6284241U
- Authority
- JP
- Japan
- Prior art keywords
- automatic gain
- amplitude detector
- waveform generator
- output
- gain controller
- 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
- 230000001934 delay Effects 0.000 claims 1
- 239000000284 extract Substances 0.000 claims 1
- 238000001228 spectrum Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Description
第１図は本考案の自動利得制御回路を有する復
調装置の一実施例のブロツク図、第２図は第１図
中の変調器７の入出力信号のスペクトラムを示し
、第２図ａは変調器７の入力信号、すなわち自動
利得制御器２の出力信号または遅延線６の出力信
号スペクトラムを示す図、第２図ｂは変調器７に
よつてＰＳＫ信号に逆変調が行なわれた後のスペ
クトラム、すなわち再生搬送波のスペクトラムを
示す図である。
１……帯域波器、２……自動利得制御器、３
……復調器、４……振幅検出器、５……切替スイ
ツチ、６……遅延線、７……変調器、８……狭帯
域帯域波器、９……振幅検出器。
FIG. 1 is a block diagram of an embodiment of a demodulator having an automatic gain control circuit according to the present invention, FIG. 2 shows the spectrum of input and output signals of the modulator 7 in FIG. 1, and FIG. Figure 2b shows the spectrum after the modulator 7 inversely modulates the PSK signal. , that is, a diagram showing the spectrum of a reproduced carrier wave. 1...bandwidth wave generator, 2...automatic gain controller, 3
... Demodulator, 4 ... Amplitude detector, 5 ... Changeover switch, 6 ... Delay line, 7 ... Modulator, 8 ... Narrowband wave generator, 9 ... Amplitude detector.
Claims (1)
相を一致させる遅延線と、 遅延されたＰＳＫ変調信号を復調データによつ
て逆変調を行なう変調器と、 この逆変調によつて再生された搬送波を抽出す
る狭帯域波器と、 この狭帯域波器の出力信号の電圧の振幅を検
出する第１の振幅検出器と、 自動利得制御器の出力端に接続された第２の振
幅検出器と、 復調器から復調データが出力されている場合に
は第１の振幅検出器の出力電圧を、復調データが
出力されていない場合には第２の振幅検出器の出
力電圧を自動利得制御器に制御電圧として出力す
る切替スイツチとを有する自動利得制御回路。[Claims for Utility Model Registration] A demodulation device that demodulates a PSK signal, comprising: an automatic gain controller; a delay line that delays the PSK modulation signal to match the phase with demodulated data; A modulator that performs inverse modulation using demodulated data, a narrowband waveform generator that extracts the carrier wave regenerated by this inverse modulation, and a first waveform generator that detects the voltage amplitude of the output signal of the narrowband waveform generator. an amplitude detector; a second amplitude detector connected to the output terminal of the automatic gain controller; an automatic gain control circuit having a changeover switch that outputs the output voltage of the second amplitude detector as a control voltage to the automatic gain controller when the second amplitude detector is not output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17383885U JPS6284241U (en) | 1985-11-11 | 1985-11-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17383885U JPS6284241U (en) | 1985-11-11 | 1985-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6284241U true JPS6284241U (en) | 1987-05-29 |
Family
ID=31111674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17383885U Pending JPS6284241U (en) | 1985-11-11 | 1985-11-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6284241U (en) |
-
1985
- 1985-11-11 JP JP17383885U patent/JPS6284241U/ja active Pending
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