JPH01100548U - - Google Patents
Info
- Publication number
- JPH01100548U JPH01100548U JP19573687U JP19573687U JPH01100548U JP H01100548 U JPH01100548 U JP H01100548U JP 19573687 U JP19573687 U JP 19573687U JP 19573687 U JP19573687 U JP 19573687U JP H01100548 U JPH01100548 U JP H01100548U
- Authority
- JP
- Japan
- Prior art keywords
- filter
- roll
- sampling frequency
- psk demodulator
- phase detection
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
第１図は本考案の一実施例の回路ブロツク図、
第２図は対応する従来例の回路ブロツク図である
。
１……Ａ／Ｄ変換器、２……ロールオフフイル
タ、３，７……位相検波回路、４，８……低域フ
イルタ、５，９……復調信号、６，１０……識別
回路、１８……再生基準搬送波、２０……搬送波
再生回路、２１，２２……ロールオフフイルタ。
FIG. 1 is a circuit block diagram of an embodiment of the present invention.
FIG. 2 is a circuit block diagram of a corresponding conventional example. 1... A/D converter, 2... Roll-off filter, 3, 7... Phase detection circuit, 4, 8... Low-pass filter, 5, 9... Demodulation signal, 6, 10... Identification circuit, 18... Reproduction reference carrier wave, 20... Carrier wave regeneration circuit, 21, 22... Roll-off filter.
Claims (1)
フイルタを位相検波回路後に設け、該ロールオフ
フイルタのサンプリング周波数を、変調速度の２
倍を最低として、システムサンプリング周波数よ
り低くとることを特徴とするＰＳＫ復調器。 In a digital PSK demodulator, a roll-off filter is provided after the phase detection circuit, and the sampling frequency of the roll-off filter is set to 2 times the modulation rate.
A PSK demodulator characterized in that the minimum multiplier is lower than the system sampling frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19573687U JPH01100548U (en) | 1987-12-25 | 1987-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19573687U JPH01100548U (en) | 1987-12-25 | 1987-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01100548U true JPH01100548U (en) | 1989-07-06 |
Family
ID=31486396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19573687U Pending JPH01100548U (en) | 1987-12-25 | 1987-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01100548U (en) |
-
1987
- 1987-12-25 JP JP19573687U patent/JPH01100548U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS60127019U (en) | Phase modulation signal demodulation circuit | |
| JPS63181153U (en) | ||
| JPS63147040U (en) | ||
| JPS61167057U (en) | ||
| JPS58104043U (en) | Demodulation circuit | |
| JPS62196423U (en) | ||
| JPH01129935U (en) | ||
| JPS6280450U (en) | ||
| JPH01129911U (en) | ||
| JPS6118658U (en) | Synchronous detection circuit | |
| JPS61100089U (en) | ||
| JPS6181236U (en) | ||
| JPS6179872U (en) | ||
| JPS61146013U (en) | ||
| JPS59127318U (en) | phase control circuit | |
| JPS6221615U (en) | ||
| JPS63181073U (en) | ||
| JPS60132056U (en) | optical analog receiver | |
| JPS58114671U (en) | Audio beat reduction circuit | |
| JPS61131118U (en) | ||
| JPS6338436U (en) | ||
| JPS61146014U (en) | ||
| JPS6277463U (en) | ||
| JPS5883844U (en) | FM receiver | |
| JPS6162449U (en) |