JPS5883814U - frequency demodulator - Google Patents
frequency demodulatorInfo
- Publication number
- JPS5883814U JPS5883814U JP17949181U JP17949181U JPS5883814U JP S5883814 U JPS5883814 U JP S5883814U JP 17949181 U JP17949181 U JP 17949181U JP 17949181 U JP17949181 U JP 17949181U JP S5883814 U JPS5883814 U JP S5883814U
- Authority
- JP
- Japan
- Prior art keywords
- frequency demodulator
- signal wave
- circuit
- limiter
- limiter circuit
- 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
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Signal Processing For Digital Recording And Reproducing (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図は、従来のカウンタ形の周波数復調器のブロック
回路図、第２図は第１図の各ブロックの波形図、第３図
は遅延回路の遅延特性図、第４図はこの考案の周波数復
調器のブロック回路図である。
図中、１１は第１のリミッタ回路、１２は遅延回路、１
３は第２のリミッタ回路、１４は排他的論理和回路、１
５はローパスフィルタを示す。Figure 1 is a block circuit diagram of a conventional counter-type frequency demodulator, Figure 2 is a waveform diagram of each block in Figure 1, Figure 3 is a delay characteristic diagram of a delay circuit, and Figure 4 is a diagram of this invention. FIG. 2 is a block circuit diagram of a frequency demodulator. In the figure, 11 is a first limiter circuit, 12 is a delay circuit, 1
3 is a second limiter circuit, 14 is an exclusive OR circuit, 1
5 indicates a low pass filter.
Claims (1)
て、復調すべきＦＭ信号波の振幅を制限する第１のリミ
ッタ回路と、前記ＦＭ信号波を遅延する遅延回路の出力
を振幅制限する第２のリミッタ回路を設け、前記第１及
び第２のリミッタ回路の出力から微分パルスを形成する
ようにしたことを特徴とする周波数復調器。A counter-type frequency demodulator that demodulates an FM signal wave includes a first limiter circuit that limits the amplitude of the FM signal wave to be demodulated, and a second limiter circuit that limits the amplitude of the output of the delay circuit that delays the FM signal wave. A frequency demodulator, characterized in that a limiter circuit is provided, and a differential pulse is formed from the outputs of the first and second limiter circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17949181U JPS5883814U (en) | 1981-12-03 | 1981-12-03 | frequency demodulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17949181U JPS5883814U (en) | 1981-12-03 | 1981-12-03 | frequency demodulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5883814U true JPS5883814U (en) | 1983-06-07 |
| JPH0336094Y2 JPH0336094Y2 (en) | 1991-07-31 |
Family
ID=29975235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17949181U Granted JPS5883814U (en) | 1981-12-03 | 1981-12-03 | frequency demodulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5883814U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53122351A (en) * | 1977-04-01 | 1978-10-25 | Hitachi Ltd | Generating circuit for double frequency signal |
| JPS5520418A (en) * | 1978-07-29 | 1980-02-13 | Matsushita Electric Works Ltd | Signal processing circuit of light ray-system detector |
-
1981
- 1981-12-03 JP JP17949181U patent/JPS5883814U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53122351A (en) * | 1977-04-01 | 1978-10-25 | Hitachi Ltd | Generating circuit for double frequency signal |
| JPS5520418A (en) * | 1978-07-29 | 1980-02-13 | Matsushita Electric Works Ltd | Signal processing circuit of light ray-system detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0336094Y2 (en) | 1991-07-31 |
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