JPS5498167A - Fm demodulation device - Google Patents
Fm demodulation deviceInfo
- Publication number
- JPS5498167A JPS5498167A JP495578A JP495578A JPS5498167A JP S5498167 A JPS5498167 A JP S5498167A JP 495578 A JP495578 A JP 495578A JP 495578 A JP495578 A JP 495578A JP S5498167 A JPS5498167 A JP S5498167A
- Authority
- JP
- Japan
- Prior art keywords
- wave
- frequency
- undesired
- detector
- signal
- 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
- Noise Elimination (AREA)
Abstract
PURPOSE: To regenerate FM demodulation while undesired waves are existing by installing AM detector and extracting the portion of amplitude modulation in mixed modulated wave of desired wave and undesired wave.
CONSTITUTION: When the desired wave, i.e., the frequency modulated wae applied to input terminal 1 is P and the carrier frequency is fb, the sine wave signal of frequency P can be obtained as an output of phase discriminator 3. This sine wave signal passes through AM detector 4 and BPF 5 through which only frequency P passes and is led out at output terminal 6 as the sine wave demodulation signal. Since the amplitude demodulated portion of mix-modulated wave consisting of the desired wave and undesired wave is extracted from the output of discriminator 3 by detector 4, the demodulated signal of frequency P with less suppressing effect can be regenerated from terminal 6 even when desired wave and undesired wave are existing simultaneously.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP495578A JPS5498167A (en) | 1978-01-20 | 1978-01-20 | Fm demodulation device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP495578A JPS5498167A (en) | 1978-01-20 | 1978-01-20 | Fm demodulation device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5498167A true JPS5498167A (en) | 1979-08-02 |
JPS6255321B2 JPS6255321B2 (en) | 1987-11-19 |
Family
ID=11597990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP495578A Granted JPS5498167A (en) | 1978-01-20 | 1978-01-20 | Fm demodulation device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5498167A (en) |
-
1978
- 1978-01-20 JP JP495578A patent/JPS5498167A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6255321B2 (en) | 1987-11-19 |
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