JPS5498167A - Fm demodulation device - Google Patents

Fm demodulation device

Info

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
Application number
JP495578A
Other languages
Japanese (ja)
Other versions
JPS6255321B2 (en
Inventor
Shigetoshi Suzuki
Yasuo Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP495578A priority Critical patent/JPS5498167A/en
Publication of JPS5498167A publication Critical patent/JPS5498167A/en
Publication of JPS6255321B2 publication Critical patent/JPS6255321B2/ja
Granted legal-status Critical Current

Links

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  • 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
JP495578A 1978-01-20 1978-01-20 Fm demodulation device Granted JPS5498167A (en)

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)

Also Published As

Publication number Publication date
JPS6255321B2 (en) 1987-11-19

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