JPS56160109A - Fm demodulating circuit - Google Patents

Fm demodulating circuit

Info

Publication number
JPS56160109A
JPS56160109A JP5325580A JP5325580A JPS56160109A JP S56160109 A JPS56160109 A JP S56160109A JP 5325580 A JP5325580 A JP 5325580A JP 5325580 A JP5325580 A JP 5325580A JP S56160109 A JPS56160109 A JP S56160109A
Authority
JP
Japan
Prior art keywords
signal
intermediate frequency
supplied
circuit
frequency 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.)
Pending
Application number
JP5325580A
Other languages
Japanese (ja)
Inventor
Yamato Okashin
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP5325580A priority Critical patent/JPS56160109A/en
Publication of JPS56160109A publication Critical patent/JPS56160109A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/22—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of active elements with more than two electrodes to which two signals are applied derived from the signal to be demodulated and having a phase difference related to the frequency deviation, e.g. phase detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To avoid the impairment of linearity, by supplying an FM signal between the contents of one side that opposite to a bridge circuit and performing a demodulation of the FM signal through an operation of the FM signal and the signal obtained between the opposite contents of the other side. CONSTITUTION:An FM intermediate frequency signal supplied from an intermediate frequency amplifier 1 is supplied to a bridge circuit 3 through a differential amplifier 2 and then transistors (TRs) Q5 and Q6 to obtain an intermediate frequency signal. The output signal is supplied to a multiplying circuit 5 through a differential amplifier 4, and at the same time the intermediate frequency signals supplied from TRs Q4 and Q5 and having no phase shift are supplied to the circuit 5. Thus a multiplication is carried out at the circuit 5 between the intermediate frequency signal and the phase-shifted intermediate frequency signal to perform an FM modulation. The output of demodulation is extracted out of a filter 6.
JP5325580A 1980-04-22 1980-04-22 Fm demodulating circuit Pending JPS56160109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5325580A JPS56160109A (en) 1980-04-22 1980-04-22 Fm demodulating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5325580A JPS56160109A (en) 1980-04-22 1980-04-22 Fm demodulating circuit

Publications (1)

Publication Number Publication Date
JPS56160109A true JPS56160109A (en) 1981-12-09

Family

ID=12937670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5325580A Pending JPS56160109A (en) 1980-04-22 1980-04-22 Fm demodulating circuit

Country Status (1)

Country Link
JP (1) JPS56160109A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62245707A (en) * 1986-04-17 1987-10-27 Rohm Co Ltd Fm demodulation circuit
JPS62292005A (en) * 1986-06-11 1987-12-18 Matsushita Electric Ind Co Ltd Fm demodulation circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62245707A (en) * 1986-04-17 1987-10-27 Rohm Co Ltd Fm demodulation circuit
JP2580122B2 (en) * 1986-04-17 1997-02-12 ロ−ム株式会社 FM demodulation circuit
JPS62292005A (en) * 1986-06-11 1987-12-18 Matsushita Electric Ind Co Ltd Fm demodulation circuit

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