JPS55140306A - Fm am direct converter - Google Patents

Fm am direct converter

Info

Publication number
JPS55140306A
JPS55140306A JP4825779A JP4825779A JPS55140306A JP S55140306 A JPS55140306 A JP S55140306A JP 4825779 A JP4825779 A JP 4825779A JP 4825779 A JP4825779 A JP 4825779A JP S55140306 A JPS55140306 A JP S55140306A
Authority
JP
Japan
Prior art keywords
output
supplied
multiplier
adder
wave
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
JP4825779A
Other languages
Japanese (ja)
Inventor
Etsuya Nigo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4825779A priority Critical patent/JPS55140306A/en
Publication of JPS55140306A publication Critical patent/JPS55140306A/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
    • H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
    • H03D3/241—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To make it possible to enlarge a threshold margin by using the phase synchronizing loop with an AM modulating function added. CONSTITUTION:An FM wave is input to multiplier 9, and the output is branched and is supplied to adder 16 through LPF10, buffer 11 and level adjusting equipment 15. In adder 16, the output above is added to the output of voltage control oscillating circuit 13 and is supplied to multiplier 9 and is multiplied, and the converted AM wave is output through BPF17 at terminal 8. The output of buffer amplifier 11 is supplied to loop filter 12, and oscillator 13 is controlled by the output. Thus, the threshold margin can be enlarged and a good-characteristic FM.AM direct converter can be obtained by adding the AM modulating function to the phase synchronizing loop.
JP4825779A 1979-04-18 1979-04-18 Fm am direct converter Pending JPS55140306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4825779A JPS55140306A (en) 1979-04-18 1979-04-18 Fm am direct converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4825779A JPS55140306A (en) 1979-04-18 1979-04-18 Fm am direct converter

Publications (1)

Publication Number Publication Date
JPS55140306A true JPS55140306A (en) 1980-11-01

Family

ID=12798384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4825779A Pending JPS55140306A (en) 1979-04-18 1979-04-18 Fm am direct converter

Country Status (1)

Country Link
JP (1) JPS55140306A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003502977A (en) * 1999-06-17 2003-01-21 マルコニ データ システムズ リミテッド Super-regenerative AM demodulator
JP2007312728A (en) * 2006-05-29 2007-12-06 Mitsubishi Agricult Mach Co Ltd Coupling device for implement of working vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003502977A (en) * 1999-06-17 2003-01-21 マルコニ データ システムズ リミテッド Super-regenerative AM demodulator
JP2007312728A (en) * 2006-05-29 2007-12-06 Mitsubishi Agricult Mach Co Ltd Coupling device for implement of working vehicle

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