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JPS5662407A - Phase modulating circuit - Google Patents

Phase modulating circuit

Info

Publication number
JPS5662407A
JPS5662407A JP13776379A JP13776379A JPS5662407A JP S5662407 A JPS5662407 A JP S5662407A JP 13776379 A JP13776379 A JP 13776379A JP 13776379 A JP13776379 A JP 13776379A JP S5662407 A JPS5662407 A JP S5662407A
Authority
JP
Japan
Prior art keywords
signal
output
modulator
amplitude
phase
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
JP13776379A
Other languages
Japanese (ja)
Inventor
Tetsuo Yoshida
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP13776379A priority Critical patent/JPS5662407A/en
Publication of JPS5662407A publication Critical patent/JPS5662407A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation

Landscapes

  • Amplitude Modulation (AREA)

Abstract

PURPOSE:To keep constant the output, by feeding back the signal corresponding to the amplitude of a modulation output signal to a modulator. CONSTITUTION:A carrier is converted into a signal different from the phase by 90 deg. at a phase shifter 33, one is amplitude-modulated with a modulation signal at a balanced modulator 34, and another is amplitude-modulated with a DC control signal at an AM modulator 35. The signals amplitude-modulated from the both modulators are synthesized at an adder 36, and the result is output as a phase modulation signal. The DC control signal is obtained by amplifying the signal from a phase modulation signal detected at a linear detector 37 at a DC amplifier 38. When an output of the balanced modulator 34 is at ''0'', the output of the AM modulator 35 is controlled so that it can be equal to the maximum amplitude of the balanced modulator 34. Thus, output can be made not to change the phase modulation signal.
JP13776379A 1979-10-26 1979-10-26 Phase modulating circuit Pending JPS5662407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13776379A JPS5662407A (en) 1979-10-26 1979-10-26 Phase modulating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13776379A JPS5662407A (en) 1979-10-26 1979-10-26 Phase modulating circuit

Publications (1)

Publication Number Publication Date
JPS5662407A true JPS5662407A (en) 1981-05-28

Family

ID=15206254

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13776379A Pending JPS5662407A (en) 1979-10-26 1979-10-26 Phase modulating circuit

Country Status (1)

Country Link
JP (1) JPS5662407A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02159136A (en) * 1988-12-12 1990-06-19 Nippon Telegr & Teleph Corp <Ntt> Am stereo transmitter and receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02159136A (en) * 1988-12-12 1990-06-19 Nippon Telegr & Teleph Corp <Ntt> Am stereo transmitter and receiver

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