JPS57162562A - Delay wave detecting circuit - Google Patents

Delay wave detecting circuit

Info

Publication number
JPS57162562A
JPS57162562A JP56047906A JP4790681A JPS57162562A JP S57162562 A JPS57162562 A JP S57162562A JP 56047906 A JP56047906 A JP 56047906A JP 4790681 A JP4790681 A JP 4790681A JP S57162562 A JPS57162562 A JP S57162562A
Authority
JP
Japan
Prior art keywords
delay
signal
frequency
detecting circuit
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.)
Granted
Application number
JP56047906A
Other languages
Japanese (ja)
Other versions
JPS6338141B2 (en
Inventor
Yutaka Koizumi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56047906A priority Critical patent/JPS57162562A/en
Publication of JPS57162562A publication Critical patent/JPS57162562A/en
Publication of JPS6338141B2 publication Critical patent/JPS6338141B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2331—Demodulator circuits; Receiver circuits using non-coherent demodulation wherein the received signal is demodulated using one or more delayed versions of itself

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To obtain a delay wave detecting circuit without being affected with the fluctuation of carrier frequency, by controlling the output phase of a delay circuit of the delay wave detecting circuit according to the frequency of an input signal. CONSTITUTION:The input digital modulated wave is divided into three parts by a signal branching circuit 1. The 1st output signal b1 is led to a phase wave detector 1; the 2nd outut signal b2 is led to the detector 1 through a delay circuit 3 that gives a delay of 10 seconds and a variable phase shifter 5; and the 3rd branched output b3 is X-multiplied by a multiplying device 6 and receives the discrimination of frequency through a frequency discriminator 6 after the elimination of the modulated signal component. The phase shift degree of the phase shifter 5 is controlled by the control signal given from the discriminator 6.
JP56047906A 1981-03-30 1981-03-30 Delay wave detecting circuit Granted JPS57162562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56047906A JPS57162562A (en) 1981-03-30 1981-03-30 Delay wave detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56047906A JPS57162562A (en) 1981-03-30 1981-03-30 Delay wave detecting circuit

Publications (2)

Publication Number Publication Date
JPS57162562A true JPS57162562A (en) 1982-10-06
JPS6338141B2 JPS6338141B2 (en) 1988-07-28

Family

ID=12788419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56047906A Granted JPS57162562A (en) 1981-03-30 1981-03-30 Delay wave detecting circuit

Country Status (1)

Country Link
JP (1) JPS57162562A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60260594A (en) * 1984-05-21 1985-12-23 ザ・ソーク・インステチュート・フォー・バイオロジカル・スタディーズ Gnrh antagonistic substance
JPH03226147A (en) * 1990-01-31 1991-10-07 Mitsubishi Electric Corp Delay detection circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60260594A (en) * 1984-05-21 1985-12-23 ザ・ソーク・インステチュート・フォー・バイオロジカル・スタディーズ Gnrh antagonistic substance
JPH03226147A (en) * 1990-01-31 1991-10-07 Mitsubishi Electric Corp Delay detection circuit

Also Published As

Publication number Publication date
JPS6338141B2 (en) 1988-07-28

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