JPS57168559A - Device for modulated signal having deviated phase - Google Patents

Device for modulated signal having deviated phase

Info

Publication number
JPS57168559A
JPS57168559A JP5076576A JP5076576A JPS57168559A JP S57168559 A JPS57168559 A JP S57168559A JP 5076576 A JP5076576 A JP 5076576A JP 5076576 A JP5076576 A JP 5076576A JP S57168559 A JPS57168559 A JP S57168559A
Authority
JP
Japan
Prior art keywords
phase
signal
carrier wave
circuit
bpf4
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
JP5076576A
Other languages
Japanese (ja)
Inventor
Noriaki Kondo
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 JP5076576A priority Critical patent/JPS57168559A/en
Publication of JPS57168559A publication Critical patent/JPS57168559A/en
Pending 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
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2272—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals using phase locked loops

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 deliver the signal having good carrier wave reproducing characteristics with a simple constitution of circuit without using any complicated circuit, by using a phase modulator which is capable of the modulation of phase with a code signal of a low level. CONSTITUTION:A modulating part includes an Esaki diode pair circuit 3 using the outputs of an LPF2 and a phase shifter 8 for the input and a BPF4. The circuit 3 contains a transformer T for phase inversion of carrier wave, carrier wave driving resistors R1-R4, a code signal driving resistor R5, a load resistor R6 for output plus Esaki diodes ED1 and ED2. The code signal is applied to a common joint of the diodes ED1 and ED2 via a BPF4, and the carrier wave of adverse phase is applied across these diodes each. Thus the positive or negative pulse signal is delivered from the common joint. This signal is turned into another signal which is obtained by the phase deviated modulation carried out through the BPF4 to be applied to a phase wave detector 5 that uses the received signal G for the input. Then a VCO7 is controlled via a loop filter 6 to deliver the reproduced signal Q.
JP5076576A 1976-05-06 1976-05-06 Device for modulated signal having deviated phase Pending JPS57168559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5076576A JPS57168559A (en) 1976-05-06 1976-05-06 Device for modulated signal having deviated phase

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5076576A JPS57168559A (en) 1976-05-06 1976-05-06 Device for modulated signal having deviated phase

Publications (1)

Publication Number Publication Date
JPS57168559A true JPS57168559A (en) 1982-10-16

Family

ID=12867921

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5076576A Pending JPS57168559A (en) 1976-05-06 1976-05-06 Device for modulated signal having deviated phase

Country Status (1)

Country Link
JP (1) JPS57168559A (en)

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