FR2320666A1 - PHASE MODULATOR - Google Patents

PHASE MODULATOR

Info

Publication number
FR2320666A1
FR2320666A1 FR7623790A FR7623790A FR2320666A1 FR 2320666 A1 FR2320666 A1 FR 2320666A1 FR 7623790 A FR7623790 A FR 7623790A FR 7623790 A FR7623790 A FR 7623790A FR 2320666 A1 FR2320666 A1 FR 2320666A1
Authority
FR
France
Prior art keywords
phase modulator
modulator
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
FR7623790A
Other languages
French (fr)
Other versions
FR2320666B1 (en
Inventor
Derrick William Baker
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of FR2320666A1 publication Critical patent/FR2320666A1/en
Application granted granted Critical
Publication of FR2320666B1 publication Critical patent/FR2320666B1/fr
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
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/206—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers
    • H04L27/2067—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states
    • H04L27/2071—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases using a pair of orthogonal carriers, e.g. quadrature carriers with more than two phase states in which the data are represented by the carrier phase, e.g. systems with differential coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
FR7623790A 1975-08-05 1976-08-04 PHASE MODULATOR Granted FR2320666A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3261275A GB1561643A (en) 1975-08-05 1975-08-05 Phaseshift-keying modulators

Publications (2)

Publication Number Publication Date
FR2320666A1 true FR2320666A1 (en) 1977-03-04
FR2320666B1 FR2320666B1 (en) 1981-11-20

Family

ID=10341343

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7623790A Granted FR2320666A1 (en) 1975-08-05 1976-08-04 PHASE MODULATOR

Country Status (3)

Country Link
FR (1) FR2320666A1 (en)
GB (1) GB1561643A (en)
IT (1) IT1070638B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378771A (en) * 1963-06-21 1968-04-16 Philips Corp Quadrature modulation pulse transmission system with improved pulse regeneration at receiver
US3378770A (en) * 1963-08-23 1968-04-16 Telecomm Radioelectriques & Te System for quadrature modulation of ternary signals with auxiliary oscillation for use in carrier regeneration at receiver
DE1487185A1 (en) * 1964-12-12 1969-01-09 Telefunken Patent Circuit arrangement for forming the phase sum in a data transmission system with quaternary phase difference keying

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378771A (en) * 1963-06-21 1968-04-16 Philips Corp Quadrature modulation pulse transmission system with improved pulse regeneration at receiver
US3378770A (en) * 1963-08-23 1968-04-16 Telecomm Radioelectriques & Te System for quadrature modulation of ternary signals with auxiliary oscillation for use in carrier regeneration at receiver
DE1487185A1 (en) * 1964-12-12 1969-01-09 Telefunken Patent Circuit arrangement for forming the phase sum in a data transmission system with quaternary phase difference keying

Also Published As

Publication number Publication date
DE2548241B2 (en) 1977-06-02
IT1070638B (en) 1985-04-02
FR2320666B1 (en) 1981-11-20
GB1561643A (en) 1980-02-27
DE2548241A1 (en) 1977-02-10

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Legal Events

Date Code Title Description
ST Notification of lapse