GB2313000B - Frequency modulation using a phase-locked loop - Google Patents

Frequency modulation using a phase-locked loop

Info

Publication number
GB2313000B
GB2313000B GB9609465A GB9609465A GB2313000B GB 2313000 B GB2313000 B GB 2313000B GB 9609465 A GB9609465 A GB 9609465A GB 9609465 A GB9609465 A GB 9609465A GB 2313000 B GB2313000 B GB 2313000B
Authority
GB
United Kingdom
Prior art keywords
phase
locked loop
frequency modulation
modulation
locked
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.)
Expired - Fee Related
Application number
GB9609465A
Other versions
GB2313000A (en
GB9609465D0 (en
Inventor
Klaus Joergensen
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.)
Nokia Oyj
Original Assignee
Nokia Mobile Phones 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 Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Priority to GB9609465A priority Critical patent/GB2313000B/en
Publication of GB9609465D0 publication Critical patent/GB9609465D0/en
Publication of GB2313000A publication Critical patent/GB2313000A/en
Application granted granted Critical
Publication of GB2313000B publication Critical patent/GB2313000B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0966—Modifications of modulator for regulating the mean frequency using a phase locked loop modulating the reference clock
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/095—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation to the loop in front of the voltage controlled oscillator
    • 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
    • H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
    • H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB9609465A 1996-05-07 1996-05-07 Frequency modulation using a phase-locked loop Expired - Fee Related GB2313000B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9609465A GB2313000B (en) 1996-05-07 1996-05-07 Frequency modulation using a phase-locked loop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9609465A GB2313000B (en) 1996-05-07 1996-05-07 Frequency modulation using a phase-locked loop

Publications (3)

Publication Number Publication Date
GB9609465D0 GB9609465D0 (en) 1996-07-10
GB2313000A GB2313000A (en) 1997-11-12
GB2313000B true GB2313000B (en) 2000-10-25

Family

ID=10793277

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9609465A Expired - Fee Related GB2313000B (en) 1996-05-07 1996-05-07 Frequency modulation using a phase-locked loop

Country Status (1)

Country Link
GB (1) GB2313000B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19920307A1 (en) * 1999-05-03 2000-11-16 St Microelectronics Gmbh Electrical circuit for controlling a load

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983004148A1 (en) * 1982-05-14 1983-11-24 Motorola, Inc. Pulse adding and subtracting circuit controlled by digital data
GB2160037A (en) * 1984-05-25 1985-12-11 Multitone Electronics Plc Phase locked loop circuits
EP0209754A2 (en) * 1985-07-15 1987-01-28 Motorola, Inc. Two-part synthesizer modulation system using a reference phase modulator
US5130676A (en) * 1991-09-06 1992-07-14 Motorola, Inc. Phase locked loop frequency synthesizer with DC data modulation capability

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983004148A1 (en) * 1982-05-14 1983-11-24 Motorola, Inc. Pulse adding and subtracting circuit controlled by digital data
GB2160037A (en) * 1984-05-25 1985-12-11 Multitone Electronics Plc Phase locked loop circuits
EP0209754A2 (en) * 1985-07-15 1987-01-28 Motorola, Inc. Two-part synthesizer modulation system using a reference phase modulator
US5130676A (en) * 1991-09-06 1992-07-14 Motorola, Inc. Phase locked loop frequency synthesizer with DC data modulation capability

Also Published As

Publication number Publication date
GB2313000A (en) 1997-11-12
GB9609465D0 (en) 1996-07-10

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050507