AU6643790A - Digital circuit for a frequency modulation and carrier synthesis in a digital radio system - Google Patents

Digital circuit for a frequency modulation and carrier synthesis in a digital radio system

Info

Publication number
AU6643790A
AU6643790A AU66437/90A AU6643790A AU6643790A AU 6643790 A AU6643790 A AU 6643790A AU 66437/90 A AU66437/90 A AU 66437/90A AU 6643790 A AU6643790 A AU 6643790A AU 6643790 A AU6643790 A AU 6643790A
Authority
AU
Australia
Prior art keywords
digital
frequency modulation
radio system
carrier synthesis
digital circuit
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.)
Abandoned
Application number
AU66437/90A
Inventor
Roger Reed
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of AU6643790A publication Critical patent/AU6643790A/en
Abandoned 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
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
    • H03L7/1974—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
AU66437/90A 1989-11-09 1990-10-18 Digital circuit for a frequency modulation and carrier synthesis in a digital radio system Abandoned AU6643790A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43480289A 1989-11-09 1989-11-09
US434802 1989-11-09

Publications (1)

Publication Number Publication Date
AU6643790A true AU6643790A (en) 1991-06-13

Family

ID=23725770

Family Applications (1)

Application Number Title Priority Date Filing Date
AU66437/90A Abandoned AU6643790A (en) 1989-11-09 1990-10-18 Digital circuit for a frequency modulation and carrier synthesis in a digital radio system

Country Status (2)

Country Link
AU (1) AU6643790A (en)
WO (1) WO1991007828A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI89845C (en) * 1991-09-04 1993-11-25 Nokia Mobile Phones Ltd Connection for generating broadcast signal in a radio telephone
FI102798B1 (en) * 1992-07-28 1999-02-15 Nokia Mobile Phones Ltd Circuit device in the radio frequency section of a digital mobile phone
US6094101A (en) * 1999-03-17 2000-07-25 Tropian, Inc. Direct digital frequency synthesis enabling spur elimination
GB2379106B (en) * 2001-08-24 2003-07-09 Roke Manor Research Improvements in or relating to fast frequency-hopping demodulators
US7302237B2 (en) 2002-07-23 2007-11-27 Mercury Computer Systems, Inc. Wideband signal generators, measurement devices, methods of signal generation, and methods of signal analysis
US7327816B2 (en) 2003-12-23 2008-02-05 Teradyne Inc. High resolution synthesizer with improved signal purity
US10602548B2 (en) * 2017-06-22 2020-03-24 Infineon Technologies Ag System and method for gesture sensing
CN108512549A (en) * 2018-06-07 2018-09-07 贵州航天天马机电科技有限公司 A kind of Frequency Hopping Synthesizer
CN114285434A (en) * 2022-01-25 2022-04-05 北京允芯微电子有限公司 System on chip for wireless audio transmission

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922697B2 (en) * 1976-01-13 1984-05-28 エーザイ株式会社 Bis-(meta-amidinophenoxy)-compound
US4206425A (en) * 1978-08-29 1980-06-03 Rca Corporation Digitized frequency synthesizer
US4490688A (en) * 1981-04-06 1984-12-25 Motorola, Inc. Digital and analog phase detector for a frequency synthesizer
US4679098A (en) * 1982-09-17 1987-07-07 Ampex Corporation Video tape transport servo for variable tape speed control
US4825448A (en) * 1986-08-07 1989-04-25 International Mobile Machines Corporation Subscriber unit for wireless digital telephone system
FR2618625B1 (en) * 1987-07-24 1989-11-24 Labo Electronique Physique DEVICE FOR IMPROVING THE DECODING OF DIGITAL SIGNALS DURING FREQUENCY MODULATION TRANSMISSIONS

Also Published As

Publication number Publication date
WO1991007828A1 (en) 1991-05-30

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