IT1141536B - Modulatore di frequenza - Google Patents

Modulatore di frequenza

Info

Publication number
IT1141536B
IT1141536B IT21251/80A IT2125180A IT1141536B IT 1141536 B IT1141536 B IT 1141536B IT 21251/80 A IT21251/80 A IT 21251/80A IT 2125180 A IT2125180 A IT 2125180A IT 1141536 B IT1141536 B IT 1141536B
Authority
IT
Italy
Prior art keywords
frequency modulator
modulator
frequency
Prior art date
Application number
IT21251/80A
Other languages
English (en)
Other versions
IT8021251A0 (it
Inventor
Bernd Sommer
Peter Baier
Karl Knapp
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of IT8021251A0 publication Critical patent/IT8021251A0/it
Application granted granted Critical
Publication of IT1141536B publication Critical patent/IT1141536B/it

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
    • 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
    • H03C3/0916—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop
    • H03C3/0925—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop applying frequency modulation at the divider in the feedback loop
    • 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
    • H03C3/0941—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation at more than one point in the loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
    • H03C2200/0037—Functional aspects of modulators
    • H03C2200/0075—FM modulation down to DC

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmitters (AREA)
IT21251/80A 1979-04-11 1980-04-09 Modulatore di frequenza IT1141536B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792914814 DE2914814A1 (de) 1979-04-11 1979-04-11 Frequenzmodulator

Publications (2)

Publication Number Publication Date
IT8021251A0 IT8021251A0 (it) 1980-04-09
IT1141536B true IT1141536B (it) 1986-10-01

Family

ID=6068147

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21251/80A IT1141536B (it) 1979-04-11 1980-04-09 Modulatore di frequenza

Country Status (12)

Country Link
US (1) US4308508A (it)
JP (1) JPS55140305A (it)
BE (1) BE882756A (it)
CA (1) CA1158324A (it)
CH (1) CH652879A5 (it)
DE (1) DE2914814A1 (it)
FR (1) FR2454219B1 (it)
GB (1) GB2046541B (it)
IL (1) IL59799A (it)
IT (1) IT1141536B (it)
NL (1) NL8002148A (it)
SE (1) SE8002675L (it)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3015484A1 (de) * 1980-04-22 1981-10-29 Siemens AG, 1000 Berlin und 8000 München Verfahren zur frequenzstabilisierung eines hochfrequenten freischwingenden oszillators
EP0050124A4 (en) * 1980-05-01 1982-09-03 Gen Electric ARRANGEMENT FOR FREQUENCY MODULATION OF A FREQUENCY SYNTHESISER WITH A PHASE-FREE LOOP.
US4481489A (en) * 1981-07-02 1984-11-06 Motorola Inc. Binary signal modulating circuitry for frequency modulated transmitters
FR2511564A1 (fr) * 1981-08-17 1983-02-18 Thomson Csf Synthetiseur de frequences a division fractionnaire, utilise pour une modulation angulaire numerique
JPS58125940A (ja) * 1982-01-21 1983-07-27 Matsushita Electric Ind Co Ltd マイクロ波変調回路
JPS58186249A (ja) * 1982-04-23 1983-10-31 Nippon Telegr & Teleph Corp <Ntt> 自動周波数制御方式
GB8313616D0 (en) * 1983-05-17 1983-06-22 Marconi Instruments Ltd Signal generators
GB2140234B (en) * 1983-05-17 1986-07-23 Marconi Instruments Ltd Signal generators
US4562414A (en) * 1983-12-27 1985-12-31 Motorola, Inc. Digital frequency modulation system and method
DE3716061C2 (de) * 1987-05-14 1997-01-23 Daimler Benz Aerospace Ag Modulator zur Erzeugung eines frequenzmodulierten HF-Signals
US4810977A (en) * 1987-12-22 1989-03-07 Hewlett-Packard Company Frequency modulation in phase-locked loops
EP0332087A1 (de) * 1988-03-09 1989-09-13 Siemens Aktiengesellschaft Frequenzmodulator
GB8915719D0 (en) * 1989-07-08 1989-08-31 Plessey Co Plc Wide bandwidth direct synthesiser modulation
DE69026151T2 (de) * 1989-07-08 1996-08-22 Plessey Semiconductors Ltd Frequenzsynthesizer
GB2237157A (en) * 1989-10-20 1991-04-24 Marconi Instruments Ltd Control of frequency modulators
GB2282284B (en) * 1993-09-28 1998-01-21 Plessey Semiconductors Ltd Modulators
GB2317512B (en) * 1996-09-12 2001-01-24 Nokia Mobile Phones Ltd Frequency modulation using a phase-locked loop
US6028411A (en) * 1997-01-29 2000-02-22 Seagate Technology, Inc. Circuit and method for modulating the commutation frequency of a disc drive motor
KR20000070597A (ko) * 1997-01-29 2000-11-25 시게이트 테크놀로지 엘엘씨 정류 각도를 변조시켜 디스크 구동부내의 모터를 제어하기 위한 방법 및 장치
US6658239B1 (en) * 1997-05-09 2003-12-02 Micrel Incorporated Fully integrated ALL-CMOS AM transmitter with automatic antenna tuning
US6253068B1 (en) * 1997-05-09 2001-06-26 Micrel, Incorporated Fully integrated all-CMOS AM transmitter with automatic antenna tuning
EP0961412B1 (en) * 1998-05-29 2004-10-06 Motorola Semiconducteurs S.A. Frequency synthesiser
CA2281522C (en) 1999-09-10 2004-12-07 Philsar Electronics Inc. Delta-sigma based two-point angle modulation scheme
GB0218166D0 (en) * 2002-08-06 2002-09-11 Mbda Uk Ltd Waveform lineariser
US6909331B2 (en) * 2002-08-28 2005-06-21 Qualcomm Incorporated Phase locked loop having a forward gain adaptation module
US6670861B1 (en) * 2002-08-29 2003-12-30 Analog Devices, Inc. Method of modulation gain calibration and system thereof
US7706495B2 (en) * 2004-03-12 2010-04-27 Panasonic Corporation Two-point frequency modulation apparatus
US7215215B2 (en) * 2004-03-15 2007-05-08 Matsushita Electric Industrial Co., Ltd. Phase modulation apparatus, polar modulation transmission apparatus, wireless transmission apparatus and wireless communication apparatus
JP2007221773A (ja) 2006-01-19 2007-08-30 Matsushita Electric Ind Co Ltd Ｐｌｌ変調回路、無線送信装置及び無線通信装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1594611A (it) * 1968-09-30 1970-06-08
DE2055998C3 (de) * 1970-11-13 1975-09-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Einrichtung zur Frequenzregelung eines Oszillators
US3805192A (en) * 1972-08-09 1974-04-16 Electronic Communications Frequency modulator-variable frequency generator
FR2250226A1 (en) * 1973-11-07 1975-05-30 Cit Alcatel Logic signal controlled frequency modulator - signals are applied to variable oscillator through digital analogue converter
FR2256582B1 (it) * 1973-12-27 1976-11-19 Trt Telecom Radio Electr
US4068199A (en) * 1976-12-23 1978-01-10 Gte Sylvania Incorporated Digital phase-locked loop frequency modulator
FR2382796A1 (fr) * 1977-03-03 1978-09-29 Adret Electronique Oscillateur module en frequence, comportant une boucle d'asservissement de phase dont l'action sur la modulation est compensee

Also Published As

Publication number Publication date
NL8002148A (nl) 1980-10-14
CA1158324A (en) 1983-12-06
GB2046541A (en) 1980-11-12
BE882756A (fr) 1980-10-13
GB2046541B (en) 1983-11-02
CH652879A5 (de) 1985-11-29
US4308508A (en) 1981-12-29
JPS55140305A (en) 1980-11-01
FR2454219B1 (fr) 1985-10-04
IL59799A0 (en) 1980-06-30
DE2914814C2 (it) 1988-01-07
FR2454219A1 (fr) 1980-11-07
DE2914814A1 (de) 1980-10-30
IT8021251A0 (it) 1980-04-09
IL59799A (en) 1982-07-30
SE8002675L (sv) 1980-10-12

Similar Documents

Publication Publication Date Title
IT1141536B (it) Modulatore di frequenza
FI781584A (fi) Foerbaettrad fraktbaerare
BR8404682A (pt) Modulador de frequencia de fizero
ATA36179A (de) Mikrohaertepruefer
FI802205A (fi) Matningsbrygga foer abonnentapparat
DK453980A (da) Frekvenssyntentesizer
FI802350A (fi) Vaetskeringtaetning
JPS55135212A (en) Frequency modulator
BR8008954A (pt) Novos mercaptoorganossiloxanos
IT1145353B (it) Caseinati di ologoelemento
FI811176L (fi) Foerfarande foer framstaellning av fluorenderivat
NL7902552A (nl) Frequentie-teller.
FI821956A0 (fi) Dubbelfrekvent tjuvalarmsystem
DK149320C (da) Hoejfrekvens-bredbaandsisolator
FI802535A (fi) Foerfarande foer framstaellning av 10-halogen-e-homo-eburnaner
AR227383A1 (es) Disposicion digital divisora de frecuencia
DK104780A (da) Hoejfrekvensgenerator
FI803134L (fi) Faskompenserad och -styrd oscillator
FI801056A (fi) Foerfarande foer framstaellning av 2-aminopyraziner
DE2953909A1 (de) Klystron
SE7806541L (sv) Modulator
BR8002409A (pt) Multiplicacao de frequencia
BR7906174A (pt) Modulador de frequencia
DE3062618D1 (de) Trapatt oscillator
DK123979A (da) Ompolingsmodulator