CA1201171A - Frequency modulation transmitter - Google Patents

Frequency modulation transmitter

Info

Publication number
CA1201171A
CA1201171A CA000418009A CA418009A CA1201171A CA 1201171 A CA1201171 A CA 1201171A CA 000418009 A CA000418009 A CA 000418009A CA 418009 A CA418009 A CA 418009A CA 1201171 A CA1201171 A CA 1201171A
Authority
CA
Canada
Prior art keywords
frequency
modulation
signal
level
voltage controlled
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
Application number
CA000418009A
Other languages
English (en)
French (fr)
Inventor
Masayuki Matsukura
Yukio Fukumura
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.)
NEC Corp
Original Assignee
Nippon Electric 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Application granted granted Critical
Publication of CA1201171A publication Critical patent/CA1201171A/en
Expired 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
    • H03C3/0958—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation by varying the characteristics of the voltage controlled oscillator
    • 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
    • H03C2200/005—Modulation sensitivity

Landscapes

  • Transmitters (AREA)
CA000418009A 1981-12-17 1982-12-17 Frequency modulation transmitter Expired CA1201171A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP204979/'81 1981-12-17
JP56204979A JPS58105631A (ja) 1981-12-17 1981-12-17 周波数変調送信機

Publications (1)

Publication Number Publication Date
CA1201171A true CA1201171A (en) 1986-02-25

Family

ID=16499455

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000418009A Expired CA1201171A (en) 1981-12-17 1982-12-17 Frequency modulation transmitter

Country Status (5)

Country Link
US (1) US4501019A (OSRAM)
EP (1) EP0082473A3 (OSRAM)
JP (1) JPS58105631A (OSRAM)
AU (1) AU565631B2 (OSRAM)
CA (1) CA1201171A (OSRAM)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4660182A (en) * 1984-06-20 1987-04-21 The Unites States Of America As Represented By The Secretary Of The Navy Programmable multichannel sonobuoy transmitter
JPS61156310U (OSRAM) * 1985-03-20 1986-09-27
JPS6398770U (OSRAM) * 1986-12-18 1988-06-27
JPS63171036U (OSRAM) * 1987-04-24 1988-11-08
GB2214012B (en) * 1987-12-23 1992-01-22 Marconi Instruments Ltd Frequency or phase modulation
JPH0250606A (ja) * 1988-08-12 1990-02-20 Nec Corp 周波数シンセサイザ
NO910106L (no) * 1990-01-19 1991-07-22 Motorola Inc Framgangsmaate og anordning for reduksjon av effektforbruk.
US5491839A (en) * 1991-08-21 1996-02-13 L. S. Research, Inc. System for short range transmission of a plurality of signals simultaneously over the air using high frequency carriers
US5299264A (en) * 1991-08-21 1994-03-29 L. S. Research, Inc. System for short-range transmission of signals over the air using a high frequency carrier
US5673323A (en) * 1995-04-12 1997-09-30 L. S. Research, Inc. Analog spread spectrum wireless speaker system
DE19535695C2 (de) * 1995-09-26 1997-10-16 Bosch Gmbh Robert Spannungsgesteuerter Oszillator
US6529712B1 (en) * 1999-08-25 2003-03-04 Conexant Systems, Inc. System and method for amplifying a cellular radio signal
JP2006140582A (ja) * 2004-11-10 2006-06-01 Matsushita Electric Ind Co Ltd 送信信号生成装置
KR20080071484A (ko) 2005-12-06 2008-08-04 로무 가부시키가이샤 주파수 변조기 및 이를 이용한 ｆｍ 송신 회로

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4189689A (en) * 1977-06-30 1980-02-19 Wulfsberg Electronics, Inc. Automatic leveling stabilized VHF-FM frequency synthesizer
GB2031676B (en) * 1978-09-02 1983-05-11 Marconi Instruments Ltd Frequency modulation systems
GB2045556B (en) * 1979-03-06 1983-08-03 Racal Dana Instr Ltd Frequency synthesizers
DE50124T1 (de) * 1980-05-01 1983-01-05 General Electric Co., Schenectady, N.Y. Anordnung zur frequenzmodulation eines frequenzsynthesierers mit phasenstarrer schleife.
US4321706A (en) * 1980-07-14 1982-03-23 John Fluke Mfg. Co., Inc. Frequency modulated phase-locked loop signal source
US4313209A (en) * 1980-07-14 1982-01-26 John Fluke Mfg. Co., Inc. Phase-locked loop frequency synthesizer including compensated phase and frequency modulation

Also Published As

Publication number Publication date
AU565631B2 (en) 1987-09-24
JPS58105631A (ja) 1983-06-23
EP0082473A3 (en) 1983-10-12
US4501019A (en) 1985-02-19
JPS6224974B2 (OSRAM) 1987-06-01
EP0082473A2 (en) 1983-06-29
AU9160882A (en) 1983-06-23

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Legal Events

Date Code Title Description
MKEX Expiry