FR926719A - Improvements to frequency modulation systems - Google Patents

Improvements to frequency modulation systems

Info

Publication number
FR926719A
FR926719A FR926719DA FR926719A FR 926719 A FR926719 A FR 926719A FR 926719D A FR926719D A FR 926719DA FR 926719 A FR926719 A FR 926719A
Authority
FR
France
Prior art keywords
frequency modulation
modulation systems
systems
frequency
modulation
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
Other languages
French (fr)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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
Priority claimed from US440172A external-priority patent/US2347458A/en
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR926719A publication Critical patent/FR926719A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/38—Angle modulation by converting amplitude modulation to angle modulation
    • H03C3/40—Angle modulation by converting amplitude modulation to angle modulation using two signal paths the outputs of which have a predetermined phase difference and at least one output being amplitude-modulated
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/06—Means for changing frequency deviation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/08—Modifications of modulator to linearise modulation, e.g. by feedback, and clearly applicable to more than one type of modulator
FR926719D 1942-04-23 1946-05-09 Improvements to frequency modulation systems Expired FR926719A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US440172A US2347458A (en) 1942-04-23 1942-04-23 Frequency modulation system
US444843A US2347459A (en) 1942-04-23 1942-05-28 Frequency modulation apparatus

Publications (1)

Publication Number Publication Date
FR926719A true FR926719A (en) 1947-10-09

Family

ID=27032333

Family Applications (2)

Application Number Title Priority Date Filing Date
FR926719D Expired FR926719A (en) 1942-04-23 1946-05-09 Improvements to frequency modulation systems
FR55048D Expired FR55048E (en) 1942-04-23 1946-10-15 Improvements to frequency modulation systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR55048D Expired FR55048E (en) 1942-04-23 1946-10-15 Improvements to frequency modulation systems

Country Status (4)

Country Link
US (1) US2347459A (en)
BE (2) BE466324A (en)
FR (2) FR926719A (en)
GB (2) GB562432A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2551348A (en) * 1945-03-28 1951-05-01 Philco Corp Electrical apparatus
US2460965A (en) * 1945-09-10 1949-02-08 Zenith Radio Corp Phase modulation system
US2645710A (en) * 1948-03-12 1953-07-14 Hartz Julius Radio transmission and carrier wave modulation
US2590784A (en) * 1948-11-26 1952-03-25 Philco Corp Heterodyne frequency modulator with automatic deviation control
US2659813A (en) * 1950-02-11 1953-11-17 Bell Telephone Labor Inc Frequency modulation repeater

Also Published As

Publication number Publication date
FR55048E (en) 1951-06-05
US2347459A (en) 1944-04-25
GB562432A (en) 1944-06-30
BE466324A (en)
BE477900A (en)
GB564045A (en) 1944-09-11

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