CH269002A - Emetteur radioélectrique modulé en fréquence. - Google Patents

Emetteur radioélectrique modulé en fréquence.

Info

Publication number: CH269002A
Authority: CH; Switzerland
Prior art keywords: radio transmitter; frequency modulated; modulated radio; frequency; transmitter
Prior art date: 1946-04-15

Application number

Other languages

English (en)

Inventor

Limited Marconi S Wire Company

Original Assignee

Marconi Wireless Telegraph Co

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.)

1946-04-15

Filing date

1947-05-13

Publication date

1950-06-15

1947-05-13 Application filed by Marconi Wireless Telegraph Co filed Critical Marconi Wireless Telegraph Co

1950-06-15 Publication of CH269002A publication Critical patent/CH269002A/fr

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
- H03B5/1817—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator
- H03B5/1835—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator the active element in the amplifier being a vacuum tube
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/10—Angle modulation by means of variable impedance
- H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
- H03C3/14—Angle modulation by means of variable impedance by means of a variable reactive element simulated by circuit comprising active element with at least three electrodes, e.g. reactance-tube circuit

CH269002D 1946-04-15 1947-05-13 Emetteur radioélectrique modulé en fréquence. CH269002A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB269002X		1946-04-15

Publications (1)

Publication Number	Publication Date
CH269002A true CH269002A (fr)	1950-06-15

Family

ID=10250965

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH269002D CH269002A (fr)	1946-04-15	1947-05-13	Emetteur radioélectrique modulé en fréquence.

Country Status (4)

Country	Link
US (1)	US2502557A (fr)
CH (1)	CH269002A (fr)
DE (2)	DE831271C (fr)
GB (1)	GB610951A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2710378A (en) *	1951-04-28	1955-06-07	Motorola Inc	Frequency modulation system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE372742C (de) *	1921-03-03	1923-04-03	Robert Pfaeffle	Verfahren zur Herstellung von Schmuckgegenstaenden
US2278658A (en) *	1939-12-06	1942-04-07	Rca Corp	Frequency modulation
US2335278A (en) *	1940-12-12	1943-11-30	Press Wireless Inc	Keying control method and system
US2321269A (en) *	1941-11-21	1943-06-08	Rca Corp	Frequency modulation

1946
- 1946-04-15 GB GB11545/46A patent/GB610951A/en not_active Expired
1947
- 1947-05-13 CH CH269002D patent/CH269002A/fr unknown
- 1947-07-22 US US762754A patent/US2502557A/en not_active Expired - Lifetime
1949
- 1949-01-01 DE DEP29874A patent/DE831271C/de not_active Expired
1950
- 1950-03-01 DE DEA931A patent/DE839814C/de not_active Expired

Also Published As

Publication number	Publication date
DE839814C (de)	1952-05-26
GB610951A (en)	1948-10-22
DE831271C (de)	1952-02-11
US2502557A (en)	1950-04-04

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