FR979981A - Perfectionnements aux transmissions radio-électriques - Google Patents

Perfectionnements aux transmissions radio-électriques

Info

Publication number: FR979981A
Authority: FR; France
Prior art keywords: radio transmission; radio; transmission
Prior art date: 1942-11-23
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

English (en)

Inventor

Roger Bataille

Geoges Honorat

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.)

1942-11-23

Filing date

1942-11-23

Publication date

1951-05-07

1942-11-23 Application filed filed Critical

1946-10-18 Priority claimed from US704074A external-priority patent/US2606285A/en

1951-05-07 Application granted granted Critical

1951-05-07 Publication of FR979981A publication Critical patent/FR979981A/fr

Status Expired legal-status Critical Current

Classifications

- 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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
- 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
- H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
- H03B21/01—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies
- H03B21/02—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies by plural beating, i.e. for frequency synthesis ; Beating in combination with multiplication or division of frequency
- 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
- H03B21/00—Generation of oscillations by combining unmodulated signals of different frequencies
- H03B21/01—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies
- H03B21/04—Generation of oscillations by combining unmodulated signals of different frequencies by beating unmodulated signals of different frequencies using several similar stages
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Power Engineering (AREA)
Oscillators With Electromechanical Resonators (AREA)
Transmitters (AREA)
Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

FR979981D 1942-11-23 1942-11-23 Perfectionnements aux transmissions radio-électriques Expired FR979981A (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
FR979981T		1942-11-23
US704074A US2606285A (en)	1942-11-23	1946-10-18	Double heterodyne radio receiver
US37696A US2679005A (en)	1942-11-23	1948-07-08	Oscillation generation system

Publications (1)

Publication Number	Publication Date
FR979981A true FR979981A (fr)	1951-05-07

Family

ID=32302967

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
FR979981D Expired FR979981A (fr)	1942-11-23	1942-11-23	Perfectionnements aux transmissions radio-électriques
FR56148D Expired FR56148E (fr)	1942-11-23	1946-01-21	Perfectionnements aux transmissions radio-électriques

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
FR56148D Expired FR56148E (fr)	1942-11-23	1946-01-21	Perfectionnements aux transmissions radio-électriques

Country Status (3)

Country	Link
US (1)	US2679005A (fr)
FR (2)	FR979981A (fr)
GB (3)	GB654355A (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1029051B (de) *	1952-10-27	1958-04-30	Saba Gmbh	Auf einzelne Stationen unstetig abstimmbarer UKW-UEberlagerungsempfaenger
US2773187A (en) *	1954-02-01	1956-12-04	Hoffman Electronics Corp	Crystal oscillator circuits or the like
US2752492A (en) *	1954-02-16	1956-06-26	Ohmega Lab	High frequency marker
US2859343A (en) *	1954-09-20	1958-11-04	Daystrom Inc	Method and apparatus for testing electronic circuits and components
US2816229A (en) *	1955-04-08	1957-12-10	Jr Harry Vantine	Crystal saving arrangement for multichannel high frequency electronic equipment
US2921268A (en) *	1955-05-26	1960-01-12	Ohmega Lab	Wave generating apparatus
US2796519A (en) *	1956-01-30	1957-06-18	Rca Corp	Tuning device
US2955197A (en) *	1956-10-09	1960-10-04	James W Bryan	Selected frequency transistor transmitter
US3049674A (en) *	1959-04-30	1962-08-14	Jr Robert R Stone	Frequency synthesizer employing at least one frequency drift cancellation loop
US3085202A (en) *	1959-06-02	1963-04-09	Jakubowics Edward	Synthesization of crystal-controlled frequencies
US3364465A (en) *	1962-02-12	1968-01-16	Gen Precision Inc	Method for tuning inductive loop vehicle detectors
GB1110784A (en) *	1964-06-13	1968-04-24	Emi Ltd	Improvements relating to wide band radio transmitters
US3278856A (en) *	1965-04-22	1966-10-11	Topping Electronics Ltd	Frequency generator
GB1094867A (en) *	1965-11-05	1967-12-13	Gen Electric Co Ltd	Improvements in or relating to radio transmitters
US3576525A (en) *	1967-07-17	1971-04-27	Singer General Precision	Inductive loop vehicle presence detector
US4163943A (en) *	1976-06-14	1979-08-07	Matsushita Electric Industrial Co., Ltd.	Radio receiver employing premixing and digital display

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2131558A (en) *	1934-07-27	1938-09-27	Bendix Radio Corp	Selective high frequency oscillator system
GB486448A (en) *	1936-12-02	1938-06-02	Standard Telephones Cables Ltd	Improvements in or relating to electric oscillation generators
US2270023A (en) *	1938-03-04	1942-01-13	Rca Corp	Superheterodyne receiver
US2252870A (en) *	1939-01-17	1941-08-19	Bell Telephone Labor Inc	Carrier frequency heterodyne oscillator
US2265083A (en) *	1939-03-22	1941-12-02	Rca Corp	Oscillation generation system
US2231634A (en) *	1939-04-21	1941-02-11	Bell Telephone Labor Inc	Variable frequency wave producing means
US2401481A (en) *	1940-09-30	1946-06-04	Hazeltine Research Inc	High-frequency signal generator

1942
- 1942-11-23 FR FR979981D patent/FR979981A/fr not_active Expired
1946
- 1946-01-21 FR FR56148D patent/FR56148E/fr not_active Expired
- 1946-08-16 GB GB24485/46A patent/GB654355A/en not_active Expired
- 1946-08-16 GB GB24484/48D patent/GB647643A/en not_active Expired
- 1946-08-16 GB GB27357/49A patent/GB654400A/en not_active Expired
1948
- 1948-07-08 US US37696A patent/US2679005A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
FR56148E (fr)	1952-09-17
US2679005A (en)	1954-05-18
GB654355A (en)	1951-06-13
GB654400A (en)	1951-06-13
GB647643A (en)	1950-12-20

Publication	Publication Date	Title
FR56148E (fr)	1952-09-17	Perfectionnements aux transmissions radio-électriques
FR949781A (fr)	1949-09-08	Transmission irreversible
FR920123A (fr)	1947-03-28	Perfectionnements aux transmissions
GB557970A (en)	1943-12-14	Variable speed transmissions
FR57650E (fr)	1953-03-17	Récepteurs de radio
FR895284A (fr)	1945-01-19	Transmission hydraulique
FR938617A (fr)	1948-10-20	Perfectionnements aux transmissions magnétiques
FR925566A (fr)	1947-09-08	Perfectionnements aux transmissions
CH244478A (de)	1946-09-15	Radioempfänger mit Bandspreizung.
FR947817A (fr)	1949-07-13	Régulation de transmission
FR894978A (fr)	1945-01-11	Perfectionnements apportés aux transmissions mécaniques
FR900474A (fr)	1945-06-29	Chaîne de transmission
FR51917E (fr)	1943-05-25	Perfectionnements aux transmissions de force
CH296760A (de)	1954-02-28	Kraftübertragungskette.
FR954137A (fr)	1949-12-19	Perfectionnements aux embrayages
FR977554A (fr)	1951-04-03	Changement de vitesses
FR978534A (fr)	1951-04-16	Perfectionnement aux transmissions par courants porteurs
FR976597A (fr)	1951-03-20	Robinet
FI20899A (fi)	1945-11-10	Nopeudenvaihtovaihdepyörästö
FI20900A (fi)	1945-11-10	Nopeudenvaihtovaihdepyörästö
FR925741A (fr)	1947-09-11	Perfectionnements aux transmissions
FR881179A (fr)	1943-04-16	Perfectionnements aux courroies trapézoïdales
CH241583A (de)	1946-03-15	Getriebe.
CA408095A (fr)	1942-10-20	Calculateur a selecteur rapide
DK72133C (da)	1951-02-12	Radioapparat med båndspredning.