CA411423A - Frequency conversion system - Google Patents

Frequency conversion system

Info

Publication number: CA411423A
Authority: CA; Canada
Prior art keywords: frequency conversion; conversion system; frequency; conversion
Prior art date: 1940-01-27
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

CA411423A

Other languages

French (fr)

Inventor

M. Deerhake Franklin

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.)

General Electric Canada Co

Original Assignee

Canadian General 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.)

1940-01-27

Publication date

1943-03-30

1943-03-30 Application granted granted Critical

1943-03-30 Publication of CA411423A publication Critical patent/CA411423A/en

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
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

CA411423A 1940-01-27 Frequency conversion system Expired CA411423A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CA411423T
US315998A US2228815A (en)	1940-01-27	1940-01-27	Frequency conversion system

Publications (1)

Publication Number	Publication Date
CA411423A true CA411423A (en)	1943-03-30

Family

ID=23227015

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA411423A Expired CA411423A (en)	1940-01-27		Frequency conversion system

Country Status (4)

Country	Link
US (1)	US2228815A (en)
CA (1)	CA411423A (en)
CH (1)	CH232472A (en)
FR (1)	FR869542A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2502294A (en) *	1943-08-19	1950-03-28	Wallace Marcel	Double sweep panoramic radio receiver
GB579567A (en) *	1943-10-07	1946-08-08	Marconi Wireless Telegraph Co	Improvements in frequency controlling and stabilising means in radio-apparatus and the like
US2643329A (en) *	1945-05-14	1953-06-23	Standard Telephones Cables Ltd	Tracking system between receiver and transmitter
US2501591A (en) *	1945-08-27	1950-03-21	Premier Crystal Lab Inc	Multiband superheterodyne radio receiver having a push-button station selector
US2656459A (en) *	1945-10-30	1953-10-20	John H Tinlot	Wide frequency coverage beacon receiver
US2555391A (en) *	1946-03-04	1951-06-05	Arthur A Glass	Radio oscillator control
US2451430A (en) *	1946-04-23	1948-10-12	Jefferson Standard Broadcastin	Carrier frequency shift signaling
US2666141A (en) *	1946-05-08	1954-01-12	James K Clapp	Single side band mixer for moving target indicating radar systems
US2509963A (en) *	1947-01-30	1950-05-30	Collins Radio Co	Radio receiving and frequency conversion system
US2647992A (en) *	1948-12-03	1953-08-04	Gen Electric	Frequency stabilized radio receiving system
US2633492A (en) *	1948-12-30	1953-03-31	Bell Telephone Labor Inc	Guided wave frequency range, frequency selective and equalizing structure
US2710343A (en) *	1950-08-09	1955-06-07	Dale Belford	Secrecy system for transmitting television signals
US2691065A (en) *	1951-01-12	1954-10-05	Rca Corp	Multiplex relay system
US2800580A (en) *	1952-04-21	1957-07-23	Philco Corp	Delay system
DE1276144B (en) *	1962-09-19	1968-08-29	Siemens Ag	Radio relay system with angle modulation
US4991144A (en) *	1963-03-29	1991-02-05	The United States Of America As Represented By The Secretary Of The Navy	Dopplerized echo repeater
US3921123A (en) *	1967-02-02	1975-11-18	Us Navy	Torpedo target simulator
US3733438A (en) *	1971-03-01	1973-05-15	Bell Telephone Labor Inc	Carrier supply for frequency division multiplexed systems
USRE31295E (en) *	1971-03-01	1983-06-28	Bell Telephone Laboratories, Incorporated	Carrier supply for frequency division multiplexed systems
US4083004A (en) *	1976-06-08	1978-04-04	Westinghouse Electric Corporation	Expendable repeater employing harmonic mixing
JPS58176459U (en) *	1982-05-19	1983-11-25	アルプス電気株式会社	Local oscillator amplifier

0
- CA CA411423A patent/CA411423A/en not_active Expired
1940
- 1940-01-27 US US315998A patent/US2228815A/en not_active Expired - Lifetime
1941
- 1941-01-28 FR FR869542D patent/FR869542A/en not_active Expired
- 1941-08-13 CH CH232472D patent/CH232472A/en unknown

Also Published As

Publication number	Publication date
US2228815A (en)	1941-01-14
CH232472A (en)	1944-05-31
FR869542A (en)	1942-02-04

Publication	Publication Date	Title
CA411423A (en)	1943-03-30	Frequency conversion system
AU113427B2 (en)	1941-07-17	High frequency system
CA396519A (en)	1941-05-13	Frequency conversion system
AU256540A (en)	1941-07-17	High frequency system
CA392382A (en)	1940-11-05	Frequency selective system
CA388505A (en)	1940-05-07	Electric frequency reducing system
CA392926A (en)	1940-12-03	Electrical conversion system
CA388047A (en)	1940-04-16	Electric conversion system
CA388871A (en)	1940-05-21	High frequency transmission system
CA388050A (en)	1940-04-16	Power system
CA389696A (en)	1940-07-02	Power system
CA391685A (en)	1940-10-01	Catalytic conversion apparatus
CA392317A (en)	1940-11-05	High frequency aerial system
CA401872A (en)	1941-12-30	Frequency converter
CA399524A (en)	1941-09-23	Frequency converter
CA390235A (en)	1940-07-23	Catalyst preparation
CA387292A (en)	1940-03-05	Antenna system
CA389770A (en)	1940-07-02	Antenna system
CA393241A (en)	1940-12-17	Antenna system
CA388788A (en)	1940-05-21	Continuous converter
CA393646A (en)	1941-01-07	Frequency reducing system
CA390701A (en)	1940-08-13	Short wave converter
CA386223A (en)	1940-01-09	Telegraph system
CA389358A (en)	1940-06-11	Hydrocarbon conversion
CA390191A (en)	1940-07-23	Hydrocarbon conversion