FR841457A - Frequency changers - Google Patents

Frequency changers

Info

Publication number
FR841457A
FR841457A FR841457DA FR841457A FR 841457 A FR841457 A FR 841457A FR 841457D A FR841457D A FR 841457DA FR 841457 A FR841457 A FR 841457A
Authority
FR
France
Prior art keywords
frequency changers
changers
frequency
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 US156698A external-priority patent/US2159595A/en
Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR841457A publication Critical patent/FR841457A/en
Expired legal-status Critical Current

Links

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
    • 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
    • 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
FR841457D 1937-07-31 1938-07-29 Frequency changers Expired FR841457A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US156698A US2159595A (en) 1937-07-31 1937-07-31 Frequency conversion circuits
US205225A US2159597A (en) 1937-07-31 1938-04-30 Frequency conversion circuits
US205224A US2159596A (en) 1937-07-31 1938-04-30 Frequency conversion circuits

Publications (1)

Publication Number Publication Date
FR841457A true FR841457A (en) 1939-05-22

Family

ID=27387906

Family Applications (1)

Application Number Title Priority Date Filing Date
FR841457D Expired FR841457A (en) 1937-07-31 1938-07-29 Frequency changers

Country Status (2)

Country Link
US (2) US2159597A (en)
FR (1) FR841457A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452048A (en) * 1943-07-12 1948-10-26 Sperry Corp Frequency conversion apparatus
US2418568A (en) * 1944-04-11 1947-04-08 Hewlett Packard Co Frequency divider
US2460800A (en) * 1945-12-27 1949-02-08 Submarine Signal Co Fractional frequency generator
US2459462A (en) * 1946-03-16 1949-01-18 Rca Corp Two-tone keyer
NL142629B (en) * 1947-10-03 1900-01-01 Tovarna Motornih Vazil Tomos INTERCHANGE GEAR WITH CLUTCH AND GEARS IN A COMMON HOUSE.
NL81371C (en) * 1948-06-11
US2739240A (en) * 1952-03-13 1956-03-20 Iowa State College Res Found Frequency-dividing circuit
US2735013A (en) * 1953-09-28 1956-02-14 Multiple frequency generator
BE534087A (en) * 1953-12-14
US3277361A (en) * 1958-12-31 1966-10-04 Jr Robert R Stone Frequency divider synthesizer
US4641101A (en) * 1984-10-25 1987-02-03 Ifr, Inc. Wideband, microwave regenerative divider with varactor tuning
DE10342569A1 (en) * 2003-09-15 2005-04-14 Infineon Technologies Ag Frequency divider for signals in gigahertz (GHZ) range, with mixer of input signal with feedback output signal, containing bandpass characteristic of mixer amplifying (MOS) transistors for working frequencies of several 10 GHz

Also Published As

Publication number Publication date
US2159596A (en) 1939-05-23
US2159597A (en) 1939-05-23

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