GB506790A - Improvements in or relating to frequency convertors and circuits therefor - Google Patents

Improvements in or relating to frequency convertors and circuits therefor

Info

Publication number
GB506790A
GB506790A GB32691/37A GB3269137A GB506790A GB 506790 A GB506790 A GB 506790A GB 32691/37 A GB32691/37 A GB 32691/37A GB 3269137 A GB3269137 A GB 3269137A GB 506790 A GB506790 A GB 506790A
Authority
GB
United Kingdom
Prior art keywords
voltages
currents
input
output
terminals
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
GB32691/37A
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of GB506790A publication Critical patent/GB506790A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
    • H03C1/54—Balanced modulators, e.g. bridge type, ring type or double balanced type
    • H03C1/56—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising variable two-pole elements only
    • H03C1/58—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising variable two-pole elements only comprising diodes

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)
  • Filters And Equalizers (AREA)
  • Amplitude Modulation (AREA)

Abstract

506,790. Modulatingsystems. STIELTJES, F. H. Nov. 26, 1937, No. 32691. Convention date, Dec. 4, 1936. Drawings to Specification. [Classes 40 (iii) and 40 (v)] Relates to inversion modulators in which the carrier frequency affects only slightly the transfer of energy from input to output terminals, and in which the input voltages depend on the output currents and voltages and the output currents at the same time depend on the input currents and voltages ; or alternatively in which the output voltages depend on the input currents and voltages while the input currents depend on the output currents and voltages; or in which both alternatives are simultaneously present. In order to reduce the losses due to undesired frequencies produced in the modulator, the filters on the modulation input and output terminals are so designed that a low impedance to undesired frequencies is connected at those terminals where the currents are dependent on the current and voltage at other terminals, while high impedances to the undesired frequencies are connected at the other terminals. Calculations and an example of a modulator in accordance with the invention are given in the Specification.
GB32691/37A 1936-12-04 1937-11-26 Improvements in or relating to frequency convertors and circuits therefor Expired GB506790A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL266216X 1936-12-04

Publications (1)

Publication Number Publication Date
GB506790A true GB506790A (en) 1939-05-26

Family

ID=19781731

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32691/37A Expired GB506790A (en) 1936-12-04 1937-11-26 Improvements in or relating to frequency convertors and circuits therefor

Country Status (6)

Country Link
US (1) US2226026A (en)
BE (1) BE425004A (en)
CH (1) CH266216A (en)
DE (1) DE905381C (en)
GB (1) GB506790A (en)
NL (1) NL55869C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2710920A (en) * 1951-05-18 1955-06-14 Lenkurt Electric Co Inc Multichannel frequency generator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE589696C (en) * 1933-12-13 Lorenz Akt Ges C Procedure for avoiding the distortion factor in modulated tube transmitters by compensating for the distortion by means of rectified, modulated high frequency
US1448702A (en) * 1920-07-10 1923-03-13 American Telephone & Telegraph Translating circuits
US1672056A (en) * 1924-12-22 1928-06-05 American Telephone & Telegraph Translating circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2710920A (en) * 1951-05-18 1955-06-14 Lenkurt Electric Co Inc Multichannel frequency generator

Also Published As

Publication number Publication date
DE905381C (en) 1954-03-01
CH266216A (en) 1950-01-15
US2226026A (en) 1940-12-24
BE425004A (en)
NL55869C (en)

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