GB540804A - A constant impedance load device, particularly for modulating systems - Google Patents

A constant impedance load device, particularly for modulating systems

Info

Publication number
GB540804A
GB540804A GB9216/40A GB921640A GB540804A GB 540804 A GB540804 A GB 540804A GB 9216/40 A GB9216/40 A GB 9216/40A GB 921640 A GB921640 A GB 921640A GB 540804 A GB540804 A GB 540804A
Authority
GB
United Kingdom
Prior art keywords
impedance
impedances
fixed
variable
quarter
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
GB9216/40A
Other languages
English (en)
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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.)
Filing date
Publication date
Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB540804A publication Critical patent/GB540804A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/08—Amplitude modulation by means of variable impedance element
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C7/00—Modulating electromagnetic waves
    • H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • H03H7/40—Automatic matching of load impedance to source impedance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H5/00—One-port networks comprising only passive electrical elements as network components

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Transmitters (AREA)
  • Plasma Technology (AREA)
  • Waveguide Aerials (AREA)
GB9216/40A 1939-05-24 1940-05-24 A constant impedance load device, particularly for modulating systems Expired GB540804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US275370A US2295351A (en) 1939-05-24 1939-05-24 Modulating system

Publications (1)

Publication Number Publication Date
GB540804A true GB540804A (en) 1941-10-30

Family

ID=23051996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9216/40A Expired GB540804A (en) 1939-05-24 1940-05-24 A constant impedance load device, particularly for modulating systems

Country Status (4)

Country Link
US (1) US2295351A (enrdf_load_stackoverflow)
CH (1) CH219821A (enrdf_load_stackoverflow)
GB (1) GB540804A (enrdf_load_stackoverflow)
NL (1) NL58726C (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498059A (en) * 1947-12-11 1950-02-21 Bell Telephone Labor Inc Modulation of high-frequency generators
US2543827A (en) * 1948-12-30 1951-03-06 Rca Corp Percentage modulation control network
US2623993A (en) * 1950-09-12 1952-12-30 Westinghouse Electric Corp Amplitude modulator with double yield
US4661993A (en) * 1984-10-12 1987-04-28 At&T Company Technique for improving radio system performance during fading

Also Published As

Publication number Publication date
US2295351A (en) 1942-09-08
CH219821A (de) 1942-02-28
NL58726C (enrdf_load_stackoverflow)

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