GB934862A - Electrically variable attenuator - Google Patents

Electrically variable attenuator

Info

Publication number
GB934862A
GB934862A GB93?8/61A GB93861A GB934862A GB 934862 A GB934862 A GB 934862A GB 93861 A GB93861 A GB 93861A GB 934862 A GB934862 A GB 934862A
Authority
GB
United Kingdom
Prior art keywords
core
coaxial cable
march
helix
attenuation
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
GB93?8/61A
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.)
Bendix Corp
Original Assignee
Bendix Corp
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 Bendix Corp filed Critical Bendix Corp
Publication of GB934862A publication Critical patent/GB934862A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/18—Phase-shifters
    • H01P1/19—Phase-shifters using a ferromagnetic device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/22—Attenuating devices
    • H01P1/23—Attenuating devices using ferromagnetic material
    • 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
    • H03C7/022—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas using ferromagnetic devices, e.g. ferrites
    • 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
    • H03H7/24—Frequency- independent attenuators
    • H03H7/25—Frequency- independent attenuators comprising an element controlled by an electric or magnetic variable
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
    • H03H2001/0021—Constructional details
    • H03H2001/0035—Wound magnetic core

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Communication Cables (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Coils Or Transformers For Communication (AREA)
GB93?8/61A 1960-03-16 1961-03-14 Electrically variable attenuator Expired GB934862A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15450A US3108238A (en) 1960-03-16 1960-03-16 Electrically variable signal changing device using variable permeability material
US1565060A 1960-03-17 1960-03-17

Publications (1)

Publication Number Publication Date
GB934862A true GB934862A (en) 1963-08-21

Family

ID=26687395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB93?8/61A Expired GB934862A (en) 1960-03-16 1961-03-14 Electrically variable attenuator

Country Status (3)

Country Link
US (2) US3108238A (enrdf_load_stackoverflow)
DE (1) DE1167922B (enrdf_load_stackoverflow)
GB (1) GB934862A (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1007897A (en) * 1961-04-07 1965-10-22 Post Office Improvements in or relating to electromagnetic waveguides
US3227974A (en) * 1961-12-29 1966-01-04 Gray Reginald Irvan Radio-frquency interference guard in form of low-pass filter
US3323081A (en) * 1963-04-08 1967-05-30 Bendix Corp Microwave phase shifter
US3290622A (en) * 1963-11-27 1966-12-06 Gen Electric Microwave ferromagnetic phase shifter having controllable d. c. magnetization

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2650350A (en) * 1948-11-04 1953-08-25 Gen Electric Angular modulating system
DE818517C (de) * 1950-03-30 1951-10-25 Telefunken Gmbh Anordnung zur Erzeugung phasenmodulierter Impulse
DE1016786B (de) * 1952-12-20 1957-10-03 Grundig Max Koaxiale Verzoegerungsleitung
GB777341A (en) * 1954-04-13 1957-06-19 Marconi Wireless Telegraph Co Improvements in or relating to microwave channels of magnetically variable electrical length
US2900557A (en) * 1954-08-26 1959-08-18 Gen Electric Traveling wave directional attenuator
NL202195A (enrdf_load_stackoverflow) * 1955-02-18
DE1002417B (de) * 1956-05-29 1957-02-14 Siemens Ag UEbertragungsvierpol mit richtungsabhaengigen UEbertragungseigenschaften fuer elektromagnetische Wellen
US2951999A (en) * 1958-04-21 1960-09-06 Itt Constant impedance attenuator

Also Published As

Publication number Publication date
DE1167922B (de) 1964-04-16
USB253633I5 (enrdf_load_stackoverflow)
US3108238A (en) 1963-10-22

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