FR49942E - - Google Patents

Info

Publication number
FR49942E
FR49942E FR49942DA FR49942E FR 49942 E FR49942 E FR 49942E FR 49942D A FR49942D A FR 49942DA FR 49942 E FR49942 E FR 49942E
Authority
FR
France
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
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.)
Publication date
Application granted granted Critical
Publication of FR49942E publication Critical patent/FR49942E/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/02—Coupling devices of the waveguide type with invariable factor of coupling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/335—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors at the feed, e.g. for impedance matching
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
FR49942D 1937-11-16 Expired FR49942E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US174759A US2226686A (en) 1937-11-16 1937-11-16 High frequency transmission network

Publications (1)

Publication Number Publication Date
FR49942E true FR49942E (fr) 1939-09-25

Family

ID=22637408

Family Applications (1)

Application Number Title Priority Date Filing Date
FR49942D Expired FR49942E (fr) 1937-11-16

Country Status (4)

Country Link
US (1) US2226686A (fr)
DE (1) DE932025C (fr)
FR (1) FR49942E (fr)
GB (1) GB517052A (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB579778A (en) * 1943-11-05 1946-08-15 Standard Telephones Cables Ltd Improvements relating to radio antennae
US2512704A (en) * 1943-12-06 1950-06-27 Int Standard Electric Corp Arrangement for coupling wide frequency band antennae to transmission lines
US2644928A (en) * 1948-06-09 1953-07-07 Rca Corp Directional transmission line transducer
NL180280B (nl) * 1952-08-02 Euteco Impianti Spa Werkwijze voor het bereiden van een katalysator op basis van molybdeen- en ijzeroxyde voor de oxydatie van methanol tot formaldehyde.
GB888901A (en) * 1959-07-23 1962-02-07 Gen Electric Co Ltd Improvements in or relating to four-terminal phase equaliser electric networks
US4999642A (en) * 1988-03-01 1991-03-12 Wells Donald H Transmission line coupling device with closed impedance matching loop
US5083136A (en) * 1989-11-16 1992-01-21 Wells Donald H Transmission line coupling device with closed impedance matching loop
US5463405A (en) * 1994-05-20 1995-10-31 Valor Enterprises, Inc. Cellular telephone coupling network

Also Published As

Publication number Publication date
GB517052A (en) 1940-01-18
DE932025C (de) 1955-08-22
US2226686A (en) 1940-12-31

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