CA1035861A - Antenne cassegrain a sous-reflecteur ameliore pour systemes de communications terrestres - Google Patents

Antenne cassegrain a sous-reflecteur ameliore pour systemes de communications terrestres

Info

Publication number
CA1035861A
CA1035861A CA217,108A CA217108A CA1035861A CA 1035861 A CA1035861 A CA 1035861A CA 217108 A CA217108 A CA 217108A CA 1035861 A CA1035861 A CA 1035861A
Authority
CA
Canada
Prior art keywords
subreflector
improved
communication systems
terrestrial communication
cassegrain antenna
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
CA217,108A
Other languages
English (en)
Other versions
CA217108S (en
Inventor
James B. Macdougall
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.)
Commscope Technologies LLC
Original Assignee
Andrew LLC
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 Andrew LLC filed Critical Andrew LLC
Application granted granted Critical
Publication of CA1035861A publication Critical patent/CA1035861A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/02—Details
    • H01Q19/021—Means for reducing undesirable effects
    • H01Q19/026—Means for reducing undesirable effects for reducing the primary feed spill-over
CA217,108A 1974-06-06 1974-12-30 Antenne cassegrain a sous-reflecteur ameliore pour systemes de communications terrestres Expired CA1035861A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/476,775 US3983560A (en) 1974-06-06 1974-06-06 Cassegrain antenna with improved subreflector for terrestrial communication systems

Publications (1)

Publication Number Publication Date
CA1035861A true CA1035861A (fr) 1978-08-01

Family

ID=23893208

Family Applications (1)

Application Number Title Priority Date Filing Date
CA217,108A Expired CA1035861A (fr) 1974-06-06 1974-12-30 Antenne cassegrain a sous-reflecteur ameliore pour systemes de communications terrestres

Country Status (2)

Country Link
US (1) US3983560A (fr)
CA (1) CA1035861A (fr)

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US3209361A (en) * 1963-01-14 1965-09-28 James E Webb Cassegrainian antenna subreflector flange for suppressing ground noise
US3254342A (en) * 1963-07-09 1966-05-31 Bell Telephone Labor Inc Antenna system wherein beamwidth variation is achieved by changing shape of intermediate reflector
US3241147A (en) * 1963-12-16 1966-03-15 Bell Telephone Labor Inc Antenna utilizing intermediate cuspate reflector to couple energy from feed to main reflector
FR2101144B1 (fr) * 1970-08-28 1973-11-23 Comp Generale Electricite

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