GB1353290A - Aerial arrangements - Google Patents

Aerial arrangements

Info

Publication number
GB1353290A
GB1353290A GB5676872A GB5676872A GB1353290A GB 1353290 A GB1353290 A GB 1353290A GB 5676872 A GB5676872 A GB 5676872A GB 5676872 A GB5676872 A GB 5676872A GB 1353290 A GB1353290 A GB 1353290A
Authority
GB
United Kingdom
Prior art keywords
slots
waveguide
dec
diameter
decrease
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
GB5676872A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1353290A publication Critical patent/GB1353290A/en
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
    • H01Q19/10—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 using reflecting surfaces
    • H01Q19/12—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 using reflecting surfaces wherein the surfaces are concave
    • H01Q19/13—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 using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Waveguide Aerials (AREA)

Abstract

1353290 Aerials LICENTIA PATENTVERWALTUNGS-GmbH 8 Dec 1972 [14 Dec 1971] 56768/72 Heading H4A A feed for a parabolic reflector comprises a waveguide 1 of diameter c with an end aperture 2 covered by a dielectric hood 9. A metal ring 3 is disposed on the end of the waveguide 1 and has a conical surface 4 facing the reflector, with an included angle of 120 Π30 degrees. A series of concentric slots 5, 6, 7, 8 are provided on said surface, whose depths decrease towards the outer edge thereof. Such decrease may be in accordance with a quadratic function. The width of the slots may be between #/10 and #/20, the spacing between successive slots between #/4 and #/8, and the diameter of the ring 3#, where # is the wavelength at the mean working frequency. The arrangement is stated to promote equality of beam widths in the E and H planes, with improved matching and lower side lobes, over a wide frequency band.
GB5676872A 1971-12-14 1972-12-08 Aerial arrangements Expired GB1353290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712161893 DE2161893C3 (en) 1971-12-14 1971-12-14 Antenna system, consisting of a flat parabolic mirror and an illuminating antenna

Publications (1)

Publication Number Publication Date
GB1353290A true GB1353290A (en) 1974-05-15

Family

ID=5827877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5676872A Expired GB1353290A (en) 1971-12-14 1972-12-08 Aerial arrangements

Country Status (2)

Country Link
DE (1) DE2161893C3 (en)
GB (1) GB1353290A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188784A (en) * 1986-03-25 1987-10-07 Marconi Co Ltd Wideband horn antenna
GB2272578A (en) * 1992-11-13 1994-05-18 D Mac International Limited Antenna

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2188784A (en) * 1986-03-25 1987-10-07 Marconi Co Ltd Wideband horn antenna
GB2188784B (en) * 1986-03-25 1990-02-21 Marconi Co Ltd Wideband horn antenna
GB2272578A (en) * 1992-11-13 1994-05-18 D Mac International Limited Antenna

Also Published As

Publication number Publication date
DE2161893C3 (en) 1979-08-16
DE2161893A1 (en) 1973-06-20
DE2161893B2 (en) 1978-12-14

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees