GB1457907A - Microwave antennas - Google Patents

Microwave antennas

Info

Publication number
GB1457907A
GB1457907A GB887874A GB887874A GB1457907A GB 1457907 A GB1457907 A GB 1457907A GB 887874 A GB887874 A GB 887874A GB 887874 A GB887874 A GB 887874A GB 1457907 A GB1457907 A GB 1457907A
Authority
GB
United Kingdom
Prior art keywords
paraboloid
plane
plates
point
focal point
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
GB887874A
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.)
TERMA ELEKTRONISK INDUSTRI AS
Original Assignee
TERMA ELEKTRONISK INDUSTRI AS
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 TERMA ELEKTRONISK INDUSTRI AS filed Critical TERMA ELEKTRONISK INDUSTRI AS
Priority to GB887874A priority Critical patent/GB1457907A/en
Publication of GB1457907A publication Critical patent/GB1457907A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/22—Reflecting surfaces; Equivalent structures functioning also as polarisation filter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/001—Crossed polarisation dual antennas

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

1457907 Aerials TERMA ELEKTRONISK INDUSTRI AS 26 Feb 1975 [27 Feb 1974] 8878/74 Heading H4A A dual polarization mode microwave aerial comprises two orthogonal grid systems mounted in a generally combined intercrossing manner, so that each system defines a respective reflector surface having a focal point, the two focal points being spaced from each other. The main axes of the two surfaces are parallel. As described, the forward edges of a set of plates 10 define an E-plane paraboloid P E having an axis X E and a focal point F E , whilst the forward edges of a set of plates 12 define an H-plane paraboloid P H having an axis X H and a focal point F H . Horns are located at the points F E , F H which respectively radiate waves polarized in the E- and H-planes. The main beams B E , B H from the reflector surfaces are parallel to the axes X E , X H . Any H-plane polarized radiation from the horn at the point F E will be reflected from the edges of the plates 12 (forming the paraboloid P H ) in a direction B E1 which is different from that of the main beam. Correspondingly, any E-plane polarized radiation from the horn at the point F H will be deflected by the paraboloid P E in a direction B H1 .
GB887874A 1974-02-27 1974-02-27 Microwave antennas Expired GB1457907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB887874A GB1457907A (en) 1974-02-27 1974-02-27 Microwave antennas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB887874A GB1457907A (en) 1974-02-27 1974-02-27 Microwave antennas

Publications (1)

Publication Number Publication Date
GB1457907A true GB1457907A (en) 1976-12-08

Family

ID=9861032

Family Applications (1)

Application Number Title Priority Date Filing Date
GB887874A Expired GB1457907A (en) 1974-02-27 1974-02-27 Microwave antennas

Country Status (1)

Country Link
GB (1) GB1457907A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309709A (en) * 1979-08-23 1982-01-05 The Marconi Company Limited Dual frequency aerial feed arrangements
GB2135132A (en) * 1983-01-26 1984-08-22 Anixter Bros Grid parabolic antenna
GB2154804A (en) * 1984-02-27 1985-09-11 United Technologies Corp Wide angle multi-mode antenna
FR2568062A1 (en) * 1984-07-17 1986-01-24 Thomson Alcatel Espace BIFREQUENCE ANTENNA WITH THE SAME CROSS-POLARIZATION ZONE COVER FOR TELECOMMUNICATIONS SATELLITES
WO2002061882A1 (en) * 2001-02-02 2002-08-08 Saab Ericsson Space Ab Reflector and antenna system containing reflectors

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309709A (en) * 1979-08-23 1982-01-05 The Marconi Company Limited Dual frequency aerial feed arrangements
GB2135132A (en) * 1983-01-26 1984-08-22 Anixter Bros Grid parabolic antenna
US4801946A (en) * 1983-01-26 1989-01-31 Mark Antenna Products, Inc. Grid antenna
GB2154804A (en) * 1984-02-27 1985-09-11 United Technologies Corp Wide angle multi-mode antenna
FR2568062A1 (en) * 1984-07-17 1986-01-24 Thomson Alcatel Espace BIFREQUENCE ANTENNA WITH THE SAME CROSS-POLARIZATION ZONE COVER FOR TELECOMMUNICATIONS SATELLITES
EP0170154A1 (en) * 1984-07-17 1986-02-05 Alcatel Espace Cross-polarized dual-frequency antenna with the same area coverage for telecommunication satellites
US4757323A (en) * 1984-07-17 1988-07-12 Alcatel Thomson Espace Crossed polarization same-zone two-frequency antenna for telecommunications satellites
WO2002061882A1 (en) * 2001-02-02 2002-08-08 Saab Ericsson Space Ab Reflector and antenna system containing reflectors
US6940464B2 (en) 2001-02-02 2005-09-06 Saab Ericsson Space Ab Reflector and antenna system containing reflectors

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee