GB1448054A – Two channel three-dimensional radar antenna
– Google Patents
GB1448054A – Two channel three-dimensional radar antenna
– Google Patents
Two channel three-dimensional radar antenna
Info
Publication number
GB1448054A
GB1448054A
GB1382574A
GB1382574A
GB1448054A
GB 1448054 A
GB1448054 A
GB 1448054A
GB 1382574 A
GB1382574 A
GB 1382574A
GB 1382574 A
GB1382574 A
GB 1382574A
GB 1448054 A
GB1448054 A
GB 1448054A
Authority
GB
United Kingdom
Prior art keywords
aperture
horn
slots
array
linear
Prior art date
1973-03-30
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
GB1382574A
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.)
Thales SA
Original Assignee
Thomson CSF SA
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.)
1973-03-30
Filing date
1974-03-28
Publication date
1976-09-02
1974-03-28
Application filed by Thomson CSF SA
filed
Critical
Thomson CSF SA
1976-09-02
Publication of GB1448054A
publication
Critical
patent/GB1448054A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01Q—ANTENNAS, i.e. RADIO AERIALS
H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
H01Q25/002—Antennas or antenna systems providing at least two radiating patterns providing at least two patterns of different beamwidth; Variable beamwidth antennas
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01Q—ANTENNAS, i.e. RADIO AERIALS
H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
H01Q3/28—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the amplitude
Abstract
1448054 Aerials THOMSON-CSF 28 March 1974 [30 March 1973] 13825/74 Heading H4A A three-dimensional radar aerial which is rotatable in azimuth comprises a first feed means producing a main beam which effects a high speed scanning of space in elevation, and a second feed means operating independently of the first feed means and producing at the aperture of the aerial a secondary beam occupying a predetermined extent in elevation, in which it carries out surveillance. As described, the first feed means comprises a Robinson type aerial in which two parallel trapezoidal plates 4, 5 are so formed together as to provide a circular feed ring 3 at one end and a linear aperture at the other end. Rotation of a feed horn 2 in front of the ring 3 produces a linear displacement of the apparent source at the linear aperture, said linear aperture being extended by a flared horn 6 to a radiating aperture 60 in front of which is located a reflector 7 having an elliptical-paraboloidal surface. With the linear aperture of the Robinson type aerial vertically disposed, the radiated waves are horizontally polarized. The secondary beam is produced by a vertically disposed array of slots 9 in one wall 10 of the flared horn 6 leading to the radiating aperture 60. The array of slots is fed by means of a rectangular waveguide 8, which is supplied at one end 11 and is terminated at the other end 12 by an absorbent load 13. The radiated waves from the array of slots 9 are vertically polarized, and their entry into the Robinson type aerial is prevented by means of a vertically disposed reflecting plate 14 in the central plane of the linear aperture thereof. Matching members may also be inserted in the horn 6. The secondary beam may be of pencil shape or, by suitably designing the array of slots, it may be given a special shape, such as cosec
GB1382574A
1973-03-30
1974-03-28
Two channel three-dimensional radar antenna
Expired
GB1448054A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
FR7311615A
FR2223849B1
(en)
1973-03-30
1973-03-30
Publications (1)
Publication Number
Publication Date
GB1448054A
true
GB1448054A
(en)
1976-09-02
Family
ID=9117181
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1382574A
Expired
GB1448054A
(en)
1973-03-30
1974-03-28
Two channel three-dimensional radar antenna
Country Status (4)
Country
Link
BR
(1)
BR7402520D0
(en)
DE
(1)
DE2415458C3
(en)
FR
(1)
FR2223849B1
(en)
GB
(1)
GB1448054A
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN112467399B
(en)
*
2020-11-18
2021-12-28
厦门大学
Positive-feed excitation multi-frequency-point novel circularly polarized millimeter wave broadband planar reflection array antenna
1973
1973-03-30
FR
FR7311615A
patent/FR2223849B1/fr
not_active
Expired
1974
1974-03-28
GB
GB1382574A
patent/GB1448054A/en
not_active
Expired
1974-03-29
BR
BR252074A
patent/BR7402520D0/en
unknown
1974-03-29
DE
DE19742415458
patent/DE2415458C3/en
not_active
Expired
Also Published As
Publication number
Publication date
DE2415458B2
(en)
1980-02-21
DE2415458C3
(en)
1980-10-09
FR2223849A1
(en)
1974-10-25
FR2223849B1
(en)
1977-08-26
DE2415458A1
(en)
1974-10-10
BR7402520D0
(en)
1974-11-19
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Legal Events
Date
Code
Title
Description
1977-01-26
PS
Patent sealed
1989-11-29
PCNP
Patent ceased through non-payment of renewal fee
