GB1530446A - Aerial feeders - Google Patents
Aerial feedersInfo
- Publication number
- GB1530446A GB1530446A GB253075A GB253075A GB1530446A GB 1530446 A GB1530446 A GB 1530446A GB 253075 A GB253075 A GB 253075A GB 253075 A GB253075 A GB 253075A GB 1530446 A GB1530446 A GB 1530446A
- Authority
- GB
- United Kingdom
- Prior art keywords
- waveguide
- grooves
- wall
- slots
- parts
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
- H01Q13/0233—Horns fed by a slotted waveguide array
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
- H01Q21/0043—Slotted waveguides
Landscapes
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
1530446 Aerials PLESSEY CO Ltd 8 Jan 1976 [21 Jan 1975] 2530/75 Heading H4A A linear aerial array comprises a row of radiating slots 4 arranged along one wall 5 of a rectangular waveguide 1, and a plurality of transversely disposed grooves 6 formed on the inside of the wall 7 opposite the wall 5. The waveguide 1 is constructed in two parts, a first part 2, which contains the grooves 6, and which is formed from a solid block of metal, and a second part 3, which contains the radiating slots 4, and which is secured to the part 2. The part 3 may also be formed from a solid block of metal. The metal used may be copper, and the parts may be formed by machining. The edges of the grooves 6 may be rounded. The mating surfaces of the two parts of the waveguide are stepped for alignment purposes, and may be silver plated. Preferably, they are welded together by means of an electron beam which is focused at a point inside the inner surface of the waveguide. The grooves 6 provide reactive loading, which results in enhanced group delay between slots. A greater beam swing for a given frequency change is thereby obtained. The array may be disposed along the focal line of a cylindrical parabolic reflector, and a series of external upstanding longitudinal fins 9 provide side-lobe suppression. The slots 4 as shown are of crossed form, for circularly polarized operation, but they can be of straight form if linearly polarized operation is required. Sideways extending fins are provided for cooling purposes, and these may be supplemented by ducts in the wall 7 of the waveguide, through which fluid is circulated.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB253075A GB1530446A (en) | 1975-01-21 | 1975-01-21 | Aerial feeders |
IT1936376A IT1054233B (en) | 1975-01-21 | 1976-01-19 | REFERENCES RELATED TO ANTENNA FEEDERS |
FR7601331A FR2298885A1 (en) | 1975-01-21 | 1976-01-20 | LINEAR ANTENNA NETWORK |
NL7600639A NL7600639A (en) | 1975-01-21 | 1976-01-21 | ANTENNA. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB253075A GB1530446A (en) | 1975-01-21 | 1975-01-21 | Aerial feeders |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1530446A true GB1530446A (en) | 1978-11-01 |
Family
ID=9741200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB253075A Expired GB1530446A (en) | 1975-01-21 | 1975-01-21 | Aerial feeders |
Country Status (4)
Country | Link |
---|---|
FR (1) | FR2298885A1 (en) |
GB (1) | GB1530446A (en) |
IT (1) | IT1054233B (en) |
NL (1) | NL7600639A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1291960A2 (en) * | 2001-08-28 | 2003-03-12 | Kabushiki Kaisha Toshiba | Antenna with heat sink |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3701162A (en) * | 1964-03-24 | 1972-10-24 | Hughes Aircraft Co | Planar antenna array |
US3643261A (en) * | 1969-10-09 | 1972-02-15 | Itt | Apparatus and method of compensating a long highly dispersive traveling wave transmission line |
FR2180523B1 (en) * | 1972-04-19 | 1976-10-29 | Thomson Csf |
-
1975
- 1975-01-21 GB GB253075A patent/GB1530446A/en not_active Expired
-
1976
- 1976-01-19 IT IT1936376A patent/IT1054233B/en active
- 1976-01-20 FR FR7601331A patent/FR2298885A1/en not_active Withdrawn
- 1976-01-21 NL NL7600639A patent/NL7600639A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1291960A2 (en) * | 2001-08-28 | 2003-03-12 | Kabushiki Kaisha Toshiba | Antenna with heat sink |
EP1291960A3 (en) * | 2001-08-28 | 2004-01-07 | Kabushiki Kaisha Toshiba | Antenna with heat sink |
Also Published As
Publication number | Publication date |
---|---|
IT1054233B (en) | 1981-11-10 |
NL7600639A (en) | 1976-07-23 |
FR2298885A1 (en) | 1976-08-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |