EP0337234A1 - Gehäuse (Radom) für den Hornstrahler von Nachrichtnübertragungsantennen - Google Patents

Gehäuse (Radom) für den Hornstrahler von Nachrichtnübertragungsantennen Download PDF

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Publication number
EP0337234A1
EP0337234A1 EP89105807A EP89105807A EP0337234A1 EP 0337234 A1 EP0337234 A1 EP 0337234A1 EP 89105807 A EP89105807 A EP 89105807A EP 89105807 A EP89105807 A EP 89105807A EP 0337234 A1 EP0337234 A1 EP 0337234A1
Authority
EP
European Patent Office
Prior art keywords
radome
film
flange
films
horn
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.)
Granted
Application number
EP89105807A
Other languages
English (en)
French (fr)
Other versions
EP0337234B1 (de
Inventor
Pascal Lapeyre
Alain Bourgeois
Eric Begout
Eric Chauvin
Raymond Gueuret
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.)
Alcatel CIT SA
Original Assignee
Alcatel Thomson Faisceaux Hertziens SA
Alcatel Telspace 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.)
Filing date
Publication date
Application filed by Alcatel Thomson Faisceaux Hertziens SA, Alcatel Telspace SA filed Critical Alcatel Thomson Faisceaux Hertziens SA
Publication of EP0337234A1 publication Critical patent/EP0337234A1/de
Application granted granted Critical
Publication of EP0337234B1 publication Critical patent/EP0337234B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome

Definitions

  • the invention relates to an illumination source radome for a telecommunications antenna.
  • the primary sources of illumination for telecommunication antenna used in particular in radio-relay systems and satellite links must be waterproof (protection against bad weather, dust, external agents, etc.); temperature variations between the different elements of a source cause, under certain pressure conditions, condensation on the walls of the source. The presence of water or foreign bodies as well as the corrosions consecutive to this phenomenon generate degradations of the radioelectric functioning.
  • the radiant horn an integral part of these sources, is protected on its opening by a film called radome; the entire source is pressurized and constitutes a closed enclosure.
  • the radome used must not disturb the operation of the horn (mismatch, influence on the radiation, polarization characteristics).
  • the present invention relates to a radome system designed to provide improved sealing of a radiating horn, while retaining the radioelectric properties of this horn.
  • the radomes generally used consist of: - a film of dielectric material (polytetrafluoroethylene, polyethylene terephthalate); - an adapter flange allowing fixing by screws or by gluing to the opening of the horn to be protected.
  • the film is subjected to external forces due to: - the pressure prevailing inside the source (pressurization); - at ambient outside pressure.
  • radome ruptures are usually caused by aging of the radome in the sun, by significant variations in temperature, or by heavy hailstorms.
  • the object of the invention is to overcome these drawbacks.
  • the invention proposes, for this purpose, an illumination source radome for telecommunication antenna comprising an external film, characterized in that it comprises a second internal film pierced with a hole of small diameter.
  • the two films are secured to each other at their periphery by means of an external flange and a counter-flange disposed on either side of the first film, the counter-flange being disposed between the two films.
  • the films are joined to the flanges and counter flange by gluing so as to ensure a seal.
  • these different elements form a removable and interchangeable kit.
  • the films used are made of dielectrics combining good mechanical and climatic resistance which does not alter the radioelectric performance of the elements to be protected.
  • the radome, object of the invention constitutes a removable and interchangeable kit shown in FIGS. 1 and 2. It is composed: - an external flange 2, a first external film 1, for example made of polyester, - an intermediate flange 3 or counter flange - a second internal film 5, for example made of polyester, pierced with a small diameter hole 4 (a few millimeters for example).
  • the flange 2 and the counter flange 3 are joined together, for example using screws 10.
  • a seal 8 for example an O-ring, to allow rapid change of the radome system.
  • the materials constituting films 1 and 5 and their thickness are selected to withstand the following stresses: - solar radiation ; - climatic environment (rain, frost, etc.); - use of a defrosting system.
  • a radome according to the invention was produced for the primary source of an antenna 16 meters in diameter, the horn of which, for example a corrugated horn, has a diameter of 507.5 millimeters.
  • the radome 6 consists of: - a flange 2 with a diameter of 620 millimeters, an external film 1 with a diameter of 620 millimeters and a thickness of 125 micrometers made of polyethylene terephthalate, - a counter-flange 3 with a diameter of 620 millimeters, - an inner film 4 with a diameter of 590 millimeters, and a thickness of 75 micrometers in polyester, pierced with a hole with a diameter of 3 millimeters.
  • the radome 6 thus formed is made integral with the source 7 using fixing means 11, for example screws.
  • the assembly as shown in FIG. 4 has been tested under the radioelectric aspect and under the climatic aspect with defrosting equipment based on a pulsed hot air circuit.
  • the hot air is conveyed on the surface of the outer film 1 by a toric nozzle 9 anti-icing that distributes it around the periphery of the horn opening 7.
  • the radome of the invention practically does not affect the copolarization and the counter-polarization proper to the horn.

Landscapes

  • Details Of Aerials (AREA)
EP89105807A 1988-04-07 1989-04-03 Gehäuse (Radom) für den Hornstrahler von Nachrichtnübertragungsantennen Expired - Lifetime EP0337234B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8804604 1988-04-07
FR8804604A FR2629951B1 (fr) 1988-04-07 1988-04-07 Radome de source d'illumination pour antenne de telecommunication

Publications (2)

Publication Number Publication Date
EP0337234A1 true EP0337234A1 (de) 1989-10-18
EP0337234B1 EP0337234B1 (de) 1993-11-24

Family

ID=9365067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89105807A Expired - Lifetime EP0337234B1 (de) 1988-04-07 1989-04-03 Gehäuse (Radom) für den Hornstrahler von Nachrichtnübertragungsantennen

Country Status (4)

Country Link
EP (1) EP0337234B1 (de)
DE (1) DE68910861T2 (de)
ES (1) ES2047053T3 (de)
FR (1) FR2629951B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011083951A1 (de) 2011-10-04 2013-04-04 Rohde & Schwarz Gmbh & Co. Kg Krafteinleitungsring für geschäumte Radome

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814038A (en) * 1953-07-29 1957-11-19 Westinghouse Electric Corp Lightweight antennas
US3427626A (en) * 1965-11-12 1969-02-11 Whittaker Corp Rigid sectional radome and method for erecting
DE1907754A1 (de) * 1969-02-15 1970-08-20 Gruenzweig & Hartmann Antennenschutzhaube wie Radom od.dgl.
DE2629369A1 (de) * 1976-06-30 1978-06-29 Hoechst Ag Verfahren und anordnung zur kontrolle der dichtigkeit von behaeltern und rohrleitungen
GB2107127A (en) * 1981-03-25 1983-04-20 British Aerospace Windows and radomes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2814038A (en) * 1953-07-29 1957-11-19 Westinghouse Electric Corp Lightweight antennas
US3427626A (en) * 1965-11-12 1969-02-11 Whittaker Corp Rigid sectional radome and method for erecting
DE1907754A1 (de) * 1969-02-15 1970-08-20 Gruenzweig & Hartmann Antennenschutzhaube wie Radom od.dgl.
DE2629369A1 (de) * 1976-06-30 1978-06-29 Hoechst Ag Verfahren und anordnung zur kontrolle der dichtigkeit von behaeltern und rohrleitungen
GB2107127A (en) * 1981-03-25 1983-04-20 British Aerospace Windows and radomes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN *

Also Published As

Publication number Publication date
FR2629951B1 (fr) 1990-11-16
DE68910861T2 (de) 1994-03-17
ES2047053T3 (es) 1994-02-16
EP0337234B1 (de) 1993-11-24
FR2629951A1 (fr) 1989-10-13
DE68910861D1 (de) 1994-01-05

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