SE510172C2 - Aperture coverage for a microwave antenna - Google Patents

Aperture coverage for a microwave antenna

Info

Publication number
SE510172C2
SE510172C2 SE9503541A SE9503541A SE510172C2 SE 510172 C2 SE510172 C2 SE 510172C2 SE 9503541 A SE9503541 A SE 9503541A SE 9503541 A SE9503541 A SE 9503541A SE 510172 C2 SE510172 C2 SE 510172C2
Authority
SE
Sweden
Prior art keywords
aperture
foil
cover
rigid
aerial
Prior art date
Application number
SE9503541A
Other languages
Swedish (sv)
Other versions
SE9503541D0 (en
SE9503541L (en
Inventor
Erich Nuding
Original Assignee
Ant Nachrichtentech
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 Ant Nachrichtentech filed Critical Ant Nachrichtentech
Publication of SE9503541D0 publication Critical patent/SE9503541D0/en
Publication of SE9503541L publication Critical patent/SE9503541L/en
Publication of SE510172C2 publication Critical patent/SE510172C2/en

Links

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

Abstract

The aperture includes a flexible foil (6) which is tensioned over the aerial aperture so that is assumes at least one inclined face w.r.t. the aperture plane. Pref. the foil is tensioned over a rigid, dielectric aperture cover (4) of the aerial (1, 2). Typically the foil is clamped by one or more struts (10) set on the rigid aperture cover. The aerial comprises a parabola-shaped, metal reflector (1), in whose focal point is located a feed system (2). A circumferential profiled ring (5) holds the cover hood flange and the reflector sealingly together.

Description

15 510172 2 en eller flera i förhållande till aperturplanet lutande ytor. One or more surfaces inclined relative to the aperture plane.

Folien förhindrar uppkomst av besvärande rimfrostskikt på den stela aperturtäckningen och belägges ej heller själv med kvarsittande rimfrost, eftersom den erbjuder en angreppsyta för vind, som håller folien i rörelse.The foil prevents the formation of troublesome hoarfrost layers on the rigid aperture cover and is not itself coated with persistent hoarfrost, as it offers an attack surface for wind, which keeps the foil in motion.

Uppfinningen förklaras nedan närmare med hjälp av ett på ritningen visat utföringsexempel.The invention is explained in more detail below with the aid of an exemplary embodiment shown in the drawing.

Figuren visar en delvis uppskuren sidovy av en parabolantenn.The figure shows a partially cut-away side view of a satellite dish.

Parabolantennen består på känt sätt av en parabolformig metallreflektor l och ett i dennas brännpunkt anordnat matar- system 2. Dessutom är en antennhållare 3 anordnad på parabol- reflektorns 1 baksida.In a known manner, the satellite dish consists of a satellite-shaped metal reflector 1 and a feed system 2 arranged at its focal point. In addition, an antenna holder 3 is arranged on the back of the satellite dish reflector 1.

I det visade utföringsexemplet är en stel dielektrisk täckhuv 4 påsatt på parabolreflektorn 1. En runtlöpande elastisk profilring 5 håller härvid flänsarna hos täckhuven 4 och parabolreflektorn l fukttätt tillsammans. Täckhuven 4 är här exempelvis välvd utåt. Den kan emelllertid ha varje annan härifrån avvikande form och kan exempelvis utgöras av en antennens apertur täckande platta. Över denna täckhuv 4 är en flexibel dielektrisk folie 6 spänd. Folien 6 kan exempelvis vara en duk av glasteflon (tjocklek ca 0,1 mm). Folien 6 är med sin kant infattad i en spännring 7, som anligger på täckhuven 4 och hålles vid flänsförbandet 5 medelst ett flertal fjädrande spännanord- ningar 8, 9.In the embodiment shown, a rigid dielectric cover 4 is attached to the parabolic reflector 1. A circumferential elastic profile ring 5 thereby holds the flanges of the cover 4 and the parabolic reflector 1 moisture-tight together. The cover 4 here is, for example, arched outwards. However, it may have any other shape deviating from it and may, for example, consist of a plate covering the aperture of the antenna. A flexible dielectric foil 6 is stretched over this cover 4. The foil 6 can, for example, be a sheet of glass fiber (thickness approx. 0.1 mm). The foil 6 is framed with its edge in a clamping ring 7, which abuts the cover hood 4 and is held at the flange joint 5 by means of a plurality of resilient clamping devices 8, 9.

Sásom framgår av figuren är folien 6 så uppspänd över täck- huven 4 att den bildar en eller flera i förhållande till antennens aperturplan med vinkeln a lutande ytor. Dessa avvinklade ytor kan åstadkommas därigenom, att folien 6 uppspännes på täckhuven 4 antingen i form av en kon eller en stympad kon eller en pyramid. Med en eller flera på täckhuven 4 ställda stöttor 10 kan folien 6 uppspännas i önskad form.As can be seen from the figure, the foil 6 is so tensioned over the cover hood 4 that it forms one or more in relation to the aperture plane of the antenna with the angle a inclined surfaces. These angled surfaces can be achieved by clamping the foil 6 on the cover hood 4 either in the form of a cone or a truncated cone or a pyramid. With one or more supports 10 placed on the cover hood 4, the foil 6 can be clamped in the desired shape.

Den i figuren visade ena stöttan 10 ger exempelvis folien 10 3 510 172 konform. De avvinklade planen hos folien 6 erbjuder angrepps- ytor för vindar av alla olika riktningar, så att den flexibla folien 6 alltid förblir i rörelse och rimfrostbeläggningar åtminstone delvis skakas av.The one support 10 shown in the figure gives, for example, the foil 10 conforms. The angled planes of the foil 6 offer attack surfaces for winds of all different directions, so that the flexible foil 6 always remains in motion and hoarfrost coatings are at least partially shaken off.

I det beskrivna utföringsexemplet är folien 6 så utformad, att den i efterhand kan pâsättas på en redan befintlig stel täckhuv 4. Den stela täckhuven 4 behöver emellertid ej nödvändigtvis finnas. Folien 6 kan i den beskrivna formen även pàsättas direkt på antennaperturen, varvid en på det centrala matarsystemet uppställd stötta spänner folien.In the described exemplary embodiment, the foil 6 is designed so that it can subsequently be applied to an already existing rigid cover hood 4. However, the rigid cover hood 4 does not necessarily have to be present. In the described form, the foil 6 can also be applied directly to the antenna aperture, a support arranged on the central supply system tensioning the foil.

Claims (1)

1. 510 172 4 Patentkrav Anordning för att täcka aperturen hos en mikrovågsantenn, med en flexibel folie, som uppvisar åtminstone en i förhållande till aperturplanet lutande yta, kännetecknad av att folien (6) är spänd över en stel dielektrisk aperturtäckning (4) hos 5 antennen (l, 2) med åtminstone en på den stela aperturtäck- ningen (4) påsatt stötta (10).Device for covering the aperture of a microwave antenna, with a flexible foil, which has at least one surface inclined relative to the aperture plane, characterized in that the foil (6) is tensioned over a rigid dielectric aperture cover (4) of 5. the antenna (1, 2) with at least one support (10) attached to the rigid aperture cover (4).
SE9503541A 1994-10-13 1995-10-11 Aperture coverage for a microwave antenna SE510172C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4436596A DE4436596C2 (en) 1994-10-13 1994-10-13 Aperture cover for a microwave antenna

Publications (3)

Publication Number Publication Date
SE9503541D0 SE9503541D0 (en) 1995-10-11
SE9503541L SE9503541L (en) 1996-04-14
SE510172C2 true SE510172C2 (en) 1999-04-26

Family

ID=6530673

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9503541A SE510172C2 (en) 1994-10-13 1995-10-11 Aperture coverage for a microwave antenna

Country Status (4)

Country Link
CH (1) CH689659A5 (en)
DE (1) DE4436596C2 (en)
IT (1) IT1275789B1 (en)
SE (1) SE510172C2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29610283U1 (en) * 1996-06-12 1996-08-29 Alcatel Kabel Ag Device for covering the aperture of an antenna
US8259028B2 (en) * 2009-12-11 2012-09-04 Andrew Llc Reflector antenna radome attachment band clamp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4215554C2 (en) * 1992-05-12 1994-10-06 Ant Nachrichtentech Cover for antenna radiators

Also Published As

Publication number Publication date
CH689659A5 (en) 1999-07-30
SE9503541D0 (en) 1995-10-11
ITMI952043A0 (en) 1995-10-06
SE9503541L (en) 1996-04-14
ITMI952043A1 (en) 1997-04-06
DE4436596C2 (en) 1998-04-09
DE4436596A1 (en) 1996-04-25
IT1275789B1 (en) 1997-10-17

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