Communications: radio wave antennas – Antennas – With support for antenna – reflector or director
Patent
1989-04-13
1990-12-25
Hille, Rolf
Communications: radio wave antennas
Antennas
With support for antenna, reflector or director
248183, H01Q 3020, F16M 11120
Patent
active
049806971
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to supports for parabolic aerials, and in particular to such a support that permits basic positioning of the parabolic aerial in a simple and fast way, alignment of the parabolic aerial with different transmitters of the same orbit, the alignment being preferably performed by remote control means, as well as secure maintaining of the parabolic aerial in its position even during bad weather conditions.
2. Description of Related Art
Parabolic aerials being in use today for reception of satellite signals, the reception as a rule concerning conventional TV programs, are usually fixed or alignable only with difficulty for reception of signals from alternative satellites. There are however exceptions, but then we are talking about very qualified and expensive parabolic aerial equipments for commercial use. For private households wanting to have the possibility to receive TV broadcast transmissions from different satellites, a simple and inexpensive equipment has not previously been available. For such purposes there have only been fixed parabolic aerial supports, which in addition have been difficult to align with even only one particular satellite.
With the increasing amount of satellites retransmitting different TV programs, a strong demand has occurred for a simple and reliable equipment for the reception of such programs. Part of such an equipment is a simple, inexpensive and steady aerial support, which permits not only an easy and fast basic positioning of the parabolic aerial, relative to a satellite orbit, but which also permits adjustment of the parabolic aerial for reception of signals from different satellites of this orbit. Such an alignment should therefore be feasible from the place where the TV-watching takes place.
Supports of a previous and corresponding type needed to be provided with a big base. Support rods would be attached in different places, and then attached to the parabolic aerial, in different places directly or to some holder thereof. For positioning, the adjustment of many support rods has therefore been necessary. The support rods had to be shortened or extended, or given varied recesses For natural reasons such an attachment will be steady, but could also be hard to handle and it may be difficult to find a suitable place for the mounting thereof. It is therefore desirable to be able to mount the parabolic aerial on a rod, which is a conventional aerial mounting technique and permits a raised position of the actual aerial.
Most satellites, which broadcast TV programs of common interest, are in one and the same orbit around the equator. From a place, e.g. in Sweden, this orbit is perceived as elliptical. A parabolic aerial, which should be able to follow this orbit, therefore has to be provided with such a support that enables the parabolic aerial to carry out a movement corresponding thereto.
SUMMARY OF THE INVENTION
The present invention applies to a support for parabolic aerials which is simple, cheap and steady and which at the same time readily enables basic positioning and alignment of the parabolic aerial relative to concerned satellites. The support of the invention replies to the above needs and is of the kind that is set forth in the claims. What is in particular characteristic of the invention will also be evident from these claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described in more detail, in conjunction with the appended drawings, wherein:
FIG. 1 is a perspective front view, i.e. the face of the parabolic aerial, of a support according to the invention,
FIG. 2 is a side view of the support of FIG. 1, with a schematically drawn parabolic aerial,
FIG. 3 is a perspective back view of the support of FIG. 1, FIG. 4 is a view of the support of FIG. 1, straight from behind,
FIG. 5 is a view of the support of FIG. 1, straight from the front, provided with a mounted positioning device,
FIG. 6 is a perspective bottom view of the support of FIG. 1, and
FIG. 7 is a t
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Brown Peter Toby
Hille Rolf
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