DE19520910A1 - Parabolic receiving antenna appts. - Google Patents

Parabolic receiving antenna appts.

Info

Publication number
DE19520910A1
DE19520910A1 DE1995120910 DE19520910A DE19520910A1 DE 19520910 A1 DE19520910 A1 DE 19520910A1 DE 1995120910 DE1995120910 DE 1995120910 DE 19520910 A DE19520910 A DE 19520910A DE 19520910 A1 DE19520910 A1 DE 19520910A1
Authority
DE
Germany
Prior art keywords
antenna
heating
parabolic
heated
fluid
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.)
Ceased
Application number
DE1995120910
Other languages
German (de)
Inventor
Rainer Blum
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.)
Blum GmbH
Original Assignee
Blum GmbH
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 Blum GmbH filed Critical Blum GmbH
Priority to DE1995120910 priority Critical patent/DE19520910A1/en
Publication of DE19520910A1 publication Critical patent/DE19520910A1/en
Ceased legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/02Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion

Abstract

The parabolic antenna with the feed part (10) is connected to the receiving equipment by a coaxial cable. The parabolic reflector (12) focusses the electromagnetic signals, from a transmitter or relay satellite, on to the feed part or point. This reflector and the feed point are connected to one another, and to the supporting arm (14). The back of the reflector is provided with a heat-insulating and electrically insulating layer (16). This is weather-resistant and made, for example, from a polyurethane foam (18).

Description

The invention relates to a parabolic receiving antenna. Such antennas are used in large numbers especially for reception via satellites broadcast television programs used. For this purpose the Parabolic receiving antennas with a specific orientation or bearing mounted on roofs, walls, windows and the like, so outdoors.

When using the parabolic receiving antenna under dry weather conditions satisfactory reception, i.e. sufficient signal-to-noise Distance, is possible, so this does not always apply when it is wet Weather too, depending on how cheap or unfavorable the antenna is attached and how exactly it was aligned. If the convex reflector surface of the antenna body is wet or carries a snow load, the Reception be disturbed.

The invention therefore proposes that the parabolic receiving antenna with a To equip the heating device, the heating capacity of which is sufficient to to prevent reception disturbances caused by weather conditions.  

A first possibility is to electrically close the antenna body heat. For this, a heating coil can be placed on the back of the antenna body are applied. The electrical power required can AC network are taken, the voltage is appropriate in the harmless low-voltage range is transformed; the supply line can then be integrated into the antenna cable. It makes you more useful wise rectify the operating voltage to disturb the reception signal to minimize nals. But you can also use a solar panel or Charge several accumulators, from which they can be used if necessary te power is taken - it goes without saying that this intermediate This is because the performance is needed when the solar panels deliver the least energy.

Another option is to heat the antenna body exchange heat with a heated fluid. The fluid can be gaseous be, for example air, or liquid, for example water. In this case, the Antenna body to attach coils of heat from the heated fluid be flowed through. In the case of water, for example, the heating pipe queue connected to a central hot water supply of a building be because in general the hot water is constantly in circulation even if no hot water is drawn from the building.

In the above examples, the antenna body is heated through heat conduction. Of course, the heating is also done Heat radiation possible, for example by means of an electric infrared beam lers, or also by convection, such as by means of a warm air blower.

In certain embodiments - such as connecting heating coils to a central hot water supply - the Para is heated bol receiving antenna regardless of whether a need for it exists or not. But for reasons of energy efficiency, you will Only heat the antenna if the weather has done so physically required (and the antenna actually for reception is used). You can then do the heating depending on the outside temperature, from the relative humidity, or a combination of both Taxes.  

Exemplary embodiments are described below with reference to the accompanying drawings gene explained in detail.

Fig. 1 shows a standard parabolic antenna in perspective view Rückan, prepared for mounting on an outer wall or the like and provided with a heating according to the invention,

Fig. 2 is a partial cross-sectional view of the reflector of the antenna of FIG. 1 with an electrical resistance heater,

Fig. 3 is similar to FIG. 2 shows a modification with Heizfluidschlangen,

Fig. 4 is a block diagram of the overall arrangement including the receiver connected to the dish antenna.

Referring to FIG. 1, the parabolic antenna comprises the actual antenna part 10, which via a (not shown), for example, a cable Koaxialka bel, is connected to a receiving device. By means of the parabolic reflector 12 , the electromagnetic signals that are emitted by a transmitter or a relay satellite are bundled onto the antenna part. The parabolic reflector and the antenna part are connected to one another and to a support arm 14 , which is prepared for mounting on a part of the building.

According to the invention, the rear of the parabolic reflector is provided with a heat-insulating and electrically insulating coating 16 , which of course must also be weather-resistant; a polyurethane foam is suitable for this purpose, for example.

In the embodiment according to FIG. 2, electrical heating conductors 18 are embedded in the insulating coating; To simplify the drawing's representation (see also FIG. 4) three meandering loops connected in series are shown, but it goes without saying that a larger number can be provided for the purpose of homogenizing the heating.

The current is supplied via lines 20 , 22 separated from the coaxial cable, which are guided through the hollow support arm.

In the embodiment according to FIG. 3, heating coils 24 are also embedded in the insulating coating in the form of meanders, through which a heat transfer fluid flows. Water is preferably used because of its high heat storage capacity and thermal conductivity. Again, only a relatively small number of heating coils is shown, which of course could be increased. In the drawings it is not shown that the heating coils are preferably arranged in such a way that the heat is emitted as uniformly as possible and a "cold point" does not form near the outlet from the parabolic reflector. The supply and discharge of the heating fluid can also take place here via pipes which are laid through the hollow support arm.

Fig. 4 shows the block diagram in a largely schematic form. The central control unit 30 controls the energy supply unit 32 , which in the case of electrical heating can be an actuator fed from the supply network which, under the control of the central unit 30, only outputs so much power to the heating coil that one from a sensor element 34 detected temperature is maintained. It is therefore preferable to regulate the temperature. In the case of a fluid heating, the unit 32 can be, for example, a four-way mixing valve, as is used in regulated central heating systems, and which is adjusted depending on the temperature detected by the sensor element.

The central control unit 30 can be provided with additional components, for example time switches, in order to interrupt the heating during preselected time intervals. In addition, a main switch can be seen before that the system is only put into operation when the device fed from the parabolic antenna, for example a television set 36 , is actually switched on.

Claims (10)

1. Parabolic receiving antenna to be arranged outdoors, characterized by a heating device with sufficient heating power to prevent reception interference caused by weather conditions.
2. Antenna according to claim 1, characterized in that it is electrically heated.
3. Antenna according to claim 1, characterized in that it is Heat exchange is heated with a heated fluid.
4. Antenna according to claim 3, characterized in that the fluid Is warm air.
5. Antenna according to claim 3, characterized in that the fluid Hot water is.
6. Antenna according to claim 1 or 2, characterized in that the Heating device is a radiant heater.
7. Antenna according to claim 2, characterized in that the Heating device comprises a heating coil, which on the antenna body is applied.
8. Antenna according to claim 7, characterized in that the Heating coil can be fed with electrical power via the antenna cable.
9. Antenna according to one of the preceding claims, characterized characterized in that the convex back of the antenna body at least can be heated on part of its surface.
10. Antenna according to one of the preceding claims, characterized characterized in that the heating device depending on the Temperature and / or the relative humidity can be controlled at the location of the antenna is.
DE1995120910 1995-06-08 1995-06-08 Parabolic receiving antenna appts. Ceased DE19520910A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995120910 DE19520910A1 (en) 1995-06-08 1995-06-08 Parabolic receiving antenna appts.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1995120910 DE19520910A1 (en) 1995-06-08 1995-06-08 Parabolic receiving antenna appts.

Publications (1)

Publication Number Publication Date
DE19520910A1 true DE19520910A1 (en) 1996-12-12

Family

ID=7763909

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995120910 Ceased DE19520910A1 (en) 1995-06-08 1995-06-08 Parabolic receiving antenna appts.

Country Status (1)

Country Link
DE (1) DE19520910A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19702794A1 (en) * 1997-01-27 1998-07-30 Ivo Beran Low=voltage heating sheet for self=adhesion to satellite television reception dish(es)
FR2792117A1 (en) * 1999-04-09 2000-10-13 Raymond Dubuc Parabolic antenna snow removing heater element having circular resistive heater element rear parabolic antenna face stuck and two conductor cable connected.
EP2273607A1 (en) * 2009-06-25 2011-01-12 Eldon Technology Limited Apparatus and systems for heating a satellite antenna reflector

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE839514C (en) * 1941-03-19 1952-06-23 Telefunken Gmbh Mehrfachdipolantenne
DE2035211A1 (en) * 1970-07-16 1972-01-20 Bbc Brown Boveri & Cie
DE3525488A1 (en) * 1985-07-17 1987-01-29 Dynamit Nobel Ag Surface reflector antenna which can be heated electrically
DE9001820U1 (en) * 1990-02-03 1990-04-19 Hagenbusch, Guenther, 7313 Reichenbach, De

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE839514C (en) * 1941-03-19 1952-06-23 Telefunken Gmbh Mehrfachdipolantenne
DE2035211A1 (en) * 1970-07-16 1972-01-20 Bbc Brown Boveri & Cie
DE3525488A1 (en) * 1985-07-17 1987-01-29 Dynamit Nobel Ag Surface reflector antenna which can be heated electrically
DE9001820U1 (en) * 1990-02-03 1990-04-19 Hagenbusch, Guenther, 7313 Reichenbach, De

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DE - L 20790 VIIIa/21a4 - 20.12.56 *
LANGE, Werner R., PETTINGER, Marcel: Optimale Steuerung von Antennenheizungen bei Satelliten-Empfangsanlagen. In: ntz, 1985, Bd.38, H.8, S.562-565 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19702794A1 (en) * 1997-01-27 1998-07-30 Ivo Beran Low=voltage heating sheet for self=adhesion to satellite television reception dish(es)
FR2792117A1 (en) * 1999-04-09 2000-10-13 Raymond Dubuc Parabolic antenna snow removing heater element having circular resistive heater element rear parabolic antenna face stuck and two conductor cable connected.
EP2273607A1 (en) * 2009-06-25 2011-01-12 Eldon Technology Limited Apparatus and systems for heating a satellite antenna reflector

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8131 Rejection