EP0237392B1 - Sendestelle, besonders für dekametrische Wellen - Google Patents

Sendestelle, besonders für dekametrische Wellen Download PDF

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Publication number
EP0237392B1
EP0237392B1 EP19870400328 EP87400328A EP0237392B1 EP 0237392 B1 EP0237392 B1 EP 0237392B1 EP 19870400328 EP19870400328 EP 19870400328 EP 87400328 A EP87400328 A EP 87400328A EP 0237392 B1 EP0237392 B1 EP 0237392B1
Authority
EP
European Patent Office
Prior art keywords
antennas
antenna
transmitters
center
console
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 - Lifetime
Application number
EP19870400328
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English (en)
French (fr)
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EP0237392A1 (de
Inventor
François Ursenbach
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.)
Thales SA
Original Assignee
Thomson CSF SA
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Filing date
Publication date
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Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Publication of EP0237392A1 publication Critical patent/EP0237392A1/de
Application granted granted Critical
Publication of EP0237392B1 publication Critical patent/EP0237392B1/de
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems

Definitions

  • the present invention relates to a transmission center provided, for example, to operate in HF and comprising transmitters associated with antennas distributed in a given space constituting what is generally called an antenna field.
  • Such centers are known, they include fixed antennas, transmitters grouped in a central building and a complicated interconnection between the transmitters and the antennas with means for switching, impedance transformation, radiofrequency energy transport distributed over the land with the disadvantages of construction, protection and operation that this entails.
  • a center is practically frozen from its conception because modifications and extensions are often very difficult.
  • the object of the present invention is to avoid or, at the very least, to reduce the drawbacks mentioned above.
  • a transmission center in particular in HF, comprising a central building with its central unit designed to manage the operation of the entire center and n (n integer greater than 1) antennas distributed over a field for form an antenna field, is characterized in that the antennas are rotary antennas and in that the center comprises n transmitters associated respectively with the n antennas according to an invariable one-to-one relationship, and n premises arranged respectively at the foot of the n antennas, serve as a shelter for the transmitter associated with the antenna at the foot of which they are arranged.
  • FIG. 1 represents an HF emission center according to known art.
  • This center includes, in particular, a central building B ′, fixed antennas Af1, Af2 ... formed of radiating doublets and distributed over the field, and an energy supply building, Bj, also called “energy substation ".
  • Bj also called “energy substation”
  • the low frequency energy of the substation is supplied to an energy distribution circuit, J, located in the central building, B ′, and is distributed, still in the central building, between the transmitters E1, E2 to give the radiofrequency energy to be emitted and between two circuits Jc and Jb intended respectively to supply the energy necessary for the switching of the radiating elements inside each antenna and the energy necessary for the night lighting of the pylons serving as supports for the antennas fixed.
  • J energy distribution circuit
  • the central building includes, in addition to the transmitters and circuits used to distribute the energy, a central unit, Uc, consoles, Cs, Ce1, Ce2, Cm, Ca, two control cabinets Cdm and Cda and two distribution matrices Ma and Mr.
  • the central unit, Uc includes a computer; it is intended to manage the operation of the entire transmission center.
  • the radiofrequency supply lines in strong lines, which connect the central building B ′ to the antennas Af1, Af2 pass through sets T1, T2 comprising in series a balun and an impedance transformer; the balun allows the passage from a coaxial line transmission on the matrix side Mr to a symmetrical line transmission on the antenna side, and the impedance transformer ensures the impedance adaptation, with a standing wave ratio as close to 1 as possible on the transmitter side.
  • the fixed antennas Af1, Af2 are associated with switching boxes which, under the control of the Cda cabinet itself controlled by the antenna console, Ca, make it possible to modify the firing axis of the antennas, by switching lines phase shift.
  • the central building b4 by the amount of resources it houses, is large (more than 60 meters long in the example described) and therefore poses production problems both with regard to its actual construction and its air conditioning.
  • the transmission center according to FIG. 2 does not pose this kind of problem because the central building is much smaller in size there, and the annex buildings associated with each antenna are all identical, of small size, have the same elements and therefore lend themselves to being produced in the form of a factory-made shelter transported by truck, with all the elements it must contain, to the places of operation.
  • FIG. 2 represents an HF emission center according to the invention.
  • This center comprises, in particular, a central building, B, rotary antennas, A1, A2, associated with premises, b1, b2, to form emission units, Ue1, Ue2, and an energy supply building , Bj, also called "energy substation”.
  • the low frequency energy from the substation is directly conveyed by supply lines to the premises b1, b2.
  • the transport of this energy because it is low frequency energy, is much easier and causes very much less loss than that of radio frequency energy between the central building and the antennas of the center according to Figure 1; in fact this transport can be carried out by flexible cables laid on the ground or buried whereas, in the case of figure 1, the transport of the radiofrequency energy was done by symmetrical lines, suspended at a height of several meters au- above the ground thanks to posts and insulators.
  • the central building B in FIG. 2 compared with the building B ′ in FIG. 1, contains only one central unit, U, consoles, Cs, C1, C2 and a distribution matrix Ma.
  • the central unit, U has a computer; it is intended to manage the operation of the entire transmission center. It is a simplified version of the central unit according to FIG. 1 since, as will appear in what follows, it does not have to manage the operation of a switching matrix between the transmitters and the antennas; in fact the matrix Mr according to FIG. 1 has completely disappeared in the emission center according to FIG. 2.
  • the console Cs is identical to the console Cs in FIG. 1, it is an audio console intended to define to which transmitters must be routed, by the matrix Ma the different audio frequency signals to be transmitted.
  • the consoles C1 and C2 relate respectively to the emission units Ue1 and Ue2; they include the elements of the Ce1, Ce2 consoles in FIG. 1 and the means for developing control signals for the light signaling of the antenna and control signals for the angular position of the antenna; these means are produced in the same way, but simpler (sending a number of bits corresponding to the angle of rotation to be obtained), than the part of the antenna console Ca in FIG. 1 relating to the preparation of signals for the firing angle switching command.
  • the rotary antennas A1 and A2 are shown in schematic view from above in FIG. 2. At their feet are the premises b1 and b2 which have been discussed further in this description. These premises are, in the example described, made from prefabricated panels and mounted on a concrete slab poured at the foot of each antenna at the same time as the base of the antenna.
  • the premises b1, b2 each contain an emitter, E1, E2, identical to the emitters of FIG. 1, with, at the output, a balun and an impedance transformer which are therefore grouped in the same room as the emitter and no longer scattered on the ground as in the case of Figure 1; the transmitters receive the audiofrequency signals from the matrix Ma and supply on the one hand the radiofrequency energy to the antenna and on the other hand receive consoles C1, C2 the remote control information and in return supply the remote signaling information which is sent to the consoles C1, C2.
  • An antenna rotation control cabinet located in the base of the antenna, is controlled by the remote control information received by the transmitter.
  • the antennas A1 and A2 are antennas with two vertical curtains of dipoles allowing the two of them to operate from 6 to 26 MHz. It should be noted that it is planned to produce a transmission center according to FIG. 2 but in which the antennas will include means for feeding only part of the dipoles in order to modify the radiation pattern of the antenna; in this other center It is also planned to place the energy substation in the central building.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Near-Field Transmission Systems (AREA)

Claims (2)

  1. Sendestation, insbesondere für dekametrische Wellen, mit einem Zentralgebäude, die eine Zentraleinheit (U) zur Überwachung des Betriebs der ganzen Station aufweist, und mit n Antennen (A1, A2) (n ist eine ganze Zahl größer 1), die im Gelände verteilt sind und ein Antennenfeld bilden, dadurch gekennzeichnet, daß die Antennen (A1, A2) drehbare Antennen sind und daß die Station n Sender (E1, E2), die je einer der n Antennen gemäß einer eineindeutigen unveränderbaren Beziehung zugeordnet sind, und n Räume (b1, b2) aufweist, die am Fuß der n Antennen angeordnet sind und den der Antenne zugeordneten Sender (E1, E2) aufnehmen, an dessen Fuß sie liegen.
  2. Sendestation nach Anspruch 1, dadurch gekennzeichnet, daß die Räume (b1, b2) und ihr Inhalt alle gleich sind.
EP19870400328 1986-02-18 1987-02-13 Sendestelle, besonders für dekametrische Wellen Expired - Lifetime EP0237392B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8602185A FR2594613B1 (fr) 1986-02-18 1986-02-18 Centre d'emission, en particulier en ondes decametriques
FR8602185 1986-02-18

Publications (2)

Publication Number Publication Date
EP0237392A1 EP0237392A1 (de) 1987-09-16
EP0237392B1 true EP0237392B1 (de) 1992-01-08

Family

ID=9332242

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870400328 Expired - Lifetime EP0237392B1 (de) 1986-02-18 1987-02-13 Sendestelle, besonders für dekametrische Wellen

Country Status (3)

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EP (1) EP0237392B1 (de)
DE (1) DE3775796D1 (de)
FR (1) FR2594613B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2570815C1 (ru) * 2014-06-26 2015-12-10 Открытое акционерное общество "Омский научно-исследовательский институт приборостроения" (ОАО "ОНИИП") Пункт управления приемными и передающими трактами узла радиосвязи декаметрового диапазона

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1303621A (de) * 1963-07-11 1973-01-17
DE3244256A1 (de) * 1982-11-30 1984-05-30 Robert Bosch Gmbh, 7000 Stuttgart Fm-gleichwellenfunksystem

Also Published As

Publication number Publication date
FR2594613A1 (fr) 1987-08-21
FR2594613B1 (fr) 1991-07-26
EP0237392A1 (de) 1987-09-16
DE3775796D1 (de) 1992-02-20

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