RU227460U1 - HF broadcast station - Google Patents

Abstract

The utility model relates to radio engineering. The technical result consists in providing an automated radio broadcasting station in the HF range and is achieved by the fact that the radio broadcasting station, consisting of an in-phase horizontal band antenna on rigid vibrators with an aperiodic reflector, is placed on a platform rotating along a circular single-rail track on support trolleys with an independent drive, changing the spatial direction supplying a radio broadcasting signal in azimuth in a 360° sector. On the lower horizontal part of the metal structure there is a compartment with equipment containing a radio broadcast transmitter, which, through a beamforming circuit that forms the necessary amplitude-phase distributions, and a line of power amplifiers according to the number of power points, is connected to the active elements of the antenna, which can be either each of the vibrators of the canvas antennas, or formed groups of vibrators. Control of the transmitter, the drive of the support trolleys, the equipment power supply system, the supply of broadcast programs to the transmitter, as well as telemetry of the station’s operation is carried out automatically via a radio channel through a radio module. 2 ill.

Description

The utility model relates to radio engineering, in particular to long-distance radio broadcasting (foreign broadcasting) systems in the high frequency range.

Currently, domestic radio broadcasting in the high frequency range is practically not carried out. From the achieved level of previous generations of technology, it is known that radio broadcasting was carried out mainly from the territories of powerful specialized radio centers, which included up to hundreds of transmitting antennas and dozens of transmitters. Such radio centers were located in various regions of Russia, and the territory of many of them exceeded a hundred hectares of land suitable for agriculture. Large areas were necessary because the antennas placed on them had significant vertical and horizontal dimensions, and their effectiveness depended on the presence of a free, flat forefield. It is important that in order for the equipment to operate in a wide sector of azimuth angles, up to 360°, it was necessary to have, at best, 5-7 such antennas at the radio center for each transmitter. The same territories housed a developed infrastructure of radio centers, including transmission equipment workshops, a power system, extended feeders, switching equipment, developed high-frequency grounding systems for each antenna, cooling pools, etc. The scale of long-distance radio broadcasting was determined by geopolitical motives and was ensured by the duration of broadcasting on many languages of the world for almost all countries of the globe.

The idea of restoring long-distance radio broadcasting has been promoted by concentrating equipment in a single module and developing its manufacturability, using multiplexing to facilitate the energy conditions of transmitters, and combining electrical and physical methods for changing broadcast directions.

The problem to be solved by the claimed utility model is the transformation of a radio broadcasting module, which is a complex of radio transmitting equipment together with a rotating antenna, into an unattended HF radio broadcasting station. In the proposed utility model, this is realized by automating the processes of antenna positioning, as well as setting up and controlling the entire complex of equipment.

The basis of the broadcasting module is a two-way in-phase antenna of a rigid design, which allows the rotation of the entire tower structure on which the antenna vibrators are mounted to rotate the radiation pattern in a 360° sector. (Short-wave antennas / Aizenberg G. Z., Belousov S.P., Zhurbenko E.M. et al.; edited by G. Z. Aizenberg. - 2nd ed. revised and added. - M.: Radio and communication, 1985. - 536 pp. 246-250). Such an antenna is used in the patent “An all-round ground-based antenna and a method for implementing a multifunctional heating stand” (RU 2772933 C2).

The module design includes a compartment with generating equipment (broadcast transmitter and a line of power amplifiers), a beamforming circuit and a power source. The broadcast transmitter is connected to the antenna through a beamforming circuit that forms the amplitude-phase distribution of power to the antenna array, and a line of power amplifiers according to the number of power points in the array. Both each vibrator and the sections into which the antenna array can be divided can be connected to the amplifiers. The broadcast program signal is supplied via a cable channel. Power supply to the equipment is provided by connecting to an external source. The module includes a mechanism for rotating the antenna around its axis in the horizontal plane to move the radiation pattern in azimuth and change the position of the service area. To do this, four support trolleys, each equipped with its own electric drive, can move along a single-rail circular track with a diameter of 60 m.

The essence of automation is that the control of the transmitter, the drive of the support trolleys, the equipment power supply system, the supply of broadcast programs to the transmitter, as well as the telemetry of the station’s operation is carried out automatically via a radio channel through a radio module. The technical result of the module conversion is to provide an automated HF radio broadcasting station.

The essence of the utility model is illustrated by drawings.

In fig. Figure 1 shows a general view of the broadcasting station, the basis of which is the antenna: SGD 4/4 RA (isometric projection): 1 - metal structure of the antenna, 2 - rigid vibrators of the antenna canvas, 3 - aperiodic reflector, 4 - support trolleys with independent drive, 5 - compartment with equipment, 6 - ring single rail track.

In fig. 2 reveals the contents of the compartment with equipment: 7 - radio broadcast transmitter, 8 - beamforming circuit, 9 - line of power amplifiers, 10 - outputs from each power amplifier for supplying a signal to the antenna elements, 11 - radio module, 12 - radio module antenna, 13 - control unit electric drive of the support trolleys, 14 - control signal outputs for each support trolley, 15 - controlled power supply, 16 - power input to the module, 17 - telemetry unit.

The device works as follows. Preparing the radio station for operation consists of two stages - the construction and installation of a rotating SRS antenna with a power supply system for active elements and the manufacture, installation and configuration of equipment compartment 5. Electricity enters the equipment compartment to the power supply 15 controlled from the radio module 11 through the power input 16. Program broadcast is supplied to the transmitter 7 from the radio module 11. From the transmitter 7, the modulated broadcast signal passes through the circuit for generating the amplitude-phase distribution 8 to the power amplifiers 9 and then from the outputs 10 to the active elements of the antenna, which can be either each of the vibrators of the antenna web 2 , or formed groups of vibrators (sections). The electromechanical drive of the module (support trolleys 4 with an independent drive) is powered from the control unit for the electric drive of the support trolleys 13 through outputs 14, which allows the entire structure to be rotated along a circular single-rail track around its axis, changing the spatial direction of the broadcasting signal in azimuth in a 360° sector. Telemetry unit 17 monitors the operation and condition of both individual nodes and blocks and the entire radio station.

The unjustified and almost complete rejection of radio broadcasting at low, medium and high frequencies led to the liquidation of a large number of technical radio broadcasting facilities on the territory of Russia and an unprecedented reduction in the potential for information services in the territories of foreign countries. The current situation has seriously updated the problems of information security, which allows us to conclude that it is necessary to restore radio broadcasting as an accessible means of disseminating information

The useful model “HF Broadcast Station”, which solves the complex technical problem of generating a broadcast signal and delivering it via an ionospheric radio channel to the service territory, allows you to automatically create a broadcast zone in one of the directions of a circular sector of corners on a single-hop ionospheric path at a distance of about 3000 km - an ellipse with dimensions of approximately 1000x1500 km.

Claims (1)

HF broadcast station, characterized by the fact that it is a compact, universal modular design, which consists of an in-phase horizontal band antenna on rigid vibrators with an aperiodic reflector, which is placed on a platform rotating along a circular single-rail track on support trolleys with an independent drive, changing spatial direction of the broadcasting signal in azimuth in a 360° sector; on the lower horizontal part of the metal structure of the module there is a compartment with equipment containing a broadcast transmitter, which, through a beamforming circuit that forms the necessary amplitude-phase distributions, and a line of power amplifiers according to the number of power points, is connected to the active elements of the antenna, which can be either each of the vibrators antenna sheets, or formed groups of vibrators (sections), characterized in that the control of the transmitter, the drive of the support trolleys, the equipment power supply system, the supply of broadcast programs to the transmitter, as well as the telemetry of the station’s operation is carried out automatically via a radio channel through a radio module.