Material that absorbs electromagnet radiation
SUBSTANCE: invention is related to the field of nanomaterials application. It is suggested to use carbon of bulbous structure as sensitive element of detector in terahertz range of waves that absorbs electromagnet radiation (EMR) in the range of frequencies of 30 - 230 THz.
EFFECT: improved performance characteristics.
The invention relates to the field of nanomaterials that can be used as a material absorbing electromagnetic radiation (EMR) in the range 30 - 230 THz, as a sensitive element of various sensors registering AMY in the terahertz wave band, as well as material shielding from ELECTROMAGNETIC radiation in this range.
The analogue of this material is carbon onion structure (ULS) in the wavelength range 500 MHz to 30 THz (US 2006241236, Al, G01S7/00, 26.10/1006) and natural mineral shungite (US 7239261, NC/00, 17.02.2005)containing as a component similar to fullerenes hemisphere in size from 15 to 100 And
Shungite as materials of natural origin have uncontrolled particle size and morphology of graphene structures. In addition, they contain large amounts of mineral components, which leads to a significant change in the quantitative and structural characteristics from field to field, and, ultimately, also affects the sensitivity of the final product derived from them.
The previously described receiving carbon onion structure (ULS) and its use as a material weakening of electromagnetic radiation in the frequency range 500 MHz to 30 THz. Carbon onion structure (ULS) is obtained by annealing of ultra-dispersed diamonds in temp is the temperature 1100-2000°C in a vacuum at a pressure not higher than 10 -2PA or in an inert atmosphere. (EN 2094370, SW 31/00, 27.10.97; Kuznetsov V.L., Chuvilin A.L., Butenko Yu.V. et. al // Chem. Phys. Lett. 1994. V.222. P.343; Kuznetsov V.L., Butenko Yu.V. // Ultrananocrystalline Diamond: Synthesis, Properties and Applications/ Ed. By O. Shenderova, D.Gruen. William Andrew Publishing, 2006. P.405).
The authors found that the above-described carbon onion structure (ULS) are able to absorb electromagnetic radiation (EMR) in the frequency range 30-230 THz, has low reflectivity and capable of almost completely loosen AMY in this field.
These first discovered the properties of previously known material (EN 2094370, SW 31/00, 27.10.97) make possible its use as a sensitive element of the detector in the terahertz wavelength range of the absorption of electromagnetic radiation (EMR) in the frequency domain in the range 30-230 THz.
The invention consists in that the carbon onion structure (ULS) is used as the sensitive element of the detector in the terahertz frequency range.
High absorbing properties and low coefficient of reflection of the material make it one of the possible materials sensitive material of the detector of terahertz radiation bolometer, as well as give incentives to use this material for shielding from ELECTROMAGNETIC radiation in the terahertz frequency range.
Getting the ULS is carried out by thermal annealing explosive nanomat is in (ON) in vacuum (EN 2094370, SW 31/00, 27.10.97).
Because the original nanodiamonds produced several tons per year, this method allows to obtain the ULS on a large scale. In the Institute of catalysis SB RAS was investigated the formation mechanism of carbon onion structure (ULS), developed methods of producing various kinds of ULS and sp2/sp3composites and investigated the properties of these materials.
Using transmission electron microscopy revealed that graphitization nanodiamonds begins when temperatures warm above 1200 K. the Sample is heated at 1170 K, is a diamond particles with an average size of primary particles of 4.2 nm. The distance between crystallographic planes is 2.06 A, which corresponds to the distance between the planes (111) diamond. Annealing at a temperature of 1800 K and above leads to the complete conversion of the particles Anastasov (ON) in the Urals. Obtained in this way the particles of the ULS are quasi-spherical multi-layered graphite-like particles formed by collapsed vysokodetalnye graphene sheets.
The study of the conductivity of the ULS and composites ON-ULS showed that they are characterized by the presence of hopping conductivity. Due to the peculiarities of these systems is the spatial dimensionality of the motion of charge carriers in them can vary from one-dimensional to Dumer the th. Figure 3 summarizes the data for the study of conductive properties of the ULS (also using data magnetoresistivity). You can see the hierarchical structure of a material on the basis of the Urals: the primary particles of the ULS size 4-6 nm (depending on the size of the source Anastasov ()) form aggregates with the size of 10-1000 nm, which in turn form the macroscopic particles of the sample. So, elementary particle is a primary particle; the aggregates formed by the primary particles of the Urals, formed as a result of annealing of the primary particles Anastasov with coherent and incoherent boundaries; the units are linked by van der Waals forces and electrostatic forces of interaction. Individual primary particles of the Urals within the same unit may have a common curved graphene membranes or contact between a C-C bonds. The number of carriers n may vary depending on the conditions of preparation of the sample in a fairly wide range: from 8*1021cm-1(for a sample obtained at a temperature of 1800 K) up to 3*1021cm-1(for the sample obtained at a temperature 2140). Free path length of electrons corresponds to the distance between the defects in the graphene layer, the region of localization of charge carriers is determined by the size of the unit the Urals.
The essence of the image is the shadow is illustrated by the following examples and illustrations.
Figure 1 - device (bolometer) for the registration of AMY in the terahertz range. Attached to substrate conductor that changes resistance with temperature change. Explorer caused to the sensitive layer, which represents the non-conductive suspension of the Urals in the polymeric matrix with a high thermal conductivity. The concentration of the Urals in the matrix must be below the percolation threshold, because otherwise the ULS will shunt conductor and introduce error in the measurement.
Figure 2 is another possible device bolometer. Here the ULS immediately converts the absorbed energy into electrical energy response of the detector. Is a substrate coated conductors. The wires caused the suspension of the Urals in the polymeric matrix with the concentration of particles ULS above the percolation threshold. The resistivity of the ULS is strongly dependent on temperature, therefore this option does not require additional conversion of thermal energy into electrical energy.
Figure 3 - transmission spectra in the range 30-230 THz samples for the ULS (DH1800) and in the matrix of CVG (thickness 0.25 mm, in parentheses indicate the weight content).
The absorption of infrared radiation in the range of 30-250 THz was investigated for samples and the Urals, distributed in a matrix of KBR.
Figure 3 compares the transmission spectra of the samples of the Urals and content 0.02-2 wt.%.
You can see that there is motrya similar to the composition of surface groups, the absorption of infrared radiation by the particles of the ULS is much more compared to similar or even higher concentrations.
Apparently the absorption of the incident EM radiation is not only due to its interaction with the surface groups of carbon sample, but due to energy dissipation in the internal structure, for example, through the activation of hopping conductivity in units of the Urals.
Figure 1-2 shows the device (bolometers) for reception of electromagnetic radiation (EMR) in the terahertz range using the above-described carbon onion structure.
The use of carbon onion structure as a sensitive element of the detector in the terahertz wavelength range of the absorption of electromagnetic radiation (EMR) in the frequency range 30-230 THz.
FIELD: electrical engineering.
SUBSTANCE: invention relates to devices for absorbing electromagnetic radiation and can be used in anechoic chambers, used for testing radio-, tele-, and other electrical devices. The invention is aimed at reducing weight and reflection coefficient of a device, which is made possible due to that, the device comprises a metallic shield, ferrite layer, a dielectric layer without dielectric losses placed between them and a matching dielectric packet of radar absorbing material made from dielectric layers with carbon filler. The carbon filler for the layers is in form of semiconducting vibrators. There are not less than ten layers and they have the same thickness. The first two layers of the matching packet do not have dielectric loss. In the dielectric of the next layers, there are vibrators, which provide for dielectric loss, concentration values of which, starting from the third to the middle layer, increase from 0.3·10-5±5% to an extreme value for the middle layer, equal to 2·10-5±5%. Concentration values of the semiconducting vibrators then decrease. The concentration value of semiconducting vibrators for the last layer is equal to concentration of vibrators of the third dielectric layer of the matching packet.
EFFECT: reduced weight and reflection coefficient of the device.
FIELD: electronics; computer engineering.
SUBSTANCE: invention relates to radio electronics and computer engineering. Material contains flexible base and protection coating. Protection coating consists of iron oxide and lead oxide compounds with filler made up from a mixture of glue, glass, ceramics, lacquer, enamels, paints or paint oil, natural polymer, heterorganic polymer, foam plastic and polyethylene. Film-forming material solutions are used as lacquer. Polystyrol, polyvinylchloride, polyurethane and epoxy resin may be used as foam plastic material.
EFFECT: effective protection of signal from electromagnetic and radiation effects, external and internal effects, reduced distortions while preserving friendly signal.
5 cl, 3 ex
FIELD: physics; radio.
SUBSTANCE: present invention pertains to radio engineering and can be used for making radio-electronic units for increasing efficiency of protecting a radio-electronic unit from electromagnetic interference and reducing its weight and size. The outcome is achieved by that, the radio-electronic unit with on-board shielding has a multi-layered printed circuit board, bearing connection strips, connection pads and radio components, forming functional zones. At least one of these functional areas can be shielded. The ground potential supply conductor is in the inner conducting layer of the multi-layered printed circuit board, made in form of metallised plane, electrically connected to the point of input the ground potential to the multi-layered printed circuit board. The shielded functional area, in at least the outer conducting layer of the multi-layered printed circuit board, is surrounded by a shielding barrier on the perimeter, electrically connected by structural element of interlayer connections to an extra metallised plane. The structural element of the interlayer connections is in form of a metallised slot for interlayer connections, passing along the printed shielding barrier, forming a conductive pattern in the layer of the multi-layered printed circuit board, perpendicular the base plane of the dielectric of the multi-layered printed circuit board. The width of the conductive pattern is equal to the thickness of the printed circuit board. The metallised slot, passing along the printed shielding barrier, is filled with solder. The thickness of the conductive pattern, perpendicular the base plane of the dielectric, is equal to the width of the slot. Printed shielding barriers are located on the perimeter of a hexagon or square and/or rectangle or along a circle. Functional areas are in a honeycomb order. In the functional areas there are separate radio elements or a group of radio elements.
EFFECT: increased efficiency of protecting the radio-electronic unit from electromagnetic interference and reduction of its weight and size.
6 cl, 11 dwg
FIELD: physics; radio.
SUBSTANCE: present invention pertains to radio-electronics and can be used in designing radio-electronic units, working under large dynamic loads. The outcome is achieved by that, the aircraft radio-electronic unit has component parts of the body, made from current conducting materials, as well as a board, inside the radio-electronic unit, bearing electronic units. The rear panel, top and bottom covers are in form of an integral design, with a flat-topped shape. The front panel has a closed rectangular design, non-detachably joined to the cover. The side panels have an inverted L-shaped longitudinal section and cup-shaped cross-section. The side panels alternate, with rate of alternating decreasing console length of the cross-sectional area. The side panels are joined to cover in three planes, forming a unipolar electric connector, fixed using fastening elements.
EFFECT: design of a structure of radio-electronic units, working under large dynamic loads, so as to increase efficiency of protecting the unit from electromagnetic interference and increase reliability of its operation due to optimum distribution of loads, optimum arrangement of bearing components in maximum reinforces places, which reduces the mass of the unit.
SUBSTANCE: module accommodates multilayer printed circuit board with N conducting planes and plated holes used to ensure interface electric connections, with high-frequency and low-frequency connectors, as well as printed wires and radio-frequency components grouped by three zones - analogue signal processing, digital power generation and digital signal processing. The first two are adjoins each other within the 1st to n-th conducting planes, while the third one is arranged thereunder occupying (n+1)-th to N-th conducting planes, where n≥6, N-n≥6. Each zone includes shielding earth planes and earth sites. Besides digital signal processing zone involves digital power sites and perimetritic shielding wires of barrier screen, while analogue signal processing contains analogue power wires. Digital power sites are connected to output pins of digital power voltage generators arranged in digital power generation zone. Common point of analogue power wires is connected to output pin of analogue power voltage generator arranged in analogue signal processing zone. Input pins of digital and analogue power voltage generators are electrically connected to output pin of input power filter provided in digital signal processing zone. Herewith the first of these connections is enabled by plated through hole, and the second one by related printed wire crossing zone interface of digital power generation and analogue signal processing. Shielding earth planes of digital signal processing zone are interconnected through plated blind holes, and connected to earth sites and shielding wires of barrier screen and coupled to Earth pin of low-frequency connector. Shielding earth planes of digital power generation zone are interconnected and connected to earth sites of the proper zone through plated blind holes, and to shielding earth planes of digital signal processing zone via plated through holes. Earth sites of analogue signal processing zone are connected to shielding earth plane in i-th conducting plane between the 1st and n-th conducting planes via plated blind holes, and connected to earth site of digital power generation zone by conductive bridge in the first conducting plane. Shielding earth plane of analogue signal processing zone in n-th conducting plane is connected to shielding earth plane of digital power generation zone arranged in the same conducting plane through printed bridge.
EFFECT: development of single-board design with analogue signal processing and digital power generation located on one side of multilayer printed-circuit board, and digital signal processing on the other side, and maintenance of onboard electromagnetic compatibility considering these requirements.
2 cl, 17 dwg
FIELD: physics, radio.
SUBSTANCE: invention concerns radio engineering and can be used at designing of radio-electronic blocks. Radio-electronic block with the intraplate screening, containing the structural printed-circuit board with the outside and interior conductor layers, bearing printing conductors and the electroradioelements grouped on screened by means of barrier and plane screens to the functional bands, and barrier screens are formed by the joined corresponding constructive devices of interlaminar linkings by the screening printing conductors executed in outside and interior conductor layers the friend under the friend with disruptures for printing conductors, traversing barrier screens, and plane screens are formed by the earthen planes serving by conductors of potential "ground" feeding for electroradioelements of screened functional bands, thus specified earthen planes located in one interior conductor layer are joined among themselves by earthen crosspieces and connected to a point of an application of potential "ground" on the structural printed-circuit board, And each screened functional band has the natural barrier screen located on its perimeter, and the natural earthen plane serving by its plane screen, located in a band sweepped by the barrier screen, thus earthen planes and barrier screens in screened functional bands structurally are not related with each other, and constructive devices of interlaminar linkings and devices of the barrier screen are executed in the form of the metallised groove of the interlaminar linkings transiting along a printing screening barrier with printed-circuit boards erected in it, electrically by uniters the adjacent plates and-or uniters the adjacent payments with a payment with an intraplate screening where one leg of the metallised groove concerns one screened band, and other leg of the metallised groove - to other screened band, Thus the place of transition to other leg of the metallised groove is isolated from one leg of the metallised groove on a thickness of the plate, between two screening bands in places of transition barrier screens are isolated from one leg of the metallised groove to other leg also, and barrier screens are related to a point of an application "ground" each one with an own wire with the argentiferous coat, transiting through a ferrite ring.
EFFECT: increase of efficiency of protection of the radio-electronic block from action of electromagnetic noises, decrease of its mass and dimensions parameters, simplification of manufacturing techniques and maintenance of high reproducibility of the radio-electronic block.
SUBSTANCE: invention is related to electronic units, namely, to simplification of such units. In particular, invention is related to electronic ballast resistors for gas discharge lamps, at that such ballast resistors have higher scattering of heat, reduced amount of components, minimised mechanical stress in electric components and improved suppression of electromagnetic interferences (EMI). Electronic unit having vessel is arranged with sealing against effect of environment, with possibility to suppress EMI and proper thermal connection between hot electric components and external heat radiator contained in unit.
EFFECT: improvement of electronic units operation, improvement of electronic ballast resistances operation for gas discharge lamps, reduction of mechanical stresses in such devices, lower EMI emitted by these devices.
4 cl, 6 dwg
FIELD: physics, control.
SUBSTANCE: present invention is related to electron field devices such as transmitters of technological processes parameters used for monitoring (routine inspection) of these processes. In particular, the present invention is related to electron field devices used in environment of technological plants, which may produce high level of electromagnet interference. Field industrial device (200) for operation under severe conditions comprises body (208) with electroconductive walls that surround cavity (206) with open end. Cavity may contain electronic module (292) based on printed circuit boards. Device comprises ready-fitted printed circuit board (270), which represents multilayer printed circuit board with through electric contacts and hidden layer (350) of grounding, which is electrically connected to body (202) for screening of electronic module (292) against electromagnet interference and provision of electronic module protection against effect of environment.
EFFECT: creation of body designs for transmitters of technological processes parameters, which possess improved resistance to effect of moisture and substances that pollute the environment, and also provide efficient filtration of electromagnetic field and radio interference.
30 cl, 9 dwg
SUBSTANCE: invention relates to electrical engineering and particularly portable shielded chamber design The invention may be used in research activities for assessing electromagnetic interference of different radio and electronic instruments. The side walls, top and bottom of the portable chamber are manufactured from current-conducting multi-layer corrugated material of "polymer film - current-conductive coating" type allowing for chamber stretching, compressing and smooth bending during installation at the working place. The content of multi-layer "polymer film - current-conductive coating"-Type material includes tape-like fragments absorbing electromagnetic radiation. The tape is manufactured from amorphous magnetic material.
EFFECT: reduction of chamber weight and cost, improvement of operation easiness due to avoidance of assembling and dissembling operations during chamber transportation from one room to another, preservation of required values of shielding effectiveness.
SUBSTANCE: method of protection against electromagnet radiation emitted by electronic devices, for instance, from mobile phones, consists in application of protective facility that influences upon electromagnet waves, such as virgin gold in the form of at least one gold nugget or in the form of gold sand. Application of suggested invention is elimination or considerable reduction of electromagnet radiation effect at biological object by means of facility that accumulates natural radiations that are harmless for human being and suppresses unfavourable harmful radiations.
EFFECT: elimination or considerable reduction of electromagnet radiation effect at biological object.
6 cl, 1 tbl
FIELD: physics, computing science.
SUBSTANCE: invention is aimed at efficiency enhancement of protecting device application due to enhancement of its operational functionality within saving protective properties. This technical result is ensured due to that the device for protection of electronics from electromagnetic emission contains a cooled screen made of superconducting material, delivery system of cooling agent and closed cover with inner cavity for arrangement of electronics consisting of at least two layers connected with each other with cavity formation between layers for the cooling agent. At that time the superconducting material, forming screen is applied as a cover over one of the surfaces, and closed cover is made with possibility of access to the inner cavity.
EFFECT: efficiency enhancement of device application aimed at protection of electronics from electromagnetic emission.
3 cl, 3 dwg
SUBSTANCE: thread for electromagnetic emission screening coating includes two core threads, one affixing thread, and thrums of piled-up thread placed across them symmetrically. The piled-up thread includes two core threads, one affixing thread, and thrums of chenille thread placed across them symmetrically. All threads are electroconductive. For selective screening of waves with different wavelegth, the thrums of piled-up thread, chenille thread and plain thread comprising the nap of the chenille thread have length of 1/4 wavelength of the screened electromagnetic waves. To screen radiation with definite wavelength specters, the said thrums have the same length distribution as is the electromagnetic wavelength distribution.
EFFECT: improved efficiency of screening properties of a thread.
8 cl, 1 dwg
FIELD: electromagnetic compatibility; electromagnetic field protection.
SUBSTANCE: material combining polymer base containing distributed particles of amorphous soft magnetic alloy Fe-Cu-Nb-Si-B or Co-Fe-Ni-Cu-Nb-Si-B of nanocrystalline structure and size from 1 to 100 micrometers according to invention, comprises of alloy particles containing nanocrystals of α-(Fe, Si) or ε-Co of volume density (0.6÷1.4)·10-5 1/nm3.
EFFECT: increased screening coefficient.
FIELD: engineering physics.
SUBSTANCE: proposed device that can be used to act upon various physical, chemical, and biological processes by structured electromagnetic radiation has substrate with topology formed thereon that incorporates set of concentric circles, each having radius where n is circle ordinal number. Topology is presents set of circles having radius R, each circle being point of location of equal number of adjacent circle centers; each of centers disposed on same circle is equally spaced from two adjacent ones and each center of radius R circle functions as center of similar number of concentric circles; radius of each circle equals Area of section whereon density of topology-forming lines is uniform may be as large as possible.
EFFECT: enhanced uniformity of electromagnetic radiation structurization along device surface.
6 cl, 5 dwg
FIELD: electronic equipment engineering, possible use for protection from effect of electromagnetic emission.
SUBSTANCE: current-conductive cover is applied to transparent substrate in form of mesh, having given dimensions and resistance.
EFFECT: increased protection efficiency.
5 cl, 1 dwg
FIELD: engineering of devices for screening from magnetic fields of industrial frequency and electromagnetic fields of radio-frequency spectrum, possible use to provide for electromagnetic compatibility of technical means and biological objects in different industrial branches.
SUBSTANCE: screen is made of ribbons of amorphous metallic alloy with beginning electromagnetic penetrability no less than 10-103. Ribbons are positioned overlapping each other with thickness not less than thickness of ribbon itself and held relatively to each other by means of elastic cover, having elasticity not less than 250 and adhesion value between device components not less than 1 MPa.
EFFECT: increased screening coefficient.
2 cl, 1 dwg
FIELD: cryo-electronics, possible use for producing volumes of increased magnetic frequency.
SUBSTANCE: bottom of screen is made in form of hollow cone with angle at vertex being less than 90°. Screen with heater is immersed into cooling agent, exposed until full cooling, then heated until transfer to normal state T=Tc+3...6K, where Tc - temperature of transfer of screen material from superconductive state to normal, after which heater is removed from screen at speed, equal to speed of temperature cooling front of screen material.
EFFECT: improved quality of magnetic screen, its weakening coefficient, due to decrease of remainder magnetic fields.
2 cl, 6 dwg
FIELD: engineering of protective radio-electronic means, possible use as a protective screen.
SUBSTANCE: reflector is made in form of rotor with radio-reflective surfaces connected thereto, made in form of blades. Blades are made of three layers of radio-transparent film, average layer of which is metallized by aluminum. In source state blades are wound on rotor body. On back end surface of rotor, rotation engine is mounted. Rotor is turned by means of traction, formed by rotation engine. Blades are driven into working state by centrifugal forces and following supercharge by remainder pressure from previously activated rotation engine. Blades can be capable of altering rotation angle relatively to their axis.
EFFECT: electromagnetic emission reflector has insignificant mass-dimensional characteristics, is capable of forming a radiolocation shadow of large dimensions and capable of maintaining maximal effectiveness of radiolocation interference in given direction along whole portion of object flight trajectory in space.
FIELD: production of the materials intended to protect people in industrial, administrative and living premises against action of electromagnetic fields of the radio-frequency range.
SUBSTANCE: the invention is pertaining to production of materials intended to protect people in industrial, administrative and living premises against action of electromagnetic fields of the radio-frequency range generated by operation of electrical circuits, electric appliances, mobile and radio telephones, and also for protection of the people against a geopathogenic environmental activity. The material based on schungite mineral represents a three-layered material, two exterior layers of which consist of a carton or a plastic sheet, on each side of which a printing ink containing fragments of a schungite mineral is applied, and in the capacity of the middle layer the aluminum foil is used. At that the layers are connected by a glue. To increase the strength of the three-layered material it is drawn for example through rollers or placed under a press. The printing ink contains particles of the schungite mineral, these particles have dimensions of 5-10 microns and make 90 % of the mass of the printing ink, in which they are dispersed. The printing ink containing the particles of the schungite mineral makes 6-7 % of the mass of the board or 3-3.5 % of the mass of the plastic material. The layer of the carton has a depth of 0.3 mm, and the layer of plastic material has the depth of 0.6 mm. The technical result of the invention is production of the material from the accessible raw being an effective and low-cost material for protection of people against action of electromagnetic fields of the radio-frequency range generated in the process of the operation of electric appliances, electrical circuits, at exploitation mobile and radiophones, and also from a geopathogenic action of the environment.
EFFECT: the invention ensures production from an accessible raw material of an effective and low-cost material for protection of people against action of the radio-frequency range electromagnetic fields generated during operation by different electrical appliances, circuits and telephones.
5 cl, 4 ex, 1 tbl
FIELD: physics, engineering.
SUBSTANCE: device has substrate, on which fractal topology is formed, with fractal level M no less than three. First fractal level module has 1+N circles with radius R, while center of each of N circles is placed on first circle, forming a central-symmetric shape, and circle with 2R radius, center of which matches center of first circle, and envelopes circles with radius R, and its coupling points with these circles are centers of placement of modules of first fractal level during construction of second level module, which envelope circle with radius 4R, and then topology is built in the same way. fractal topology is formed by slits, width and depth of which is no less than 0.1 mcm.
EFFECT: higher efficiency.
5 cl, 8 dwg
SUBSTANCE: invention relates to radiolocation, can be used in targets detection equipment against the background of active interferences. Technical result is achieved ensured by that into mentioned device of active interference compensation, there are additionally introduced concatenated delay circuit, the second correlator, the first envelope demodulator, threshold device and key, the second input of which is connected to outlet of multiplicator, and outlet - to the second inlet of summator, input of delay circuit is connected to output of the main aerial, and the second input of the second correlator - to the output of compensatory aerial, and also concatenated the third correlator and the second envelope demodulator, output of which is connected to the second input of threshold device, the first input of the third correlator is connected to output of main aerial, and the second input - to the output of compensatory aerial, herewith delay period in delay circuit is selected on the assumption of providing interferences decorrelation of accepted main and compensatory aerials such as τ3 > 1/"П", where "П" - bandwidth of reception path.
EFFECT: excluding of accumulation of inner noise of compensatory channel of active interferences interferences compensator during the absence on its inputs intercorrelated interferences.