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Electromagnetic wave data transceiver device and system comprising plurality of said devices Electromagnetic wave data transceiver device is designed for installation on a post and includes an antenna, an electronic module connected to the antenna and designed to transmit and receive data via electromagnetic wave signals converted by the antenna. The antenna is formed in a flexible band which may be curved in the longitudinal direction thereof, passing from an open position in which the flexible band is open at one end leaving an opening for the lateral passage of a post to a closed position in which the flexible band takes up a cylindrical form. The device also includes closing means for setting the closed position of the flexible band. The invention also provides a system formed by a plurality of said the transceiver devices installed on vertical portions of posts. |
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On-board hybrid mirror antenna Disclosed is an on-board hybrid mirror antenna having a reflector in the form of a cutting from a paraboloid of revolution, having a plane of symmetry which passes through the focal axis of the paraboloid, and a radiating antenna array, the normal of the aperture plane of which, in the plane of symmetry of the antenna, is inclined by an angle β towards the reflector relative to the focal plane of the paraboloid, and consisting of radiators, the number of which is equal to the number of partial beam patterns, where the centres of the radiators are located equidistant from each other, wherein the radiators in the aperture plane of the radiating antenna array are spaced apart in the plane of symmetry of the antenna by a distance which is (cosβ)-1 times longer than the distance between centres of the radiators. |
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Invention relates to antenna engineering. The triaxial rotary support comprises an azimuthal rotary mechanism consisting of a column in form of a steel pipe on which is mounted an azimuthal drive, around which an azimuthal truss rotates on bearings, and an elevation rotary mechanism consisting of an elevation drive and an elevation rotary platform consisting of an elevation axle in form of a steel pipe and a first steel plate welded thereto, to which a beam with two mirror rotation supports is mated, and a second steel plate welded on the opposite side to the elevation axle, to which is attached a counterweight and a mounting bracket for a screw-jack, a mounting bracket for a screw-jack lug attached to a mirror, a screw-jack with a drive, wherein the azimuthal and elevation rotary mechanisms and an inclination angle mechanism are provided with angular position sensors. |
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Compact ultra-wideband antenna Compact ultra-wideband antenna is designed to set up a radio link near the surface of a human body between devices that do not have an unobstructed line of sight, which consists of two symmetric radiating elements situated on one side of a dielectric layer, and a differential strip power supply line situated on both sides of said dielectric layer, the upper and lower sides of which tightly adjoin additional upper and lower dielectric layers, respectively, and two connecting plates with interlayer connections, capable of creating electrical contact between ends of said radiating elements, placed on outer surfaces of said upper and lower dielectric layers; wherein the symmetric radiating elements have recesses at the ends, as well as recesses inside such that the radiating elements are U-shaped, and the radiating elements have additional recesses on their inner and outer periphery. |
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Controlled lens antenna system Invention relates to microelectronics and specifically to compact antenna devices used in mobile communication devices and in other equipment operating in the millimetre range. The controlled lens antenna system, having an antenna on an integrated circuit and a dielectric lens antenna configured to generate a plane wave, wherein the dielectric lens antenna is composite and includes a body with relative permittivity e1 and an insert with relative permittivity e2, where e1<e2, in form of a hyperboloid to facilitate conversion of a spherical wave from a source located at the focal point of the hyperboloid into a plane wave, and a deflecting plate in form of a ceramic plate with contacts, which is configured to deflect the formed plane wave by an arbitrary angle by changing the relative permittivity of parts of the ceramic plate under the effect of a different applied voltage. |
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Dipole antenna with capacitive load Dipole antenna comprises a dipole, a matching device, a capacitive load and a counterweight; the matching device is in form of two separate elements - an extension coil and a transformer, each made on its own separate closed magnetic core. |
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Multichannel radio monitoring device Invention relates to radio electronics. The multichannel radio monitoring device comprises an antenna array consisting of N antennae, outputs of which are connected in series to N analogue receiving units, N analogue-to-digital converters (ADC) and N DDC, as well as k controlled-delay data storage units. The present invention comprises the following steps: first, preliminary processing of a wideband signal through frequency decomposition thereof using full reconstruction analysis filter banks, reducing redundancy and storage during a required time for delayed access; second, picking up narrow-band signals by reading from the controlled-delay data storage units of the required frequency-time fragment of the wideband signal, decompression thereof in data decompression units; reconstructing, using synthesis filter banks, space-time processing in space-time signal processing units and transmitting signals to the user via interfaces with client signal processing means for end processing thereof. |
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Wave antenna array has an array of radiators and an additional array; the radiators are situated in nodes of the main flat two-dimensional grid and are in form of multi-section couplings of waveguide sections that are filled with dielectric materials; the waveguide sections have axes that are parallel to each other and perpendicular to the plane of the array; the additional array is made of passive scatterers situated outside the radiators in nodes of the additional flat two-dimensional grid, which is parallel to the main flat two-dimensional grid, wherein the passive scatterers are in form of electric and magnetic dipoles whose axes are perpendicular to the plane of the array. |
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Method of producing metamaterial (versions) Group of inventions relates to microelectronics - the technology of producing laminates - and can be used in making electrodynamic and/or antenna devices, having in their structure a layered material with specific electrical properties and which facilitate distortion of the operational electromagnetic field. The method does not include etching a sacrificial layer (liquid or plasma-chemical etching). The method of producing metamaterial includes forming, on n supporting plates, n protective layers on which are alternately formed m+1 levels of resonance structures and m dielectric layers, respectively; separating the formed alternating levels of resonance structures and dielectric layers with protective layers from the corresponding n supporting plates; successively connecting the separated alternating levels of resonance structures and dielectric layers with a protective layer through radio-frequency dielectric plates by assembling using alignment marks located in each level of resonance structures. |
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Rotating antenna dome on aircraft Rotating antenna dome, made in form of a caisson and designed to be mounted on the fuselage behind the wing using pylons, has a central unit - a supporting cube consisting of top and bottom lining panels of the caisson, two side members and two supporting ribs. The main supporting member - octahedron - is placed in the supporting cube coaxial to a cowling. Four vertical faces of the octahedron, arranged in parallel to the walls of the side members and the ribs of the caisson, are fastened to vertical beams mounted on the side members and the supporting ribs of the caisson. The octahedron is bounded by top and bottom flanges which are supported by stiffening members located on each face and connected by outer shelves of the faces with the walls of the side members and supporting ribs by fittings. The inner shelves of the flanges have elements for fastening the lower flange to the bearing of the rotating mechanism. The fastening elements are located between the stiffening members. |
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Antenna device and antenna selection method Invention relates to a mobile long-range communication device. The mobile long-range communication device for aircraft for establishing long-range communication in the radio-frequency range with a base station has at least a first and a second antenna, an electromagnetic screen between the first and second antennae, a logic component, wherein the first and second antennae are capable of transmitting and receiving long-range communication signals in the same frequency band, and wherein the logic component selects if the first or second antenna is used for long-range communication with a base station. |
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Amplifying lens for double-reflector antenna Invention relates to antenna engineering, particularly large-diameter antennae and large parabolic reflectors, and can be used in fields where there is need to considerably increase antenna sensitivity for observing small-size sources. The engineering problem is increasing sensitivity of a double-reflector antenna for observing point sources without considerably increasing overall weight of the structure and enabling deployment of the structure in space. Said problem is solved by combining a double-reflector antenna with an additional amplifying lens, which is a truncated right circular cone whose diameter is greater than the diameter of the main parabolic reflector, the height is approximately 3 times shorter than the diameter of the main parabolic reflector, and a cone-shaped convergent mirror for the additional amplifying lens. |
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Invention relates to radio communication and particularly to methods of increasing stealthiness of radio-frequency radiating means operating with a pseudorandom operational frequency readjustment signal. The transmitting end divides an input signal into information units presented in binary form; a reflected signal arises when a signal is emitted into space at the frequency position fj of the pseudorandom operational frequency readjustment cycle when an airborne radio reconnaissance means enters the lobe of the beam pattern of the antenna of the radio-frequency radiating means, said signal also propagating towards the antenna of the radio-frequency radiating means. After the radio-frequency radiating means emits the radio signal on said pseudorandom operational frequency readjustment cycle, the frequency of the emitted radio signal fj changes to fk. The frequency of the previous pseudorandom operational frequency readjustment cycle fj for transmission is freed, while simultaneously turning on a receiver tuned to fj, and analysing presence of a reflected signal. If a reflected signal is present, the radio-frequency radiating means turns off its transmitter for the time during which the airborne radio reconnaissance means flies through lobe of the beam pattern of the antenna. |
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Shared source antenna and method of making shared source antenna for generating multiple beams Invention relates to antenna engineering. A shared source antenna for simultaneous generation of multiple of beams comprises multiple elementary sources spaced apart by a constant interval (P) and a parabolic reflector, wherein the elementary sources are combined into a number of identical subarrays, each subarray comprising a number of peripheral elementary sources and a central elementary source, wherein each subarray is designed for beam synthesis and has a single excitation source, wherein elementary sources of each subarray are connected to each other on phase through electromagnetic radiation of the central elementary source to peripheral elementary sources, and two series subarrays comprise at least one common elementary source and are offset by a distance which corresponds to a predefined number of intervals (P), which is greater than or equal to one. |
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Reflector array and antenna having said reflector array Invention relates to a reflector array for a reflector array antenna. The reflector array comprises a plurality of elementary radiating elements forming a reflecting surface with no abrupt transitions, wherein each radiating element of the reflecting surface is selected from a set of predetermined consecutive radiating elements, called the pattern, the first (1) and last (9) elements of the pattern correspond to one phase, modulo 360°, and are identical, and the radiating elements (1, 2, 3, 4, 5, 6, 7, 8, 9) of the pattern have a radiating structure of metal patch type and/or of radiating aperture type, that gradually changes from one radiating element to another adjacent radiating element, the change in the radiating structure comprising a succession of gradual growths of at least one metal patch (25) and/or at least one aperture (27) and appearances of at least one metal patch (25) in an aperture (27) and/or at least one aperture (27) in a metal patch (25). |
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Method of detecting reflected signal during radar location Method of detecting a reflected signal at one or more points in space involves periodically emitting ultra-wideband pulses using at least one transmitter on a signal from at least one clock generator connected to the corresponding transmitter; using receivers, at more than one point in space, to pick up electrical signals, recording and storing said signals in memory; processing the picked up signals using a processing unit; using at least one receiver to pick up instantaneous values of signals at instances determined by another corresponding clock generator connected to said receiver, with a pick up period different from the period of emitting pulses. |
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Ultra-wideband compact antenna Antenna includes an earthing plate and a radiating element and is characterised by that the earthing plate is situated directly over the surface of the human body and is directed in parallel or at an angle to the surface of the human body; the radiating element, which is made of conducting material, is situated directly over the earthing plate and is directed maximally close to a perpendicular position relative to said earthing plate; wherein the radiating element is almost U-shaped, cuts are made on lateral sides of said element on the inside and outside; and said antenna further includes a top horizontal element configured for electrical connection of the top ends of the radiating element; and said radiating element is fed through a strip line. |
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System comprises a device with a function of wireless power receiving and sharing of data, consisting of : a small-sized low-profile structure that combines a resonator and an antenna, hereinafter referred to as an integrated structure; the matching circuit of the resonator impedance, rectifier, charge regulator; the matching circuit of the antenna impedance, data transceiver; the device with the function of wireless energy transmission consisting of a transmitting resonator, a matching circuit of the impedance, the signal generator; the energy source; the remote device of data exchange consisting of: an antenna and a data transceiver. |
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Carbon-containing formula for radioprotective materials Formula contains 5-16 wt % of ultradisperse active carbon with an average size of particles of 5-100 nm and specific surface are of 16-320 m2/g, a dispersing agent in the form of soda glass aqueous solution and a stabilising agent in the form of a saturated solution of . Finely-dispersed colloidal graphite can be introduced into the formula additionally. The invention uses the formula property to absorb radio-wave electromagnetic radiation at its equal distribution inside the hard matrix of a constructional material or at its application onto the surface of radar absorbent structures or constructional materials. |
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Jumpers manufacturing method fit for serial production as per roll-type production Method suggested in the invention can be applied, in particular, for manufacturing of printed circuit boards containing antennas for radio frequency identification (RFID). In jumpers manufacturing method as per roll-type production on a substrate (1) of electric insulating material a conductive pattern (2) is applied of electroconductive material, for example, of metal foil, at that at least one strip lug (3) is made of the above electroconductive material, not fixed at the substrate and coupled to the conductive pattern (2) by its one end, this lug is bended onto a section of the conductive pattern (2) which is subject to electric insulation from the above strip lug (3) and the above strip lug (3) is connected electrically to another target section (5) of the conductive pattern (2). |
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Invention relates to antenna engineering and is intended to receive and transmit linearly polarised radio signals. The antenna comprises a radiator which can radiate a linearly polarised radio signal in the operating band of the antenna, a support element and at least a first director mounted on the support element. The director has a housing which is electroconductive in the operating band of the antenna. The shape of the housing is such that its projection on a plane which is orthogonal to the direction of maximum antenna gain overlaps the bounded portion of the plane. |
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Planar leaky-wave antenna includes a planar dielectric waveguide, an array of parallel metal strips, a coupling element with a transmission feed line, a stripline conductor with rows of lateral stripline protrusions on the left and right side, wherein the planar dielectric waveguide has one dielectric layer, the stripline conductor lies on the outer surface of the dielectric waveguide in the same plane as the strips of the array, the rows of lateral stripline protrusions on the left and right side of the stripline conductor are offset relative each other along the edges of the stripline conductor by a distance equal to half the repetition period of the protrusions, the centre stripline of the array serves as the stripline conductor, and the distances between the longitudinal axis of the centre stripline and the centres of the nearest striplines of the array on the left and right side are equal. |
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Circularly polarised cophased antenna array Invention relates to radio engineering and specifically to cellular mobile radio communication. The circularly polarised cophased antenna array comprises at least three identical antenna elements, each including, in one plane, two rectangular loops, each with a cut, the cuts being included in the loops of the antenna element symmetrically about the geometric centre of the antenna element near the feed points thereof, situated in the middle of adjacent sides of the rectangular loops, wherein the position of the cuts in the loops of the antenna elements relative the feed points of the antenna element determines the direction of rotation of circular polarisation. The length of the sides of the rectangular loops of the antenna elements is selected in the range of 0.2λ…0.24λ, where λ is the average wavelength of the operating range; the end of the conductor of each loop of the antenna element, opposite the feed point thereof, is connected to a section of a conductor perpendicular to adjacent sides of the rectangular loops of the antenna element, the length of said section lying in the range 0.01λ…0.04λ, change in said length being used to adjust input resistance of the antenna element, wherein the perimeter of the loop of the antenna element is selected in the range (0.9…1)λ, which, in the presence of a cut, leads to generation of a current distribution travelling wave in the loop of the antenna element, which facilitates circular polarisation. |
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Superlight antimultipath device Invention relates to choke ring devices used in global navigation satellite systems (GNSS) to inhibit multipath effect. The superlight antimultipath device consists of three metal layers having the shape of hollow cylinders, wherein the layers are joined by a continuous conducting base and a height of about a quarter wavelength, wherein the base is a thin layer of metal coating, and the shape of the device is made of light radioparent material with low relative permittivity, and said radioparent form has openings for passing wires or metal pins. |
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Airborne antenna feeder system Invention relates to radio engineering and specifically to antenna equipment, designed to service on-board radio equipment for short-range navigation and landing aircraft in the ultra-high frequency range. The airborne antenna feeder system comprises transceiving antennae with corresponding beam patterns, connected to each other by a feeder system which includes amplifiers, radiofrequency feeders connected to the on-board radio equipment, wherein the transceiving antennae are mounted on the front and rear edges of the left-side and right-side wings of the aircraft and have weakly directional beam patterns that are mirror symmetric relative to the longitudinal plane of symmetry of the aircraft, wherein the antennae are designed to be mounted on an object such that the beam patterns of adjacent antennae in the horizontal plane overlap at a level which provides a stable radio link, wherein the output of each antenna is connected to the radio signal carrier frequency-independent input of the served radio equipment, in which there is a device for selecting and turning on a combination of operating antennae, which facilitates processing of radio signals received by the operating antennae and generation of a resultant received information signal, frequency division of transmission and reception signals, alternate turning on of one or two operating antennae during signal transmission. |
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Radio communication device having loop antenna Invention relates to radio communication devices. The device for facilitating radio communication in a portable device comprises: an antenna configured to be connected to a first signal lead and a second lead and having a conducting track with a loop structure, a first conducting part and a second conducting part, wherein the first conducting part is electrically connected in parallel to the second conducting part, and the first conducting part has a first electric length which provides differential resonance, having a first operating frequency band; and an earthing element, having a first end and a second end, and having a first signal lead at the first end which is connected to the antenna, and a second lead at the first end which is connected to the antenna, wherein the first conducting part has an area situated near the first signal lead and the second lead and is configured to have electromagnetic coupling with the first signal lead and the second lead, and the second conducting part has an area situated near the first signal lead and the second lead and is configured to have electromagnetic coupling with the first signal lead and the second lead. |
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Multi-station passive location radio system (industrial vision) Multi-station passive location radio system (MRS PL) consists of a structured antenna array and a high-performance computer. The structure of the array is similar to that of the retina. The array consists of active cells which are grouped into separate antenna fields, signals from which are transmitted to controllers of a second and, further grouped likewise, to the next layers until the input of the computer. The controllers and the computer employ a spatial selection algorithm. The technical result of the operation of the MRS PL is provided by the dimensions of the separate antenna fields, which must be much larger than the operating wavelength, used to achieve the required sensitivity of the noise attenuation principle by selecting the number of array cells. To reduce the amount of computations when scanning, the computer employs a sector detection algorithm, which is the spatial selection algorithm with another input parameter. |
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Apparatus for subglacial reception of satellite navigation system signals Invention relates to use of satellite navigation systems in high latitudes. The apparatus for subglacial reception of satellite navigation system signals by an object in a subglacial position includes raising the object to the ice cover and breaking the ice in the area of the antenna device, the apparatus being characterised by that it includes an extension device which is a hollow pipe with diameter of up to 150 mm, in the top part of which a perforated ring is attached and inside it there is a steam pipe and a pipe with high-pressure air, wherein the perforated ring has mixing nozzles for directed outlet of steam for penetrating breakage (melting) of ice from below in order to form a hole and feeding high pressure air in order to remove sea water from the formed hole to allow the antenna to come out at a given height, determined by a contact sensor for detecting contact of the extension device with ice, wherein the extension device moves in the vertical plane and is rotated by a reducing gear from an electric motor and is fixed at a given point on the cockpit of the underwater object, and has an antenna for receiving satellite navigation system signals; the output of the antenna is connected to the input of a computing unit, which determines the height of the extension device, selects the optimum mode of supplying the heat carrier and control thereof depending on the given steam drilling mode, and calculates observed coordinates of the underwater object. |
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Active phased antenna array digital beamforming method when emitting and receiving chirp signal Invention may be used in radar stations with active phased antenna arrays (APAA) during digital beamforming and use as probing pulsed wideband chirp signals. In the transmit operating cycle of the APAA, quadrature components of the complex envelope of the chirp signal are generated; the signal is converted to digital in each quadrature component; the digital signal is distributed across antenna elements; the obtained signal is converted to analogue and its spectrum is transferred to the low frequency region, amplified and emitted by an antenna element to form a resultant beam pattern (for transmission); in the receive operating cycle of the APAA, signals received in each m-th antenna element are amplified; their complex envelopes are selected; the obtained complex envelopes of the signals are converted to digital; a resultant beam pattern (for transmission and reception) is obtained for each digital reading of the complex envelope of the received signal. |
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Method of producing electrically conducting surface on polymer roll material Invention relates to sputtering of thin films in vacuum with the help of reeling machine, particularly, to production of RFID-antennas for radio-frequency identification marks. Proposed method comprises the stage of selective surface copper spraying with further copper layer build-up by electrolytic process. Selective spraying of polymer material is conducted in vacuum with preliminary application of mask coat on polymer surface, perfluorine polyether being used as the polymer, and with thermal copper spraying on polymer substrate. |
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Radiator has an exciting dielectric waveguide and a dielectric plate, one of the faces of which is the radiating aperture; the exciting waveguide is in form of a symmetrical divider on dielectric waveguides, and the dielectric plate placed between waveguides of the divider is in form of a symmetrical flat wedge, along the faces which dielectric waveguides of the divider are arranged. The plate is in form of a flat wedge which is cut off at its apex side, wherein the distance from the cut off face of the wedge to the junction point of exciting wedges of the waveguides of the divider is a multiple of an odd number of radiation half-waves. The dielectric waveguides of the divider arranged along the side faces of the wedge are made with a cross-section which gradually decreases or increases while approaching the radiating face of the wedge. |
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Invention relates to radio engineering. The antenna system comprises three electrical antennae or three magnetic antennae with mutually orthogonal polarisation on X, Y and Z axes, three multipliers, an adder, three balanced modulators and a three-axis accelerometer; receiving outputs of the antennae are each connected to the first inputs of the multipliers; outputs of the multipliers are each connected to separate inputs of the adder; the output of the adder is the receiving output of the antenna system; the transmitting input of the antenna system is connected to first inputs of the balanced modulators; outputs of the balanced modulators are each connected to transmitting inputs of the antennae; the sensitivity axes x, y and z of the accelerometer are parallel to polarisation axes X, Y and Z of the antennae, respectively; outputs of the accelerometer on axes x, y and z are each connected to second inputs of the multipliers and balanced modulators, connected to antennae polarised on axes X, Y and Z, respectively. Polarisation vectors of the antenna system for transmission and reception are automatically adjusted on the vertical independent of the spatial orientation of the antenna system itself, thereby achieving matched polarisation of antenna systems of the receiver and the transmitter spaced apart in the horizontal plane. |
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Antenna system with partial metal coating of radiotransparent protective cover Invention relates to radio engineering, and specifically to antenna systems. The antenna system with partial metal coating of a radiotransparent protective cover comprises a reflector, a low-noise amplifier with a frequency converter and a device for pointing radiation onto an object, wherein the system further includes a protective radiotransparent cover which corresponds to the configuration of antenna reflector and is mounted on a platform which rotates on a circle, wherein half or part of the cover is metal coated and is the antenna reflector, and the low-noise amplifier with a frequency converter is mounted on a supporting arm which allows movement thereof in the horizontal and vertical plane; the protective cover is fastened with tension cables to dampen wind loads; the system further includes a compressor with controlled temperature conditions for maintaining the corresponding temperature conditions inside the cover. |
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Invention relates to antenna engineering. The mirror-horn antenna has a planar reflector in form of top, bottom and middle metal plates mounted parallel to each other, and a parabolic cylinder made of metal and mounted between the bottom and top plates and has ohmic contact with said plates, and its axis is perpendicular to the planes of said plates; the middle plate has an edge situated between the parabolic cylinder and its focus, wherein the gap between the edge and the parabolic cylinder has a constant width; a feed element mounted between the top and middle plates and made in form of at least one exciter and a wall made of metal and situated between the bottom and middle plates, perpendicular to said plates; the wall is also perpendicular to the plane of symmetry of the guide of the parabolic cylinder; the top and middle plates have straight edges which are perpendicular to the plane of symmetry of the guide of the parabolic cylinder and lie at a distance from the peak of the guide of the parabolic cylinder which is greater than the focal distance thereof; a radiator in form of two rectangular metal plates whose edges are joined to the straight edges of the top and middle plates, wherein the planes of the rectangular plates have an intersection line lying between the top and middle plates. |
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Variable operating mode antenna system Phased antenna arrays include balance bridges which form a division-summation network circuit, and each aperture quarter is broken down to 2n parts which form n subarrays from pairs of adjacent parts, where n=1, 2, 3…, wherein each part has its own second-type distributor which feeds, through each of its waveguide outputs, main waveguides of linear first-type distributors of its part only, wherein inputs of the second-type distributors of adjacent pairs of parts in each aperture quarter are connected to outputs of balance bridges, the balance arms of which become independent inputs of the subarrays. Inputs of said bridges for n=1 are directly connected to the output of a microwave adder and for n>1 are connected through one or more balance bridges to the output of the microwave adder. |
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Multi-pole antenna, having a dielectric substrate on which four identical half-wave dipoles are arranged symmetrically on a circle, each made in form of a resonance section of a periodic microstrip line with the width at the centre which is equal to a quarter of the average wavelength and linearly narrowing towards the peripheral region. |
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Antenna for receiving and amplifying signals Invention relates to antenna engineering, particularly to design of microstrip antenna devices, and can be used in satellite navigation systems, particularly GPS-GLONASS, in communication and information transmission systems and as an antenna array element. The antenna consists of a disc radiator, an annular halver, a low-noise amplifier, an antenna housing and a protective dome/cap, wherein the antenna housing is common for the disc radiator, the annular halver and the low-noise amplifier, with a compartment for the low-noise amplifier, wherein in the compartment for the low-noise amplifier on the inner side of the cover of the housing, there is an absorber for attenuating waveguide modes in the compartment for the low-noise amplifier, and the top part of the housing has a depression in which a spring-loaded silver-plated spacer is placed on the entire periphery of the top part of the housing, which provides reliable electrical contact on the entire periphery of the annular halver. |
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Broadband "antenna-dome" system Invention relates to antenna feeder devices, primarily to broadband "antenna-dome" systems. The broadband "antenna-dome" system includes a direction-finding linearly polarised antenna, a mechanism for turning the antenna towards a target and a dome in form of a cap with a bulging surface and a single-layer wall, equipped with an assembly for rigidly mounting to an aircraft, wherein the polarisation plane of the antenna coincides with the direction-finding plane, and in the radiotransparent zone either the outer surface of the cap is in form of a logarithmic spiral, the pole of which coincides with the centre of rotation of the antenna, and the inner surface of the cap is selected to be congruent to the outer surface, or the outer and inner surfaces of the cap are non-congruent and are in form of logarithmic spirals with poles which coincide with the centre of rotation of the antenna. |
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Detector for detecting objects with nonlinear elements Invention relates to search devices and is designed for detecting objects based on reception of signals resulting from secondary re-radiation with change in the spectrum of the probing signal. The detector has first and second generators which emit probing signals at close frequencies f1 and f2, and a receiver with a receiving antenna which receives signals in a frequency range close to the frequencies f1 and f2. To eliminate nonlinear combination-type interference and interference associated with blocking effects, probing signal antennae further include ferrite valves. Between the receiver and the second probing signal generator, there is a compensator for the second probing signal at the input of the receiver, consisting of two directional couplers, a variable attenuator and a variable phase-changer. A decision on detection of an object with nonlinear elements is made if a combination-type component at frequency 2f1-f2 or 2f2-f1 is detected at the input of the receiver. In another mode, the decision is made if the receiver detects a signal at frequency f1, which is modulated with frequency F, wherein the probing signal at frequency f2 is modulated with frequency F. |
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Apparatus for protecting narrowband transmit-receive channels of radio systems Invention relates to radio engineering. The apparatus for protecting narrowband transmit-receive channels of radio systems, having main and additional antennae connected by a subtracting element, includes N≥1 more main and additional antenna pairs and N≥1 subtracting elements, as well as (N+1) narrowband filters which form (N+1) mutually orthogonal identical arms for the device, each consisting of one main and additional antenna pair and series-connected subtracting element and narrowband filter, wherein all antennae are resonant and identical to each other, the antennae in the main and additional antenna pair are connected to the subtracting element and the filter, made in form of joined sections of a shielded waveguide in which a traveling-wave mode is established; communication of the main and additional antennae with the corresponding waveguide subtracting element in each arm is carried out such that in-phase signals from said antennae excite, in the waveguide, anti-phase transverse antinodes of the waveguide distribution of the electromagnetic field. |
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Invention relates to a device for redirecting an electromagnetic field received by an antenna, or beams formed by the antenna. The device for splitting an electromagnetic field received by an antenna system comprises: one or more blades for splitting the electromagnetic field into a plurality of segments corresponding to separate beams, and redirecting said plurality of segments for detection by a plurality of detectors, wherein at least one of the one or more blades has a first surface and a second surface which cross on the edge, and wherein the edge of at least one blade is arranged to split the field incident on the blade by redirecting at least a first segment of the field incident on the first surface in a first direction and at least a second segment of the field incident on the second surface in a second direction different from the first direction. |
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Compact excitation assy for creating circular polarisation in antenna and method of its making Invention relates to antenna circular polarisation generator. Proposed assembly comprises distribution orthomode converter and tapper. Note here that said orthomode converter called OMT is asymmetric component and comprises main waveguide square or round in cross-section with lengthwise axis ZZ' and two branches connected with said main waveguide via two gap in parallel connection. Note here that both connection gaps are made in two perpendicular walls of said mane waveguide. Note also that both OMT branches are connected with two unbalanced tapper. Note that said tapper features two different division factors (α, β) optimised to compensate for electric field orthogonal parasitic components (δy, δx) caused by OMT asymmetric. |
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Broadband turnstile slit antenna Invention relates to radio engineering and specifically to broadband antenna systems with horizontal polarisation of the radiation field, having a circular beam pattern in the horizontal plane. The broadband turnstile slit antenna comprises a set of N pairs of conducting plates which, upon connecting N slits, form a set of M upright posts, upper and lower supporting arms which together form an antenna support, as well as a power splitter and feeders. |
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Broadband microstrip antenna system with low sensitivity to multibeam reception Invention relates to broadband microstrip antenna systems with low sensitivity to multibeam reception. The broadband microstrip antenna system has an earthing plane comprising: a first surface having a first cross dimension; and a cavity filled with air, wherein the cavity has a second surface having a second cross dimension; and a side wall surface having a first height; and a radiating element having a third cross dimension, wherein the radiating element is placed crosswise within the cavity, has a second a second height from the first surface, wherein the second height is greater than zero but not more than 0.05λ, where λ is the wavelength in free space for the broadband microstrip antenna system, and has a third height from the second surface, and is separated from the earthing plane by air; and a conductor connected to the radiating element and configured to feed electromagnetic signals into the radiating element. |
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Multifunctional electromagnetic wave absorber Electromagnetic wave absorber for anechoic chambers and shielded rooms, having a spike-shaped hollow low-combustible housing made of single-face laminate, in the inner cavity of which there is a radar-absorbent filler, characterised by that the housing has the shape of a rectangular prism, wherein the ratio of sides which form a right angle to the thickness of the prism is equal to 6(±1):3(±0.5):1. |
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Method of making bulk microwave energy absorbers Invention relates to the manufacturing of bulk microwave energy absorbers from high-temperature absorbent material, used in high-frequency channels of electronic equipment. The method of making bulk microwave energy absorbers involves making absorbers of the required configuration from ceramic workpieces by mechanical processing. To increase heat-conductivity of the absorbers and ensure stability of their radio characteristics, the obtained absorbers are saturated with a composition containing Elasil sealant 137-182, diluted with nefras in ratio of 1:1, at temperature of 25±10°C and pressure of 1.3-2.6 kPa for 30 minutes, and then at pressure of 300-400 kPa for 5-10 minutes, followed by drying at temperature of 25±10°C for 24 hours. |
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Device for electromagnetic energy transmission Invention relates to the field of electric engineering, in particular, to wireless transmission of electric energy. Atmospheric air can be the medium. At that the claimed device is an installation for wireless transmission of electric energy as far as transmitted induction density can be of alternating or intermittent nature, and it will induce electromagnetic force at the facility or at inductance coils placed directly at the facility or close to it. The device can be used for remote heating of object of magnetic material, for example steel. The device includes using laser sets of significant power and with their assistance formation of flux channel in dielectric gaseous medium, for example, such as air; at that process of photo ionisation is used. |
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Non-ribbed hydroacoustic station antenna dome Invention relates to shipbuilding and specifically to hydroacoustic station domes. The non-ribbed hydroacoustic station antenna dome consists of an outer layer, an inner layer and a middle layer in between, said layers being made of polymer composite materials, and is characterised by that the middle layer is reinforced with polyaramid fibres, and the outer and inner layers are reinforced with waterproof fibres, wherein the total thickness of the outer and inner layers is not more than 0.25 times the thickness of the middle layer. |
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High-frequency cylindrical, lateral radiation antenna with circular scanning Cylindrical scanning, lateral radiation antenna comprises: a cylindrical waveguide formed by two (top and bottom) parallel metal discs; a dielectric cylinder which is a filling of the cylindrical waveguide and is capable of operating as a matching transformer between the cylindrical waveguide and free space, and as a beam-forming element; a rectangular array of radiators directed normally to the plane of the array, placed asymmetrically in the cylindrical waveguide; the plane of the array lies parallel to the base of the cylindrical waveguide; two metal cylinders respectively placed over the top and under the bottom discs and capable of operating as auxiliary cylindrical radiators which adjust the beam pattern in the elevation plane. |
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Cardioid antenna for underwater radio reception Cardioid antenna consists of two mutually perpendicular frames, connected through a beam pattern rotating device to the first input of an adder, and the second input is connected through a matching device to an omnidirectional antenna, which is in form of two series-connected mutually perpendicular anti-phase coplanar frames that are horizontally spaced apart. Signals from the output of the adder are transmitted to the input of a radio receiving device. All antenna conductors in contact with sea water are insulated. |
Another patent 2513294.