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Integrated antenna device consists of a double-turn or multiple-turn helical cone-shaped radiator with apex angle of the cone α and a reflector-shield with diameter B, the device including another one or more cone-shaped radiators with apex angle β<α, for which the diameter of the upper base of the lower radiator is equal to the diameter of the lower base of the upper radiator and is superimposed with it, and a reradiator in form of a metal ring with diameter A<B and lying at a distance h=λ/4 parallel to the reflector-shield on the side of the cone-shaped radiators without galvanic coupling with the main reflector-shield, where λ is the wavelength of the operating range. |
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Aircraft antenna comprises a cylindrical resonator open at one end, which is partially filled with a dielectric, a matching element, a coaxial connector, a tuning element, a radiator and a top cover. The centre conductor of the coaxial connector is extended into the inside of the cylindrical resonator and is connected to the radiator. The matching element is in form of two stub lines. The first stub line is placed parallel to the centre conductor of the coaxial connector. The second stub line is connected by one end to the side wall of the cylindrical resonator and by the other end to a portion of the radiator located between the points of connection with the centre conductor and the first stub line. The radiator is in form of a ring and is rigidly mounted on the dielectric. The radiator is mounted such that the axes of symmetry of the radiator and the cylindrical resonator and the straight line passing through the middle of said portion of the radiator parallel to the axis of symmetry of the radiator lie in one plane of the longitudinal section of the antenna. The tuning element is mounted in the bottom cover of the cylindrical resonator under the radiator while allowing axial displacement thereof. |
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Radar antenna with reduced scattering cross-section Radar antenna, having at least one radiator operating in a given frequency band, placed in front of radiators in one plane of the a frequency selection device with band characteristics which enable to transmit electromagnetic radiation in the operating frequency band, and reflect radiation outside said band, between the radiators at a distance therefrom in one plane, there are linear arrays of identical dipoles which form a flat two-dimensional periodic mesh structure. |
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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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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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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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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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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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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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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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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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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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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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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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Antenna device, which consists of an antenna and a drive over the housing of the superstructure and a drive control unit, having an output which is connected to the input of the drive, rigidly connected to the antenna, characterised by that the device includes a radiotransparent deep-water protective casing with an antenna and a drive, rigidly connected inside with the housing of the superstructure, having a rigid connection with the drive, the input of which is connected to the output of the drive control unit through a hole in the housing of the superstructure. |
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Composite glonass/ gps+gsm-900/1800 system Composite GLONASS/GPS+GSM - 900/1800 system, having a GLONASS/GPS system antenna with an amplifier, a passive antenna designed to receive and transmit data in GSM networks and two feeders, characterised by that it further includes a metal base covered by a radiotransparent cap; wherein said passive antenna is vertically mounted on the base, said passive antenna being a dielectric plate, on the top edge of one the surfaces of which are deposited two current-conducting rectangles which are oriented with their long sides parallel to the metal base, on the lower edge of the two current-conducting rectangles, oriented with their short sides parallel to the metal base, between the two rectangles, situated on the lower edge, there is a third current-conducting rectangle with a rounded vertex. An inverted L shaped element is attached to the vertex, wherein the GLONASS/GPS system antenna with the amplifier is mounted on the metal base in a plane perpendicular to the dielectric plate and symmetrical to its end part. |
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Hybrid slit antenna has a dielectric substrate, a metal shield having a slot line which divides the metal shield into two identical parts and a supply line, the slot line being a straight portion with length l, which further expands according to the exponential law y=±0.1e8.42x; in one of the parts of the metal shield, parallel to the axis of the slot line, there is a rectangular groove which, together with the straight portion of the slot line and the metal shield, forms a three-conductor strip line, a ferrite ring mounted at the end of the rectangular groove, while touching the outer circle of the outline of the slot line and the end of the rectangular groove, wherein the length l of the straight portion of the slot line is selected not shorter than the diameter D of the ferrite ring, i.e., l>D, and the ends of the expanding slot line are connected to cone-shaped symmetric electric vibrators with a vertex angle α=20°, placed on a dielectric substrate with ε=10 with arm span L = 0,4 2 ε + 1 λ , where λ is the maximum wavelength of the operating range. |
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Ultra-wideband small-size antenna and communication device having said antenna Ultra-wideband small-size antenna has: an earthing element placed in the immediate vicinity of the surface of the human body; a radiating element whose external dimensions are close to those of the earthing element lies away from the earthing element in a direction approximately perpendicular to the surface of the body at distance of 0.2-0.5 times the average wavelength of the working frequency range; a short-circuiting element mounted in at least two copies and configured to connect the earthing element to the radiating element at such points that its position is approximately perpendicular to the surface of the body; a conducting power element connected to the earthing element and the radiating element at arbitrary points, arranged in a position which is close to being perpendicular to the surface of the body, and has a gap in an arbitrary region with size of not more than 0.125 times the smallest wavelength of the working range, wherein said earthing element and radiating element are oriented in parallel to the surface of the human body, and the earthing element and/or radiating element has at least three slit cuts with an arbitrary shape. The communication device is designed to use such an antenna. |
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Manufacturing method of rfid antennae operating in ultrahigh frequency range Masking coating, and namely perfluoropolyether is applied onto a substrate. Then, a copper layer or an aluminium layer with surface resistance of about 90-110 Ohm/m2 is applied by means of a selective vacuum metallisation method; after that, a current-carrying layer of silver-containing paint with silver content in the amount of 70-90% is applied by means of a screen printing method. Surface resistance of the obtained current-carrying coating is measured by means of a four-probe control method. Sections of the substrate are rejected, which do not correspond to the required technical characteristics determined from the condition of allowable spread of surface resistance of not more than 15% in absolute units. |
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In the method, a V-shaped unidirectional dipole antenna has a pair of hollow cones facing each other with their vertices, and a feed line connected to the vertices of the cones. The axes of symmetry of dipole arms of the hollow cones lie in the same plane. A flat metal reflector is placed perpendicular to the axis in which the axes of symmetry of dipole arms of the hollow cones lie. The vertices of the hollow cones are raised over the flat reflector to form a constant phase centre, and the short dipole arms are connected to the edge of the flat reflector by bus lines in form of metal dowels. |
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Multi-resonant unidirectional dipole antenna In the method a V-shaped multi-resonant unidirectional dipole antenna has a pair of hollow cones whose vertices face each other and a feed line; the cones are formed by 2N metal strips, which are dipole arms and are arranged in pairs opposite each other on the lateral surfaces of the cones; a metal reflector; the inner volume of said cones is divided by circular plates parallel to the base of the cone into a row of cavities filled with a dielectric with a given relative permittivity and which form a series chain of semiconductor hollow resonators whose resonance frequencies form a log-periodic sequence or a sequence which is close to log-periodic. |
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Invention relates to aircraft and space engineering, particularly, to nose compartments of aircraft. Proposed compartment comprises front wedge-shape panel with flat portholes, axially symmetric variable-section lateral shell ring with connection frame and telescopic aerodynamic needle. Portholes feature various range of light transmission. Lateral shell ring is shaped to biconical, ogival or parabolic element composed of spline, or to combination thereof. Lateral shell ring incorporates prismatic, cylindrical, light and radio translucent insert. Front panel and part of lateral shell ring can turn and are separated from fixed part by tight membrane while bearing is fitted in the plane of their separation. Lateral shell tin inner side and front panel are equipped with heat insulation while porthole inner side is furnished with heat insulation straps. |
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Resonance slotted waveguide antenna Waveguide line, on one wall of which there are radiating elements and at the end of which there is a tuning element, includes phase-shifting devices mounted between radiating elements and between a radiating element and the tuning element, and communication elements connected to the waveguide, wherein the phase-shifting devices change the phase of the transmitted microwave signal in a wide range depending on its power level. |
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Apparatus for folding combat vehicle antenna Apparatus for folding a combat vehicle antenna has an antenna with a shock-absorber, a cap and a tail mounted on a rigidly fastened ring. The shock-absorber is in form of a conical spring, one end of which is attached to the tail and the other to the cap; the tail is bolted to the ring rigidly attached to a rotating platform which is provided with a journal with an opening accommodating the cylindrical protrusion of a supporting arm, bolted to the chassis of the combat vehicle; the other end of the journal is fitted into the opening of a connecting pipe fastened to the chassis of the combat vehicle, and there is a latch spring on the rotating platform. |
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Cylindrical lens is a coaxial set consisting of M dielectric flat N-leafed elements of the same maximum radius r0, made of the same dielectric material, turned about each other by an angle Each leaf of the i-th dielectric flat N-leafed element, having an almond shape, is radially oriented relative the central axis of that element. |
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Circular polarisation slit stripline leaky-wave antenna Circular polarisation slit stripline leaky-wave antenna includes a dielectric substrate, on the lower metal-coated side of which there is a spiral-shaped microstrip feed line, and on the top metal-coated side of which there are main slit radiators twisted on a spiral around the geometric centre of the antenna and having straight and curved segments of different length; on the top metal-coated side of the dielectric substrate between the main slit radiators there are additional slits with a shorter electrical length than that of the main slit radiators; the additional slits are not connected to the main slit radiators and are in form of concentric arcs arranged around the geometric centre of the antenna or in form of spiral sections. |
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Broadband multilayer antenna radome Broadband multilayer antenna radome comprises multiple thin layers arranged in parallel to each other, which include a bearing layer, characterised by that the input outer layer facing the side of incident radiation has permittivity of 1.8-2.2 and thickness of 2-4 mm, and the output outer layer is electroconductive and has surface electrical resistance of 300-700 ohms. |
Another patent 2513411.