|
|
Ceramic quasiplanar waveguide filter Ceramic filter consists of two partially metal-coated units in the form of a rectangular parallelepiped made of high-Q thermally stable ceramic connected by faces with identical metal coating in form of an E-plane diaphragm, which forms in the connected filter units a chain of directly coupled resonators. Input and output communication elements are made on the end faces of the units. |
|
|
Invention relates to microwave engineering and can be used in active phased antenna array systems, radio transmitting and other devices and microwave systems. The multichannel power divider comprises a splitter which consists of quarter-wave transmission lines, ballast decoupling resistors connected into a star, wherein a quarter-wave transmission line is connected between the input of the power divider and the input of the splitter. |
|
|
Invention relates to antenna engineering and can be used in broadband antenna system radiators operating on circularly polarised waves. The polariser comprises a first waveguide section having one element designed to convert a linearly polarised wave into a circularly polarised wave or vice versa, the longitudinal axis of symmetry of which is parallel to the longitudinal plane of symmetry of the first waveguide section, and a second waveguide section connected to the first waveguide section and having a common axis of symmetry with said first waveguide section. The second waveguide section has one dead-end cylindrical opening. A cylindrical long element, which passes inside the waveguide and is made of conducting material, is coaxially placed in the opening. The axis of the opening lies in the longitudinal plane of symmetry of the one element designed to convert a linearly polarised wave into a circularly polarised wave or vice versa. |
|
|
In a mechanical microwave switch comprising input and output slots, a central strip, grounding plates and dielectric plates installed between the central strip and grounding plates, the central strip is rigidly fixed to central conductors of input and output slots, grounding plates are rigidly connected to external conductors of input and output slots, and dielectric plates are made as movable and consist at least of two parts having different effective dielectric constants. Besides, dielectric plates installed between the central strip and the grounding plates may be made at least of three composite parts having different effective dielectric constants. |
|
|
TE01 wave exciter consists of an output circular waveguide with a wall which shorts the output circular waveguide formed by a pipe section with a contact flange and mated through a board 2 with a board 3 in which there is a dead-end opening 4. Auxiliary waveguides, which are mated with the lateral surface of the output circular waveguide, are formed by the plane of the board 2 and rectangular grooves 5 made in the board 3. A mode filter, mounted in the output circular waveguide, is a plane-parallel structure with communication openings 6 made in the board 2 and arranged concentric to the axis of the output circular waveguide. An inner conductor 7 can be inserted into the output circular waveguide, wherein the outer surface of the inner conductor 7 should have electrical contact with board 2 and board 3. |
|
|
Detector head comprises a body made in the form of two halves: a base 1 and a cover 2, between which there is a strip plate 3. A body of a coaxial slot 4 is electrically connected with the base 1. In the base 1 there is a through waveguide channel 5, and in the cover 2 - a shorting plug 6. On the strip plate 3 there is a filter 7, representing a low-pass filter (LPF) and a contact site 8. A resistor 9 is electrically connected to the body with the help of strip plate 3 conductors. The detector diode 10 is glued to conductors of the strip plate 3 with the help of a current-conducting glue. Along the contour of earth conductors on the strip plate 3 there are metallised transition holes 11. Along the perimeter of the base 1 there is a board 12. The detector head is assembled with the help of screws 13. The waveguide-strip transition is formed by a section of the circuit board 14 in the zone of the through waveguide channel 5 and the shorting plug 6. The detector diode 10 is connected with the body of the detector head by means of a loop 15. |
|
|
Surface and waveguide metamaterials Invention relates to surface metamaterials. A waveguide apparatus based on complementary elements made of metamaterial has a waveguide structure, having a conducting surface having multiple separate electromagnetic responses relating to corresponding openings, which are complementary elements made of metamaterial, made in the conducting surface, wherein said multiple separate electromagnetic responses provide effective magnetic permeability for electromagnetic waves propagating substantially in the waveguide structure in a direction parallel to the conducting surface. |
|
|
Frequency-domain decoupler for connecting multiple sources or loads operating at different frequencies, with a common load or source, is made using a microstrip technology on a printed-circuit board in form of a microstrip structure which includes two open rings, each having two tuning arms and two matched inputs, one of which is common for the two open rings. Each tuning arm ends with tuning elements. The frequency-domain decoupler is adapted to simultaneously use, as a frequency adder, two signal sources operating in different frequency ranges, and a common source, as well as a frequency divider for dividing the signal of the common signal source into two signals with different frequency ranges. |
|
|
Radio station for independent operation of 10 telephone and 10 telegraph channels Radio station further includes an antenna switch, a transmission channel converter, a receiving channel converter, an amplifier, a unit of ten analogue-to-digital converters, a unit of ten digital-to-analogue converters, a unit of ten filters, a data transmission channel converter, a switch, a unit of data transmission equipment and ten self-contained radio operator stations. |
|
|
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. |
|
|
Apparatus for simultaneous transmission of signals in optical and radio-frequency ranges Apparatus has a dielectric waveguide in form of a hollow cylinder with openings in the wall for inlet of fibre-optic links lying at a distance δ from each other. Leads of the fibre-optic links are placed in a cylinder bushing made of waveguide material. The bushing is tightly fit into the cavity of the waveguide and protrudes from the waveguide by a distance h. An optical lens is placed coaxially opposite the bushing. The distances δ and h are selected to be comparable with the given wavelength λ of radio-frequency radiation. To ensure coaxiality of the fibre-optic link and the optical axis of the lens, the waveguide is placed such that coaxiality can be adjusted. To protect information radio-wave radiation from spurious reflection, the waveguide is placed in a pipe made of porous dielectric material with low permittivity. |
|
|
Narrow-band SHF-filter comprises a dielectric substrate, at one side of which there is a grounding screen, and at the other side - a microstrip structure, which realises filter elements with link chains. At the same time the microstrip structure includes six resonators, two capacitors for connection of a signal source and a load, five capacitors to provide an electric connection between neighbouring resonators, and also a transformer on joined transmission lines, which is connected by two arms between the non-neighbouring first and fourth resonators, and two its other arms are closed to the grounding screen, and a trimmer capacitor coupled between the non-neighbouring fourth and sixth resonators. At that coupling between of the neighbouring first, second, third, fourth, fifth and sixth resonators is of capacitance type, coupling between the non-neighbouring first and third resonators is of inductance type, and coupling between the non-neighbouring fourth and sixth resonators is of capacitance type. |
|
|
Invention relates to flexible wall for microwave-filters with cavity resonator equipped with mechanical device of temperature compensation to be used in telecommunication. Proposed system comprises at least two separate elastic membranes arranged one above the other. Every said membrane has central area (C), mid area (I) and peripheral area (P), end to end. Note here that elastic membranes are thermally and mechanically bolded at central area (C) and peripheral area (P) and are not connected at mid area (I). |
|
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. |
|
|
SHF protective device contains the central conductor, the first and second section of the transmission line, the first and second semiconductor devices, the first, second and third resistors and two inductance coils. Both sections of the transmission line are made as sections of the single transmission line, each having a length equal to one eighth of the wave length in the transmission line section within the central frequency of the service band and a wave impedance equal to the wave impedance of the central conductor, Schottky-barrier field-effect transistors are used as semiconductor devices, the first and third transistors are similar and have an impedance to the order higher than the wave impedance of the central conductor. |
|
Broadband attenuator for high-speed analogue and analogue-digital interfaces Broadband attenuator for high-speed analogue and analogue-digital interfaces comprises a first resistor (3), an input voltage source (4) connected via alternating current between a common bus (5) and the input of the device (1), a second resistor (6) connected via alternating current between the output of the device (2) and the common bus (5), equivalent capacitance of a load (7), connected via alternating current between the output of the device (2) and the common bus (5), a non-inverting voltage follower (8), a non-inverting current follower (10), and the two-terminal element of a correction circuit (11) is connected between the output of the non-inverting voltage follower (8) and the input of the non-inverting current follower (10). |
|
Coaxial-waveguide transition contains a section 1 of a regular waveguide short-circuited by a butt end wall 2 and a section 3 of a coaxial line located perpendicular to the wall. A matching element 4 is made of several bundled rectangular parallelepipeds. In the matching element 4 wall there is a coupling hole in which a coupling element 5 is installed, it couples the matching element 4 with the central conductor of the coaxial line section 3. In the coupling hole there is a dielectric bushing 6 which ensures increase in electrical and mechanical strength of the coaxial-waveguide transition. In additional points of the formula specific manufacture of the coaxial-waveguide transition is described. |
|
Higher frequencies waveguide filter Filter represents a section of a rectangular waveguide with flanges and diaphragms of the preset height in-built into both narrow walls of the waveguide and one wide wall of the waveguide; in a cut nonradiating slot on the opposite wide side of the waveguide there is an in-built diaphragm with setting depth reconfigurable mechanically, which is intended for frequency change in the filter section. |
|
Controlled stepped attenuator, the input and output of which are formed by two parallel-connected sections of a transmission line, one of which is in form of three series-connected quarter-wave sections of a line, shunted at connection points by diodes which are connected via direct current in polarity at a quarter-wave distance to the input and output, the free electrodes of which are connected to quarter-wave sections of the line; the second section of the transmission line includes a signal attenuation unit, which is connected at the same distance from the input and output, wherein the second section of the transmission line is shunted by diodes, connected in one polarity, at a quarter-wave distance from the input and output through quarter-wave sections of a line, wherein the free electrodes of the diodes shunting the second section are earthed, wherein all diodes of the attenuator are connected via direct current in one polarity. |
|
Interference switch for resonance microwave compressor Switch comprises four waveguide H-junctions lying in pairs in orthogonal planes, with input and output straight arms and half-wave side arms, combined through a communication window into a full waveguide cross-section in the cylindrical wall of a transmission resonator. The transmission resonator accommodates a microwave switch with a gas-discharge tube, mounted at half the height of the transmission resonator on its diameter at an angle of 45° to the direction of the side arms, and with an illumination discharge device at the centre of one of the ends of the gas-discharge tube. The operating frequency of the transmission resonator is selected equal to the frequency at which the side arms of the H-junction have a half-wave electric length. The outer diameter d1 of the gas-discharge tube is approximately equal to λ/6, and its inner diameter d2 is approximately equal to λ/10. |
|
Controlled phase changer relates to high and ultrahigh frequencies and can be used to control signal phase in antenna arrays and information transmission systems. The controlled phase changer comprises a dielectric substrate, on one surface of which there is a continuous shielding conductor of a transmission line and on other - interacting metal strip conductors, each connected by one end through a varactor to the shielding conductor of the transmission line, and by the second end to an irregular microstrip transmission line, the ends of which form the input and output of the device. |
|
Strip-line filter with wide stop band Strip-line filter with wide stop band containing a dielectric plate suspended between screens with strip resonator conductors applied at the edge of one of its surfaces with short-circuited neighbouring ends is distinguished by the fact that inside the dielectric plate there are additional strip conductors short-circuited by one end at the opposite edge of the dielectric plate. |
|
Broadband SHF attenuator consists of at least one bit and each bit contains transfer lines at the input and output with identical wave-forming resistance, Schottky-barrier field-effect transistor, two resistors and at that the first resistor is connected in parallel and the second one in-series to the attenuator input and output; ends of the first resistor are connected to the source and the drain of Schottky-barrier field-effect transistor respectively, its source and the first resistor are earthed respectively, ends of the second resistor are connected to transfer lines at the input and output respectively. In each bit of the attenuator the following elements are introduced additionally: the second Schottky-barrier field-effect transistor, three inductance coils and two identical resistors - the third and fourth ones, at that the source of the second Schottky-barrier field-effect transistor is connected to transfer line at the input while its drain is connected to transfer line at the output, ends of the first and second inductance coils are connected to the ends of the first and second resistors respectively, one end of the third inductance coil is connected to transfer line at the input while the other one is connected to the source of the first Schottky-barrier field-effect transistor, gates of each Schottky-barrier field-effect transistor are connected to the source of direct-current control voltage through the third and fourth resistors respectively. |
|
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. |
|
Active phase changer (versions) Invention relates to electronic engineering and specifically to microwave phase changers on semiconductor devices. The active phase changer, made on SiGe semiconductor devices and including wide-band quadrature polyphase filter, consists of series-connected sections built on RC passive circuits, and facilitating generation of two orthogonally phase-shifted quadrature signals, an analogue differential adder having Gilbert cells, an amplifier and an adder, a digital signal unit configured to control each Gilbert cell, a matching link and a converter unit for converting the differential signal into a unipolar signal; also, at the output of the quadrature polyphase filter there are four emitter followers which facilitate matching with the circuit of the analogue differential adder. |
|
Invention relates to microwave equipment, particularly devices for summation (division) of microwave signals, and can be used to sum up (divide) microwave signals in feeder circuits of communication equipment, radar devices, television and measuring equipment. A microwave signal adder, having a symmetrical tee, having an output arm, two input quarter-wave arms situated on opposite sides of the output arm, includes parallel-connected switching diodes which are connected at a distance equal to a quarter of the wavelength from the branch point of the tee, and the output arm is in form of a quarter-wave section of a coupled line, for which switching electrodes are further connected in parallel at both ends of the secondary line. |
|
Small-sized phase shifter of microwave range Small-sized phase shifter of microwave range includes a microstrip line located on dielectric material and ferroelectric capacitors on a dielectric substrate, which are arranged between its current and earth conductors, and differs by the fact that dielectric material is represented with a diamond plate; the dielectric substrate is made from monocrystalline magnesium oxide with crystalline orientation (100), and as ferroelectric material there used is a film of barium-strontium titanate (Ba1-xSrxTiO3) with thickness of 20±5 nm, where x=0.2±0.01. |
|
Phase changer, having a dielectric substrate on which is deposited a ferroelectric film and a four-slot line, having outer waveguide electrodes and inner control electrodes, is formed, wherein on the part of the dielectric substrate on which the ferroelectric film deposited, there are contact areas for applying voltage, areas for continuation of the waveguide electrodes and coplanar lines which connect the control electrodes of the slot line with the contact areas, wherein the centre control electrode is connected through a quarter-wave section to a first contact area, which is electrically connected to areas for continuation of the waveguide electrodes, and each control electrode neighbouring the centre electrode is connected to a second contact area through a series connection of two quarter-wave sections, parameters of the first of which are equal to parameters of the quarter-wave section connected to the centre control electrode, and parameters of the second quarter-wave section are selected based on the condition of maximum reflection of the operating signal. |
|
Method of filtering background infrared radiation Method of filtering background infrared radiation incident on a superconductor single-photon detector involves transmitting infrared radiation with wavelength of 0.4-1.8 mcm to the superconductor single-photon detector using a single-mode fibre which is partially at temperature of 4.0-4.4 K, wherein the length of the cooled section of the single-mode fibre is 0.2-3.5 m. |
|
Contact microwave switch comprises inlet and outlet slots, a central strip rigidly connected to central conductors of inlet and outlet slots, grounding plates, electrically connected with external conductors of inlet and outlet slots, and dielectric plates installed between the central strip and grounding plates, grounding plates jointly with dielectric plates may move. At the same time between the grounding plates and the external conductors of inlet and outlet slots there is a dielectric gasket, and dielectric plates installed between the central strip and grounding plates are made at least from two composite parts, having different dielectric constants. |
|
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. |
|
|
Protective microwave device has a centre conductor, one end of which is meant for input of a microwave signal and the other for output, a transmission line section connected to said centre conductor, a semiconductor device in form of a Schottky-barrier field-effect transistor connected to the other end of the transmission line section, a resistor connected in parallel to the semiconductor device, a capacitor and an inductor; the transmission line section is in form of a section of a single transmission line whose length is equal to one eighth of the wavelength in the transmission line section at the centre frequency of the operating frequency band, and whose wave impedance is equal to twice the wave impedance of the centre conductor, wherein values of the capacitor C and inductor L and resistance of the resistor are selected in accordance with given relationships. |
|
Broadband microstrip bandpass filter Microstrip filter has a dielectric substrate on one side of which an earthed base is deposited and on the second side of which parallel straight strip conductors of resonators are deposited, said conductors being connected electromagnetically and inductively, and additional strip conductors whose lateral sides are connected to neighbouring resonators. Only conductors of external resonators are short-circuited by one end. The additional strip conductors are open-circuited. |
|
Microwave switch based on pin diodes with filter properties Device comprises: separating capacitors in series LC oscillatory decoupling circuits (C1, C4, C7); circuit capacitors in parallel LC oscillatory filter circuits (C2, C5, C8); circuit capacitors in parallel LC oscillatory decoupling circuits (C3, C6); blocking capacitors (C9, C10); inductors in series LC oscillatory decoupling circuits (L1, L4, L7); inductors in parallel LC oscillatory filter circuits (L2, L5, L8); inductors in parallel LC oscillatory decoupling circuits (L3, L6); limiting resistors (R1, R2, R3); PIN diodes (VD1, VD2, VD3, VD4); signal terminals of the device (11, 12, 13); control voltage sources (26, 27). |
|
Into a microwave signal adder containing a symmetric T-piece having an output arm, two input quarter-wave arms located on both sides of the output arm, there installed in parallel are switching diodes connected at the distance equal to one quarter of wave length of the T-piece branching node, and the output arm is made in the form of a quarter-wave piece of the connected line, on both ends of the secondary line of which there connected in parallel are additional switching diodes. |
|
Resonant microwave compressor, having an accumulative resonator bounded by short-circuiters, a microwave switch with a gas-discharge tube, an energy input device and an energy output device based on H connectors, connected symmetrically into short-circuited branches of the accumulative resonator; outputs of the branches of the H connectors of the output element are connected to an adder with an output waveguide, wherein the accumulative resonator is in form of two identical orthogonal short-circuited waveguide sections lying in the same plane which, in their central part, are merged into a single resonance system through a communication window in the cylindrical wall of the built-in resonator; the gas-discharge tube of the microwave switch is situated in the centre of the built-in resonator and is oriented at an angle of ±45° to the waveguide sections, and the input device is in form of a rectangular waveguide section and is connected to one of the end walls of the built-in resonator coaxially with them, and the narrow walls of the section are oriented parallel to the gas-discharge tube; the output device is in form of four H connectors lying at a distance of 0.251-0.5R=nλw/2 from the nearest short-circuiter of the waveguide sections, and outputs of the accumulative resonator to which the adder is connected are unidirectional side branches of H connectors, orthogonal to the plane in which waveguide sections of the accumulative resonator are situated. |
|
Articulated waveguide connection Articulated waveguide connection consists of two straight sections of rectangular waveguides mounted in movable and fixed cylindrical housings, between the walls of which a spherical bearing is placed such that its centre coincides with the point of intersection of the axes of the movable and fixed waveguides. Flat flanges with choke grooves are mounted at the ends of the waveguide sections. The inner surface of the cylindrical housing is coated with a layer of radar absorbent material. |
|
Band-rejection filter consists of high-Q ceramic resonators and contains the main current-carrying conductor located at one side of dielectric substrate while at its other side there are sections of strip conductors having connection through the face with the main current-carrying conductor and galvanic coupling with ceramic resonators. At that location of spurious rejection band depends on thickness of dielectric substrate. |
|
Invention refers to a multistrip connection device of emission and reception with very wide frequency bandpass of orthomode connection device (OCD) type, which is intended for ultra-high frequency telecommunication antenna. Connection device includes port (P1) of propagation of the whole complex of frequencies, a housing and port (P2) of propagation of frequency bands of high frequency. With that, those three parts are coaxial, and communication slots (24A) intended for propagation of low frequency bands are made in the above housing, and each of those slots is connected to the waveguide, and the same device differs by the fact that its housing (24) combining two of the above ports represents the shape of a rotation body, the profile of which varies in compliance with a polynomial law and constantly reduces from port (P1) having maximum cross-section to port (P2) having minimum cross-section. |
|
Ultra-high frequency (UHF) module includes a housing separated at least with one screen partition wall into sections, inside which there located on bases are boards with microstrip lines, as well as an inter-board UHF junction installed in the screen partition wall and attaching the microstrip lines of boards located in adjacent sections on outer side of the housing, in the section of connection of the housing bottom to the screen partition wall, perpendicular to plane of microstrip boards, there is a slot, in which there installed is an UHF junction; with that, geometrical dimensions of the slot are chosen with possibility of providing the required positioning of internal conductor of UHF junction relative to connected microstrip lines of boards during installation of UHF junction in the slot of screen partition wall; with that, a gap between external conductor of UHF junction and inner surface of the slot is filled with solder, and on the outer side of the housing, the external conductor of UHF junction is connected by soldering to screen sides of microstrip boards. |
|
Method for generation and frequency modulation of a high-frequency signal is characterised by that the forward path is made from a three-terminal nonlinear element, and the feedback circuit used is external feedback in form of an arbitrary four-terminal element connected to the three-terminal nonlinear element; the control and common electrodes of the three-terminal nonlinear element are connected to a second two-terminal element with complex resistance. |
|
Miniature broadband quadrature directional coupler on lumped elements Miniature broadband quadrature directional coupler on lumped elements consists of two pairs of inductively coupled coils that are connected in series and capacitors, wherein the inductively coupled coils are in form of flat rectangular spiral conductors lying in pairs under each other in layers of a multilayer ceramic board at a certain distance from each other to provide the required inductive coupling coefficient, and there are additional capacitors connected between leads of the pairs of coils and between leads of pairs of coils and the earth. |
|
Out-of-limit waveguide load consists of a section of a rectangular waveguide with length of at least 2/5 of the wavelength at the highest frequency of the operating frequency band and a short-circuiting wall and is used in dielectric-filled waveguide channels. The out-of-limit waveguide load is used to reflect TE modes while maintaining phase and amplitude owing to the effect of coherent reflection of waves inside the section of the out-of-limit rectangular waveguide. |
|
Method and apparatus for electrical control of phase of waveguide phase changer Transverse electric type electromagnetic wave (TE mode) is transmitted through a section of a rectangular waveguide with varactor diodes; control voltage is applied across the varactor electrodes, said voltage changing the effective waveguide width, thereby controlling the length of the TE mode in the waveguide, such that for a fixed geometrical length of the waveguide section, there is fast control of phase with low insertion losses on passage of the wave. Disclosed is a device having a source of control voltage and a section of a rectangular waveguide, which consists of four conducting (metal) walls which transmit the TE mode in the longitudinal direction, characterised by connection, at least along one of the narrow waveguide walls, of a longitudinal varactor diode insert with capacitance which depends on the applied control voltage, the insert adjoining the wide waveguide walls on microwave current induced by the transmitted TE mode. |
|
Power divider can be used as a broadband power divider in measuring devices. The housing has the shape of a triangle with rounded corners, in the central part of which a through-chamber is formed. In three lateral surfaces thereof, having cylindrical through-holes, there are three flange coaxial connectors. The through-chamber accommodates a dielectric plate, on one side of which there are flat rectangular resistors and strip conductors which connect the resistors with the centre conductors of the flange coaxial connectors in the through-chamber, and on the other side of the dielectric substrate there is a resistive layer in form of a circle. In the end part of each centre conductor of the flange coaxial connector entering the through-chamber, there are two plane-parallel surfaces in form of steps. In the top and bottom bases of the through-chamber there are circular stepped elements of the bottom and top covers of the housing, in the bottom cover of which there is a blind hole. |
|
Miscrostrip diplexer contains dielectric substrate; one side of the substrate is metalised and functions as earthed base, on the other side there are strip conductors forming bimodal cavities and three capacitors connecting three ports with the outermost dual-mode resonators. One of strip conductors is T-shaped and frequencies of its first two oscillation modes are aligned to the central frequencies of pass bands in low-and high-frequency channels. Remaining strip conductors are split partially by longitudinal slot at the one end and belong to one of two groups that form pass bands in low-and high-frequency channels where splitted strip conductors interconnected electromagnetically and connected with T-shaped strip conductor. |
|
Apparatus, method and system of transmitting millimetre waves Apparatus includes: a signal generating unit which generates a millimetre wave signal via signal processing for the input signal; a coupling circuit which transmits an electromagnetic wave from the millimetre wave signal generated by the signal generating unit to one end of a printed-circuit board; a coupling circuit which receives the electromagnetic wave from the millimetre wave signal from the other end of the printed-circuit board; and a signal generating module which generates an output signal by processing signals consisting of the millimetre wave signal from the electromagnetic wave received by the coupling circuit. The printed-circuit board consists of dielectric material, the dielectric loss tangent of which is relatively high, and a transmission line which performs the function of a millimetre wave transmission channel is made on said printed-circuit board. |
|
Method of shf filter fabrication Method is implemented at dielectric substrate having at least one side of excitation elements is metalised by photolithographic technique. Then at least one cavity is made in the dielectric substrate in order to place there a dielectric resonator. A dielectric resonator is fixed in each cavity and the dielectric substrate is placed into a case that fulfils the screen function. |
|
Method of generating high-frequency signals and apparatus for realising said method Method involves interaction of high-frequency signals with a three-terminal nonlinear element, an arbitrary four-terminal element, an external feedback circuit, a load in form of a first two-terminal element with complex impedance and a reactive four-terminal element, the input of which is connected in a transverse circuit to a second two-terminal element with complex impedance which imitates resistance of a generator signal source in amplification mode, excitation conditions in form of amplitude balance and phase balance. Apparatus has a dc voltage source (2), a three-terminal nonlinear element (1), a reactive four-terminal element, a load in form of a first two-terminal element, a second two-terminal element with complex impedance which imitates resistance of the input high-frequency signal source of the generator in amplification mode and an arbitrary four-terminal element. The reactive four-terminal element is in form of stage-connected two reverse L-shaped connections of four reactive two-terminal elements, where the two-terminal elements of each L-shaped connection contain an oscillatory circuit. |
|
Method of matching complex impedances and apparatus for realising said method Four-terminal element is complex and consists of reactive and resistive elements; a two-terminal nonlinear element is connected between a high-frequency signal source and the input of the four-terminal element, connected to a low-frequency control signal source; the output of the complex four-terminal element is connected to a load; conditions for ensuring a minimum reflected signal are met successively at the given number of frequencies while simultaneously varying amplitude of the control signal. |
Another patent 2513811.