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93 results about "Radial waveguide" patented technology
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Reader for conducting assays
InactiveUS20050106746A1Reduces calibration demandScattering properties measurementsAnalysis by subjecting material to chemical reactionRadial waveguideAnalyte
An analytical device that can be used to conveniently and accurately assay plural vessels. In one exemplary embodiment, a pair of LED sources provides illumination through a pair of radial waveguides to plural vessels arranged in a pair of substantially concentric and circular rows about the LED sources. A light pipe receives light transmitted through a vessel from each radial waveguide and reflects the received light downward to a single printed circuit board that contains a photodiode for each light pipe, as well as processing circuitry. The first LED source / radial waveguide optical is used to confirm the presence of a vessel, and the second is used to perform, e.g., turbidometric and / or colorimetric assays upon an analyte within the vessel. The vessel is incubated in a vessel support that includes a heat conducting base and a heat insulating cover. Heat is supplied by a DC heater.
Owner:ASSOCS OF CAPE COD
Radial linear power divider/synthesizer
ActiveCN102832432AImprove working bandwidthAdd impedance transformation structurePower amplifiersCoupling devicesCoaxial probeRadial waveguide
The invention discloses a radial linear power divider / synthesizer which comprises a coaxial probe, a radial waveguide cavity and a plurality of paths of stepped waveguides, wherein the coaxial probe is inserted into the central position of the radial waveguide cavity; the radial waveguide cavity is connected with the plurality of paths of stepped waveguides; each path of stepped waveguide is composed of at least one transitional rectangular waveguide and a standard rectangular waveguide; the standard rectangular waveguide is connected with the radial waveguide cavity through the transitional rectangular waveguide; and the transitional rectangular waveguide is wider than the standard rectangular waveguide. Two such radial linear power divider / synthesizers can be assembled in a back-to-back way to form a power amplifier. The radial linear power divider / synthesizer disclosed by the invention is broadened in the work bandwidth in a manner that at least one transitional rectangular waveguide is added.
Owner:BEIJING RES INST OF TELEMETRY +1
Apparatus and Assembling Method of a Dual Polarized Agile Cylindrical Antenna Array with Reconfigurable Radial Waveguides
ActiveUS20150380815A1Individually energised antenna arraysLinear waveguide fed arraysRadial waveguideRadio frequency
Embodiments are provided for an agile antenna that beamsteers radio frequency (RF) signals by selectively activating / de-activating tunable elements on radial-waveguides using direct current (DC) switches. The agile antenna device comprises a first radial waveguide structure encased in a first frame, a first line feed connected to the first waveguide structure, a second encased radial waveguide structure similar and coupled to the first waveguide structure. The two waveguide structures include the tunable elements controlled by the DC switches. A second line feed is connected to the second waveguide structure. The two line feeds provide the RF signal to the antenna. The antenna device also includes a plurality of radiating elements positioned between the first radial waveguide structure and the second radial waveguide structure, and distributed radially around a circumference of the first radial waveguide structure and a circumference of the second radial waveguide structure.
Owner:HUAWEI TECH CO LTD
Reader for conducting assays
InactiveUS6900059B1Reduces calibration demandScattering properties measurementsAnalysis by subjecting material to chemical reactionRadial waveguideAnalyte
Owner:ASSOCS OF CAPE COD
Efficient waveguide arrays with nearly perfect element patterns
InactiveUS6873766B2Improve efficiencyEfficient couplingCoupling light guidesRadial waveguideOptical interconnect
An optical interconnection apparatus including waveguide arrays such as waveguide lenses, waveguide gratings and star couplers, has improved efficiency realized by using a periodic array including in each period a combination of two radial waveguides. The array is formed with angular period α between an input circle and an output circle and it includes an input section, connected to the input circle, and an output section connected to the output circle. The input section includes a single waveguide in each period and it is efficiently coupled with minimal loss to the output section, whose waveguides are approximately arranged with period α / 2 in the final region close to the output circle.
Owner:CALLAHAN CELLULAR L L C
Slotted waveguide antenna for near-field focalization of electromagnetic radiation
ActiveUS20140354498A1Overcomes drawbackSlot antennasRadial guide fed arraysSlotted waveguideRadial waveguide
A radial slot antenna (1; 60) comprising a radial waveguide, which includes an upper plate (5), having a centroid (O) and an edge region (14) and provided with a plurality of radiating apertures (4), formed as slots in the upper plate (5), which develop according to an ideal annular pattern (16) around the centroid (O). The radiating apertures (4) are arranged in such a way as to form at least one first radiating region (31a) and one second radiating region (31b), which are distinct and radially separated by a dwell region (33a) without radiating apertures and wherein, in the first and second radiating regions (31a, 31b), radially adjacent radiating apertures (4) are separated from one another by a respective mutual radial distance, the dwell region (33a) having a radial width (δ) greater than the mutual radial distances of the radiating apertures (4) in the first and second radiating regions (31a, 31b). The slot antenna further comprises a signal feeder (10) operable for supplying am electromagnetic field (Ψ0, Ψ1) so as to assume, in the first and second radiating regions, opposite phases, in such a way that the electromagnetic field emitted by the slot antenna can be expressed via Bessel functions.
Owner:SELEX ES
Radial constrained lens
ActiveUS20050259019A1Antenna supports/mountingsAntenna adaptation in movable bodiesRadial waveguideDirectional antenna
The invention provides apparatuses for a radial constrained lens in a steerable directional antenna system. The radial constrained lens includes a feed array that excites a continuous radiating aperture through a section of radial waveguide. Feed elements of the feed array are coupled to a feed network that processes a signal for each of the active feed elements. A feed array may include a plurality of feed probes or a plurality of waveguide sections. A sector, which includes a contiguous subset of feed elements, may be configured by a switching arrangement either in a transmit mode or a receive mode. The radial constrained lens may be commutated about a full 360 degree aperture view. Also, a plurality of radial constrained lens may be vertically stacked so that a scanned beam may be adjusted both in an azimuth and elevation directions.
Owner:LEIDOS
Broadband RF radial waveguide feed with integrated glass transition
An antenna and method for using the same are disclosed. In one embodiment, an antenna comprises a radial waveguide; an aperture operable to radiate radio frequency (RF) signals in response to an RF feed wave fed by the radial waveguide; and a radio frequency (RF) choke operable to block RF energy from exiting through a gap between outer portions of the waveguide and the aperture.
Owner:KYMETA
Millimeter-wave broadband ridged probe radial waveguide power divider/combiner
The invention belonging to the field of the millimeter wave technology discloses a millimeter-wave broadband ridged probe radial waveguide power divider / combiner. The radial waveguide power divider / combiner comprises a coaxial input waveguide, a transition structure, a radial waveguide, and an N-path ridged probe coupled output array. According to the invention, with the broadband low-reflection transition structure for the coaxial waveguide to the radial waveguide, a matched circular ring structure, and the power distribution mode of the ridge probe, the working bandwidth of the power divider / combiner is increased; the radial waveguide power divider completes power distribution by one-time operation, so that the path losses of the power distribution is reduced; and because of the circumferential symmetry of the structure and the radial waveguide working mode, the amplitude-phase consistency of all paths of signals after distribution is guaranteed, so that the high power synthesis efficiency of the power combiner is realized.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
High-isolation radial power synthesis amplifier with broadband air micro-strips
ActiveCN102509840AImprove isolationReduce lossAmplifiers wit coupling networksCoupling devicesRadial waveguideMultiplexing
The invention provides a high-isolation radial power synthesis amplifier with broadband air micro-strips, which comprises a high-isolation radial power divider / synthesizer with broadband air micro-strips and at least one power amplifier module. The high-isolation radial power divider / synthesizer with the broadband air micro-strips comprises an input waveguide, a coaxial transition structure, a radial waveguide, the radial air micro-strips and at least one output waveguide, wherein the coaxial transition structure is arranged between the input waveguide and the radial waveguide, the center of the radial waveguide is connected with the input waveguide through the coaxial probe transition structure, the air micro-strips in radial distribution are connected to the periphery of the radial waveguide, a film resistor disc is pasted between each two adjacent air micro-strips, and each air micro-strip is connected with one output waveguide. The high-isolation radial power synthesis amplifier with the broadband air micro-strips can realize high-efficiency broadband power synthesis with one-division multiplexing and in single-mode operation.
Owner:广州桑瑞科技有限公司
Millimeter wave radial waveguide space power allocation/synthesizer
The invention discloses a millimeter wave radial waveguide space power allocation / synthesizer which comprises an upper cavity, a middle cavity and a lower cavity which are assembled sequentially from top to bottom. A standard waveguide cavity is formed in the upper cavity, one end of the standard waveguide cavity is located in the center of the upper cavity, and the other end of the standard waveguide cavity is located in the edge of the upper cavity. A plurality of radial waveguide cavities which are evenly distributed are formed in the lower cavity, and the center of the lower cavity is provided with a multistage ladder matching pin. The center of the middle cavity is provided with a circular hole. The free end of the multistage ladder matching pin penetrates through the circular hole and is located in the standard waveguide cavity in the center of the upper cavity. A gap is reserved between the multistage ladder matching pin and the circular hole. According to the millimeter wave radial waveguide space power allocation / synthesizer, the operation bandwidth of the radial waveguide power allocation / synthesizer is broadened through the multistage ladder matching pin, and the synthetic efficiency in multiplex synthesis is greatly improved compared with that of a traditional technology.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Apparatus for plasma processing
InactiveUS20020148564A1Uniform plasmaAvoid deformationElectric discharge tubesSemiconductor/solid-state device manufacturingRadial waveguideMicrowave
Owner:TOKYO ELECTRON LTD +3
Apparatus for plasma processing
InactiveUS6910440B2Introduction and propagation of a microwavePreventing unevenness in producingElectric discharge tubesSemiconductor/solid-state device manufacturingRadial waveguideMicrowave
A plasma processing apparatus that generates a uniform plasma, thus allowing uniform processing of large-diameter wafers. The cylindrical apparatus includes a wafer mounting table, a silica plate providing an airtight seal, a microwave supplier for propagating a microwave in TE11 mode, and a cylindrical waveguide connected at one end to the microwave supplier. A radial waveguide box is connected between the other end of the cylindrical waveguide and the silica plate. The radial waveguide box extends radially outward from the cylindrical waveguide, forming a flange and defining an interior waveguide space. A disc-shaped slot antenna is located at the lower end of the radial waveguide box, above the silica plate. A circularly-polarized wave converter disposed in the cylindrical waveguide rotates the TE11-mode microwave about the axis of the cylindrical waveguide, and sends the rotating microwave to the radial waveguide box.
Owner:TOKYO ELECTRON LTD +3
High-order-mode coaxial output cavity
InactiveCN104752125AIncreased power output levelsIncrease output powerTransit-tube coupling devicesRadial waveguideResonant cavity
The invention provides a high-order-mode coaxial output cavity which has a broad spectrum spurious-mode inhibition function and consists of a high-order-mode coaxial resonant cavity, a spurious-mode inhibition device and an output waveguide. The spurious-mode inhibition device comprises an attenuation cavity contained with a microwave absorption material, a radial waveguide enabling all modes including a working mode in the high-order-mode coaxial resonant cavity to be transmitted outwards and enabling the residual modes except the working mode, namely non-working modes to be transmitted to the attenuation cavity, and a choke flow waveguide producing equivalent short circuit to the working mode at the connecting position of the choke flow waveguide and the radial waveguide so as to limit the working mode in the high-order-mode coaxial resonant cavity and enabling the working mode not to be transmitted into the attenuation cavity. Therefore, the working mode is not influenced while clutter-spectrum levels can be reduced, and a speed regulating tube can stably operate in the working mode.
Owner:INST OF ELECTRONICS CHINESE ACAD OF SCI
Radial waveguide combining/distributing device
ActiveCN105762476AReduce difficultyLow machining accuracy requirementsCoupling devicesCoaxial probeRadial waveguide
The invention relates to a radial waveguide combining / distributing device which comprises a radial waveguide chamber body having a waveguide chamber, a coaxial probe which extends into the waveguide chamber body from a first surface of the same, and a radial waveguide connected with the radial waveguide chamber body, wherein the coaxial probe comprises an outer conductor and an internal conductor in the outer conductor, and the outer conductor and the outer conductor are arranged in a coaxial manner. The radial waveguide combining / distributing device is characterized in that a downward recessed structure is formed on the first surface of the radial waveguide chamber body, and the upper part of the downward recessed structure is larger than the lower part of the downward recessed structure. According to the radial waveguide combining / distributing device, the downward recessed structure of the radial waveguide chamber body is subjected to matching operation, and no extra structure change of the coaxial probe is made. Compared with coaxial probe processing, radial waveguide chamber body processing is advantaged by low processing difficulty, low requirements for processing precision and high practicality.
Owner:深圳市华讯方舟光电技术有限公司 +1
N-way, ridged waveguide, radial power combiner/divider
ActiveUS20170338539A1Low insertion lossMinimizes effect failedCoupling devicesRadial waveguideMicrowave
A microwave radial power divider / combiner device in which ridged waveguides structures are provided to provide adjacent-port isolation, large bandwidth, consistent cross-port phase matching, low insertion loss, and high peak and average power handling characteristics. The device includes a single rectangular input / output waveguide coupled to a bi-conical waveguide, which in turn is coupled to multiple ridged waveguides. These ridged radial waveguides are coupled to waveguide end-launches and impedance transformers located around the circumference of the device.
Owner:COBHAM ADVANCED ELECTRONICS SOLUTIONS
Broadband radial waveguide power divider/combiner in abnormal-cycloid transition structure
The invention discloses a broadband radial waveguide power divider / combiner in an abnormal-cycloid transition structure, and belongs to the field of a microwave / millimeter wave passive device. The broadband radial waveguide power divider / combiner comprises a standard rectangular waveguide, a rectangular waveguide-coaxial waveguide transition structure, a coaxial waveguide, the abnormal-cycloid transition structure, a radial waveguide provided with a multi-stage step impedance matching structure and N paths of standard output rectangular waveguides. The broadband radial waveguide power divider / combiner has the advantages of large power capacity, wide frequency band, compact structure, low insertion loss and reflection loss, good amplitude consistency and phase consistency of each output port and easy processing and assembling and the like.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Circular waveguide higher mode TM01 based radial waveguide power synthesis/distributor
The invention discloses a waveguide multi-path power synthesis / distributor applicable to a millimeter wave frequency high end. The radial waveguide power synthesis / distributor is based on a circular waveguide higher mode TM01 mode; the radial waveguide power synthesis / distributor comprises a rectangular waveguide input port, a mode converter, a circular waveguide, a matching structure and a plurality of (n is greater than or equal to 2) rectangular waveguide output ports; a TM01 mode is excited in the circular waveguide by a TE10 mode in the rectangular waveguide through the mode converter so as to realize space-time symmetry of the field distribution on the circular waveguide cross section; the mode conversion and energy distribution from the TM01 mode in the circular waveguide to the TE10 mode of the n rectangular waveguides can be realized through the multi-path power distributor; and the signals of each output port are uniform in amplitude and the same in phase. The radial waveguide power synthesis / distributor avoids the use of coaxial TEM modes; and the radial waveguide power synthesis / distributor has the advantages of larger circuit dimensions, lower processing requirement, high power capacity and low loss.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Radial waveguide power combiner and assembly method thereof
ActiveCN105098310ASolving the High Power Output ChallengeWorking frequency bandwidthCoupling devicesRadial waveguidePower combiner
The invention discloses a radial waveguide power combiner and an assembly method thereof, wherein the microwave of the waveguide input port is conducted into the radial waveguide through a probe of the radial waveguide power combiner, and the microwave is uniformly distributed to every channel according to the radial waveguide characteristics. The probe adopts a plug-in type fixing method, that is, a first locating pin is arranged on the upper end of the probe and is inserted into a first locating hole of an upper cover plate, and a second locating pin is arranged on the lower end of the probe and is inserted into a second locating hole of a lower cover plate. The above design has advantages of guaranteeing the stability of the overall structure, positioning accurately, reducing the assembling error, and making the index more accurate than before. Compared with the present power combiner, the radial waveguide power combiner is simpler and more stable in structure, easier to realize, wider in frequency band, lower in insertion loss, and more suitable for using in microwave millimeter-wave power combing application field.
Owner:36TH RES INST OF CETC
Digital coding holographic antenna and regulation and control method thereof
PendingCN111585028ARealize scanningGood and stable radiation performanceRadiating elements structural formsIndividually energised antenna arraysRadial waveguideSoftware engineering
The invention discloses a digital coding holographic antenna and a regulation and control method thereof. The device comprises a control circuit and a radial waveguide, and the radial waveguide comprises a top metal plate and a bottom metal plate. A dipole radiation unit is loaded on the upper surface of the top metal plate; metamaterial absorption boundaries are loaded on the periphery of the radial waveguide, the radial waveguide, the top metal plate and the bottom metal plate form a cavity, the bottom metal plate is provided with a coaxial feed structure, the dipole radiation unit is a dipole unit array, each dipole unit is loaded with a radio frequency switch, and the radio frequency switches are connected with a control circuit.
Owner:SOUTH CHINA UNIV OF TECH +1
Apparatus and method of dual polarized broadband agile cylindrical antenna array with reconfigurable radial waveguides
ActiveCN105874648AElongated active element feedPolarised antenna unit combinationsRadial waveguideRadio frequency
Embodiments are provided for an agile antenna that beamsteers radio frequency (RF) signals by selectively activating / de-activating tunable elements on radial-waveguides using direct current (DC) switches. The antenna comprises two parallel radial waveguide structures, each comprising a first radial plate, a second radial plate in parallel with the first radial plate, and conductive elements positioned vertically and distributed radially between the two plates. The radial waveguide structure further includes a plurality of quarter RF chokes which are connected to the conductive elements via respective micro-strips and tunable elements. The two parallel radial plates are separated by a height determined according to a desired transmission frequency range for RF signals, a length of the micro-strips, a diameter of the conductive elements, and a clearance space around each one of the conductive elements.
Owner:HUAWEI TECH CO LTD
Inward zero-order Hankel leaky-wave antenna for near-field focusing
ActiveCN106848581AImprove focus characteristicsEliminate electromagnetic wavesAntennas earthing switches associationLeaky-waveguide antennasRadial waveguideCoupling
The invention provides an inward zero-order Hankel leaky-wave antenna for near-field focusing. The inward zero-order Hankel leaky-wave antenna comprises a radial waveguide. A circular metal plate is arranged inside the radial waveguide and divides the radial waveguide into upper and lower dielectric layers. The antenna feeds by means of a feed coaxial connector. The inner core of the feed coaxial connector supports the metal plate. The top of the inner core does not exceed the lower surface of the metal plate. A gap is arranged between the edge of the circular metal plate and the inner wall of the radial waveguide and forms an annular slit along the circumference of the radial waveguide. The surface of the upper dielectric layer of the radial waveguide is provided with an impedance surface structure. The inward zero-order Hankel leaky-wave antenna, by utilizing annular slit coupling, obtains an inwardly-propagated zero-order Hankel wave from a zero-order Bessel standing wave, and achieves radiation by using a leaky-wave mode. The designed Hankel leaky-wave antenna is small in size, can achieve design of any radial wave number k[rho] < k0, and has adjustable frequency so as to be changed in characteristic by adjusting the frequency.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Broadband RF radial waveguide feed with integrated glass transition
ActiveUS10811784B2Radiating elements structural formsAntenna earthingsRadial waveguideSoftware engineering
Owner:KYMETA
Plasma processing apparatus
InactiveUS20050211382A1Introduction and propagation of a microwavePreventing unevenness in producingElectric discharge tubesSemiconductor/solid-state device manufacturingRadial waveguideSilicon dioxide
A plasma processing apparatus that generates a uniform plasma, thus allowing uniform processing of large-diameter wafers. The cylindrical apparatus includes a wafer mounting table, a silica plate providing an airtight seal, a microwave supplier for propagating a microwave in TE11-mode, and a cylindrical waveguide connected at one end to the microwave supplier. A radial waveguide box is connected between the other end of the cylindrical waveguide and the silica plate. The radial waveguide box extends radially outward from the cylindrical waveguide, forming a flange and defining an interior waveguide space. A disc-shaped slot antenna is located at the lower end of the radial waveguide box, above the silica plate. A circularly-polarized wave converter disposed in the cylindrical waveguide rotates the TE11-mode microwave about the axis of the cylindrical waveguide, and sends the rotating microwave to the radial waveguide box.
Owner:TOKYO ELECTRON LTD +3
Antenna aperture with clamping mechanism
ActiveUS20180323490A1Antenna supports/mountingsRadiating elements structural formsRadial waveguideEngineering
An antenna with a clamping mechanism and a method for using the same are disclosed. In one embodiment, an antenna comprises a radial waveguide, an aperture operable to radiate radio frequency (RF) signals in response to an RF feed wave fed by the radial waveguide, and one or more clamping devices to apply a compressive force between the waveguide and the aperture.
Owner:KYMETA
Ku-frequency-range four-path radial waveguide power combiner
ActiveCN105914442ALow insertion lossImprove Phase ConsistencyCoupling devicesRadial waveguidePower combiner
The invention discloses a Ku-frequency-range four-path radial waveguide power combiner which comprises a body, a base, a cover board and a probe. Four first waveguide ports are equidistantly arranged on the base in a circumferential direction. The top surface cover of the base is arranged on the base so that a first waveguide chamber is formed between the body and the base and the first waveguide ports can be communicated with the first waveguide chamber. The cover board covers the bottom surface of the body so that a second waveguide chamber is formed between the body and the cover board. The cover board is provided with a second waveguide port which is communicated with the second waveguide chamber. The bottom end of the probe is fixedly connected with the top surface of the base, and the bottom end successively penetrates through the first waveguide chamber and a central through hole on the body and extends into the second waveguide chamber. The probe is provided with a multi-step impedance conversion structure. The first waveguide ports and the second waveguide port are BJ140 standard waveguide ports. The Ku-frequency-range four-path radial waveguide power combiner has advantages of wide working frequency band, small insertion loss, high amplitude phase consistency, etc.
Owner:HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
Apparatus with rectangular waveguide to radial mode transition
InactiveUS20190089065A1Parallel-plate/lens fed arraysIndividually energised antenna arraysRadial waveguideRadio frequency
An apparatus with a rectangular waveguide to radial mode transition and method for using the same are described. In one embodiment, the apparatus comprises a radial waveguide having at least one plate; a radio-frequency (RF) launch coupled to the radial waveguide comprising a rectangular waveguide, a rectangular waveguide to coaxial transition coupled to the rectangular waveguide, and a coaxial to radial transition coupled to the rectangular waveguide to coaxial transition.
Owner:KYMETA
Apparatus and assembling method of a dual polarized agile cylindrical antenna array with reconfigurable radial waveguides
ActiveUS9490535B2Individually energised antenna arraysLinear waveguide fed arraysRadial waveguideRadio frequency
Embodiments are provided for an agile antenna that beamsteers radio frequency (RF) signals by selectively activating / de-activating tunable elements on radial-waveguides using direct current (DC) switches. The agile antenna device comprises a first radial waveguide structure encased in a first frame, a first line feed connected to the first waveguide structure, a second encased radial waveguide structure similar and coupled to the first waveguide structure. The two waveguide structures include the tunable elements controlled by the DC switches. A second line feed is connected to the second waveguide structure. The two line feeds provide the RF signal to the antenna. The antenna device also includes a plurality of radiating elements positioned between the first radial waveguide structure and the second radial waveguide structure, and distributed radially around a circumference of the first radial waveguide structure and a circumference of the second radial waveguide structure.
Owner:HUAWEI TECH CO LTD
Non-diffractive beam direction adjustable reconfigurable Bessel antenna
ActiveCN110112551AChange statusAchieve near-field beam direction offsetRadiating elements structural formsAntennas earthing switches associationRadial waveguideBeam direction
The invention relates to the field of microwave antennas, solves the problem in the prior art that the beseel beam direction cannot be effectively regulated in real time under the fixed microwave frequency, and discloses a non-diffractive beam direction adjustable reconfigurable bessel antenna which comprises a radial waveguide, a coaxial feeder and a reconfigurable impedance surface structure andalso comprises adjustable devices arranged in the reconfigurable impedance surface structure. The reconfigurable impedance surface structure is a periodic patch structure. The reconfigurable impedance surface structure is divided into four reconfiguration quadrants. The adjustable devices are arranged between patch slots on the non-axis in the reconfiguration quadrants. The state of the adjustable device switches of different quadrants of the reconfigurable impedance surface structure is changed by designing the reconfigurable impedance surface structure and setting different bias voltage ofthe reconfiguration quadrants so as to realize real-time deflection of the beam direction. The reconfigurable impedance surface structure is simple and suitable for non-diffractive beam transmission in different directions of the near field so that the antenna can be widely used in wireless energy transmission, near-field detection, medical imaging, secret communication and other fields.
Owner:SICHUAN UNIV
Reconfigurable radial-line slot antenna array
ActiveUS10454184B2Simultaneous aerial operationsParallel-plate/lens fed arraysRadial waveguideCapacitance
An antenna that includes a radial waveguide defining a waveguide region between opposed first and second surfaces. A radio frequency (RF) probe is disposed in the waveguide region for generating RF signals, and a plurality of radiating slot antenna elements are disposed on the first surface for emitting the RF signals from the waveguide region. A plurality of spaced apart conductive elements are disposed within the waveguide region. The antenna includes tunable elements that each include a quarter wavelength RF choke coupled through a variable capacitance and an inductive line to a respective one of the conductive elements. A plurality of DC control lines are provided, with each DC control line being connected to at least one of the tunable elements to adjust the variable capacitance thereof. A control circuit is coupled to the DC control lines and configured to selectively apply DC current values to adjust the variable capacitances of the tunable elements to control a propagation direction of the RF signals from the RF probe.
Owner:HUAWEI TECH CO LTD
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