63 results about "Dipole array" patented technology

The invention relates to the technical field of electronic information, in particular to a multi-band cooperative interference gallium nitride phased-array antenna control method and system. The method comprises the steps of extracting key parameters of electromagnetic signals, and generating a cooperative interference strategy combination; mapping the frequency band optimization weight to a dynamic working mode of the gallium nitride power amplifier unit, adjusting the radiation pattern characteristics of the reconfigurable dipole array according to the power distribution parameters, and constructing a composite beam forming framework; phase weighting and spatial multiplexing are carried out on the interference signals of all the frequency bands based on the composite beam forming architecture, and a multi-beam interference cluster is generated; thermodynamic state data of the gallium nitride power amplifier module in the multi-beam interference cluster generation process are collected in real time, and heat dissipation parameters of the liquid cooling system are regulated and controlled according to the thermodynamic state data. Intelligent collaboration and accurate pointing of multi-band interference signals are realized, the interference coverage range and the energy utilization rate are improved, and an efficient interference system integrating electromagnetic sensing, multi-beam collaboration and thermal management is formed.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

The invention discloses a broadband electromagnetic radiation interference characteristic modeling method for a shielding cable network. The method comprises the following steps: 1) obtaining a scattering parameter matrix of a shielding connector and a transmission parameter matrix of a bent shielding cable; 2) constructing an equivalent N port model of the shielding connector by using the scattering parameter matrix, and deducing a transmission parameter matrix of the shielding connector; 3) establishing a multi-conductor transmission line equation reflecting the distribution of interference current on the shielding cable by using the shielding cable transfer impedance; 4) cascading the transmission parameter matrixes of all the bent shielding cables and the shielding connectors to obtain an overall transmission parameter matrix of the shielding cable network; and 5) solving the multi-conductor transmission line equation in combination with the boundary constraint condition to obtain the common-mode interference current of the shielding layer of the shielding cable, and calculating the electric field radiation of the shielding cable network through the dipole array theory. The method is suitable for uniform and non-uniform shielding cables and shielding cable networks of single-core and multi-core wire harness shielding wire types, and has good universality.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

An antenna assembly includes a balanced antenna feed configured to receive a differential signal and a ground plane. The assembly further includes a first conductive dipole arm in planar alignment with a surface of the ground plane and a second conductive dipole arm in planar alignment with the surface of the ground plane and adjacent to the first conductive dipole arm. The assembly further includes a first feedline in electrical communication with the first conductive dipole arm and the balanced antenna feed and a second feedline in electrical communication with the second conductive dipole arm and the balanced antenna feed. The assembly further includes a conductive wall (“H-wall”) in electrical communication with the ground plane and having an end adjacent to, and physically separate from, the second conductive dipole arm. The H-wall has an axial length orthogonal to the ground plane.

The invention relates to the technical field of antennas, in particular to a millimeter wave three-beam all-dielectric lens antenna, which comprises a group of 2 * 2 magnetoelectric dipole array antennas and an all-dielectric circular lens structure, the 2 * 2 magnetoelectric dipole array antenna is used as a feed source and is arranged on the plane side of the all-dielectric circular lens structure, and the feed source directly faces the geometric center of the all-dielectric circular lens structure; the all-dielectric circular lens structure has a direction-controllable three-beam radiation capability; through the reasonable medium structure layout, the multi-beam coverage and the frequency point adaptability are considered while high-gain output is ensured, and the contradiction between the performance and the practicability of the existing scheme is overcome.

The invention relates to the technical field of array radiation pattern synthesis, in particular to a linear array radiation pattern synthesis method and system based on hybrid optimization. The method comprises the following steps: obtaining dipole array optimization parameter data; initializing an array parameter and an FGO population according to the acquired data; constructing a KAN proxy model and training the model by using an FGO population; performing hybrid iterative optimization on the KAN proxy model fused with the FGO; and performing array antenna pattern synthesis by using the optimized KAN proxy model. According to the probability hybrid evaluation strategy based on the KAN proxy model, through the whole FGO iteration process, low-potential candidate solutions are effectively screened out by dynamically allocating accurate electromagnetic simulation resources (such as high-proportion proxy evaluation in the initial stage and gradually-increased accurate verification in the later stage), and the calling frequency of a high-cost moment method is remarkably reduced.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

The present invention discloses a dual-polarization omnidirectional rectenna using a radio frequency power combining scheme. The antenna includes an orthogonally arranged horizontal polarization unit and a vertical polarization unit. The horizontal polarization unit includes a horizontal polarization group, which includes a tapered balun. The center point of the tapered balun is a feeding point. The tapered balun has a plurality of fan-shaped radiating branches evenly distributed circumferentially, and each of the radiating branches is connected to the tapered balun via a gradient microstrip line. The vertical polarization unit includes a reflective layer and a vertical polarization group parallel to the reflective layer. The vertical polarization group includes a connected gradient balun and a dipole, and the feeding point is located at the center of the gradient balun. The present invention provides a circumferentially arranged omnidirectional antenna array to receive horizontally polarized electromagnetic waves, and designs a four-dipole array to receive vertically polarized electromagnetic waves. This allows the antenna to operate in multiple polarization states and has good omnidirectional characteristics.

The invention discloses a wave-absorbing metasurface low-profile wide-angle RCS (radar cross section) reduction tight coupling dipole antenna. The array is composed of a radiation layer, a middle layer, a wave-absorbing metasurface layer and a metal ground layer. The top layer of the radiation layer is a dipole antenna, and the tail ends of radiation arms of the dipole antenna are loaded with coupling patches through metal through holes; the middle layer is a dielectric substrate; the top layer of the wave-absorbing metasurface layer is a pair of symmetrical trident-shaped resistive films loaded with metal through holes, and the bottom layer of the wave-absorbing metasurface layer is a dielectric substrate; the metal ground layer is located at the lowermost layer. According to the invention, the wave-absorbing metasurface is embedded in the tight coupling dipole array antenna to replace a traditional metal ground, so that a low-profile structure is realized. According to the antenna, within the frequency band of 7-14 GHz, the wave absorbing efficiency is higher than 75% when electromagnetic waves are incident at the wide angle of 0-60 degrees, meanwhile, good radiation performance and wide-angle scanning capacity are kept, and the radar cross section is remarkably reduced. The method can be popularized to the low radar cross section design of a traditional antenna, and is suitable for radar and wireless communication systems.

The present invention relates to the field of dipole source construction, and more specifically to a dipole source construction method and computer device based on finding a minimum impedance path. The method includes: determining the composition of a dipole model based on the radiation of a PCB noise source based on multi-level expansion theory, calculating the dipole magnetic field based on the mirror principle and superposition theorem; calculating the initial value of a uniformly distributed dipole array based on the relationship between the distance between the observation point and the radiation source and the magnetic field intensity, and the near-field scanning result; calculating the impedance of the dipole array based on the negative correlation between impedance and current and the positive correlation between dipole moment and current magnitude, and finding the dipole minimum impedance path based on the average distance norm and an improved minimum path algorithm; using a differential evolution algorithm to optimize the amplitude of the dipoles that constitute the minimum impedance path, and evaluating the accuracy of the dipole equivalent source construction. The present invention is suitable for constructing a simplified equivalent radiation source model for a PCB.

This invention discloses a design method and structure for a half-mode dielectric ridge parallel plate waveguide dual-beam wide-angle scanning leaky antenna based on PCB technology. Manufactured using a fully printed circuit board process, it includes a core structure of a half-mode dielectric ridge parallel plate waveguide transmission line formed by laminating three dielectric substrates, a metallized via array disposed at the edge of the waveguide's non-radiating open aperture to suppress energy leakage, and a periodic dipole array symmetrically arranged on the radiating open aperture side of the waveguide. This invention solves the technical problems of high manufacturing cost, narrow scanning range, and difficulty in implementing dual beams in traditional leaky antennas, providing a low-cost, high-performance, and easily integrated antenna solution.

The invention relates to an antenna device (102) comprising a low-frequency array (104) of low-frequency dipoles (112) having respective centres (112c) aligned on a so-called vertical axis (A1); a high-frequency array (106) of high-frequency dipoles (114) having respective centres (114c) following one another vertically; and a support (115) for the low-frequency dipoles (112) and the high-frequency dipoles (114). The device is characterised in that the high-frequency dipoles (114) are arranged so that the centre (112c) of each low-frequency dipole (112) is positioned vertically between the centres (114c) of a pair (P1; P2) of two high-frequency dipoles (114).

This invention discloses a dual-polarized magnetoelectric dipole array antenna. The array antenna consists of antenna elements and a supporting structure. Multiple antenna elements are arrayed within the supporting structure. Each antenna element includes a radiating structure and a feeding structure. The radiating structure is a multi-layer structure with feeding structures arranged between its layers. The feeding structure employs dual-polarized microstrip feed lines. One side of each of the two microstrip feed lines is bridging and cross-laid on the lower surface of the bottom layer of the radiating structure. The feeding structure also includes two orthogonally arranged H-shaped coupling slots, which are arranged on the upper surface of the bottom layer of the radiating structure. This invention achieves ±45° dual-polarization through H-shaped slot coupling feeding and uses a slot coupling feeding and dual-polarized feed line co-layer design, compressing the antenna profile to 0.12λ0. The operating frequency band covers 3.2–5.36 GHz, the array antenna gain is better than 8 dBi, and the dual-polarization port isolation is better than 23 dB. It can simultaneously meet the requirements of the n78 and n79 frequency bands in 5G communication and is suitable for low-cost, miniaturized 5G base station equipment.

The utility model discloses a dual-polarization printing umbrella-shaped dipole array antenna, which comprises a reflecting plate, a plurality of umbrella-shaped dipole antenna units and a feed network PCB (printed circuit board), and is characterized in that a plurality of cross-shaped grooves are formed in the reflecting plate; each umbrella-shaped dipole antenna unit comprises a first radiation unit and a second radiation unit, the first radiation unit is inserted on the second radiation unit, and the first radiation unit and the second radiation unit are orthogonally engaged; the first radiation unit and the second radiation unit are inserted into the cross-shaped groove; and the second radiation unit of each umbrella-shaped dipole antenna unit and the feed network PCB are integrally designed. According to the umbrella-shaped dipole array antenna, the first window is arranged on the first radiation unit, the second window is arranged on the feed network PCB, the feed microstrip is in butt joint with the feed point of the first radiation unit in structure, batch installation and positioning of the radiation units are realized through welding, and the assembling process of the umbrella-shaped dipole array antenna is greatly simplified.

The invention provides a ground station broadband magnetoelectric dipole array antenna. The ground station broadband magnetoelectric dipole array antenna comprises a magnetoelectric dipole array, a power division network substrate and a power division feed network. On the basis of the scheme, the magnetoelectric dipole array is connected with the power division feed network through the metalized via holes embedded in the power division network substrate. The magnetoelectric dipole array is placed on the upper layer of the power division network substrate, and the power division feed network is printed on the lower layer of the power division network substrate. On the basis of the scheme, the magnetoelectric dipole array is composed of 32 magnetoelectric dipole antenna units, the 32 magnetoelectric dipole antenna units are arranged according to a 4 * 8 arrangement mode, and the size of the whole array plane is 480 mm * 960 mm * 55.1 mm. On the basis of the scheme, each magnetoelectric dipole antenna unit comprises two pairs of magnetoelectric dipole arms, an eta-shaped feed probe and a folding reflecting plate. The antenna is low in cost and easy to process, and can be widely applied to a long-distance ground station communication system.

The invention discloses a broadband electromagnetic dipole antenna based on an X-shaped polarization conversion metasurface, and belongs to the technical field of electromagnetic dipole antennas. In order to solve the problems that an existing metamaterial wave absorber RCS is narrow in reduction bandwidth, an RCS antenna of a PCM chessboard structure is concentrated at the frequency band below 20 GHz and the like, the electromagnetic dipole antenna combines a 1 * 8 electromagnetic dipole array with the PCM chessboard structure, and the RCS is minimized while high gain and wide frequency band are kept; by using the X-shaped PCM unit and the mirror image unit array thereof, cross polarization conversion of reflected waves is realized in a working frequency band, a 180-degree phase difference is generated, the PCM disperses back scattering energy to a surrounding area, and normal reflection is reduced, so that the RCS of the antenna is effectively reduced, and the RCS is reduced by more than 10 dB in 74.1% of bandwidth (19.07-41.52 GHz). The electromagnetic dipole antenna disclosed by the invention has the characteristics of high gain, wide bandwidth and low RCS (radar cross section), has a wide application prospect in the fields of high-frequency wireless communication and radar stealth, and shows huge potential of future development of a stealth technology.

Systems and methods are provided for a digital beamformed phased array feed. The system may include a radome configured to allow electromagnetic waves to propagate; a multi-band software defined antenna array tile; a power and clock management subsystem configured to manage power and time of operation; a thermal management subsystem configured to dissipate heat generated by the multi-band software defined antenna array tile; and an enclosure assembly. The multi-band software defined antenna array tile may include a plurality of coupled dipole array antenna elements; a plurality of frequency converters; and a plurality of digital beamformers.

The present invention relates to the technical field of radio frequency communications. Disclosed are a broadband two-dimensional eight-beam switchable annular magnetoelectric dipole array antenna and a design method therefor. The broadband two-dimensional eight-beam switchable annular magnetoelectric dipole array antenna comprises a first four-beam unit and a second four-beam unit which form an eight-beam array antenna; array antennas in the four-beam units are both located on a same horizontal plane and arranged on dielectric substrates, are both in a four-leaf clover shape and differ by 45°, two dielectric substrates are connected, and the bottoms of the dielectric substrates are provided with metal ground planes; shorting pins are provided at the top ends of leaves of the array antennas, and sequentially pass through the array antennas and the dielectric substrates to be connected to the metal ground planes; and coaxial inner conductor metal columns are provided at the junctions of the leaves of the array antennas, pass through the array antennas, the dielectric substrates and the metal ground planes, and are connected to feed ports. The present invention provides a beam switching antenna which is small, has a wider overlapping bandwidth during multi-beam switching, and has more switching states.

The invention provides a high-frequency-ratio triple-band antenna for Wi-Fi / WiGig application. The high-frequency-ratio triple-band antenna comprises a first dielectric plate and a second dielectric plate, one surface of the first dielectric plate is defined as a front surface, the other surface of the first dielectric plate is defined as a back surface, the front surface of the first dielectric plate is provided with a reflective array surface and a rectangular patch, the back surface of the first dielectric plate is provided with a grid patch and a dipole array arranged in a blank area of the grid patch, and the grid patch and the dipole array are multiplexed as a floor in the reflective array antenna; a metal floor is arranged on one surface, opposite to the back surface of the first dielectric plate, of the second dielectric plate, and a first through hole and a second through hole which are respectively used for feeding the grid patch antenna and the dipole array antenna are formed in the metal floor; and a differential feed network, a power divider and a band-pass filter are arranged on the other surface of the second dielectric plate. The grid patch antenna, the dipole array and the reflective array antenna have a multiplexing relation in structure, three-frequency work can be realized without adding extra space, and the integration level of the antenna structure is improved.

The invention provides a broadband wide-angle tight coupling dipole array antenna working at a Ka wave band. The broadband wide-angle tight coupling dipole array antenna is composed of a plurality of antenna units arranged in a matrix mode. Each unit comprises a single-layer Rogers 5880 dielectric substrate, a bottom-layer metal floor, an upper-layer wide-angle matching layer and a tight dipole radiation layer; wherein the tail ends of vibration arms of the bow-tie-type dipole units are mutually overlapped to enhance coupling, the hyperbolic impedance transformers realize conversion from unbalance to balance and broadband matching, the short-circuit metal wires inhibit common-mode resonance, and the wide-angle matching layer is a frequency selective surface formed by rectangular metal patches. Passive edge units are additionally arranged on the two sides of the array, outer side short-circuit lines are removed to slow down the truncation effect, the metal wall and the floor are integrally machined, the active standing-wave ratio within 27.5-35 GHz is smaller than or equal to 2.1 when + / -50-degree scanning is supported, and the efficiency is larger than or equal to 80%. The antenna has the advantages of low profile, high integration, wide bandwidth angle and high radiation efficiency, and is suitable for a millimeter wave communication system.

The invention discloses an electromechanical system integrated electromagnetic radiation characteristic modeling method based on a dipole array theory and an adaptive differential optimization algorithm, and the method comprises the following steps: 1), carrying out the near-field measurement, and obtaining the test surface near-field data of an electromechanical system at a frequency f test point; 2) using an ADE algorithm to minimize an error between a radiation electric field generated by the dipole array and a test electric field so as to establish an optimal equivalent dipole array under a frequency f; and 3) calculating the radiation characteristics of the electromechanical system according to the relative error between the optimal equivalent dipole array and the radiation field. The modeling prediction method provided by the invention can be directly used for the integrated radiation calculation of a large number of electromechanical systems in practice, the electromagnetic radiation characteristics of the electromechanical systems can be better predicted, and a basis is provided for the electromagnetic compatibility design of the subsequent electromechanical systems.

The application discloses a high-resolution P-wave time difference extraction method, device and equipment, and the method comprises the following steps: extracting a low-resolution P-wave time difference curve and a P-wave arrival time curve of a target well based on monopole array waveform data of the target well, and extracting a low-resolution S-wave time difference curve of the target well based on dipole array waveform data of the target well; constructing a borehole earth numerical model of the target well based on a caliper logging curve, a density logging curve and the low-resolution P-wave time difference curve and the low-resolution S-wave time difference curve of the target well, and determining a simulated monopole P-wave waveform curve of the target well based on the borehole earth numerical model; performing frequency-wave number domain analysis based on the simulated monopole P-wave waveform curve to determine a high-order P-wave frequency band distribution range; performing filtering processing on the measured monopole array waveform data based on the high-order P-wave frequency band distribution range to obtain high-order P-wave array waveform data; and determining a high-resolution P-wave time difference based on the high-order P-wave array waveform data and the P-wave arrival time curve.