255 results about "Patch antenna" patented technology

A right-hand circularly-polarized patch antenna comprising a ground plane and a patch connected to each other with one or more wires for which the wire shape and location of the end points are selected such that they do not cause an antenna mismatch, and the electrical current carried in the wires produces an extra electromagnetic field subtracted from the patch field in the nadir direction.

Systems, devices, and methods related to dual linear polarized wideband antennas for compact antenna arrangements are provided. An example antenna structure includes a multi-layered printed circuit board (PCB); a folded magnetoelectric antenna element including a first portion disposed on a first layer of the multi-layered PCB and a first fold portion contiguous to the first portion and extending to at least a second layer of the multi-layered PCB; and a patch antenna element disposed on a third layer of the multi-layered PCB, wherein the first, second, and third layers are separate layers of the multi-layered PCB. The antenna structure further includes a first feeding port electrically coupled to the patch antenna element, and a second feeding port electrically coupled to the patch antenna element, where the first and second feeding ports are associated with different polarizations.

The invention discloses a miniaturized circular patch antenna loaded with four symmetrical L-shaped grooves, and relates to the technical field of wireless communication. The antenna comprises a circular patch, a dielectric substrate, a metal grounding plate and a coaxial line. The circular patch clings to the upper surface of the dielectric substrate, and the metal grounding plate is arranged on the lower surface of the dielectric substrate; four L-shaped grooves are formed in the circular patch, the geometric dimensions of the four L-shaped grooves are the same, and the four L-shaped grooves are symmetrically distributed around the circle center; the circular patch adopts a coaxial line for feeding, the inner conductor is connected to the circular patch, and the outer conductor is connected with the metal grounding plate. The symmetrical L-shaped grooves are etched in the circular patch, so that the resonant frequency of the antenna is effectively reduced, and the electrical size of the antenna is reduced; the antenna keeps relatively high gain and radiation efficiency, and has the advantages of simple structure and excellent performance.

The invention relates to an anti-interference high-selectivity omnidirectional planar filtering antenna, a filtering processing method and application, and the planar filtering antenna comprises a metal radiation layer, a first dielectric substrate, a first coupling layer, a second dielectric substrate and a second coupling layer which are sequentially stacked. The second dielectric substrate is provided with a plurality of metalized through holes which are distributed in an annular array mode and define a substrate integrated cavity with the first coupling layer and the second coupling layer, the metalized through holes divide the second coupling layer into an inner side patch and an outer side ring piece, and the inner side patch is evenly provided with a plurality of resonance grooves; and a feed probe penetrating and extending to the second dielectric substrate is arranged at the center of the bottom of the metal radiation layer. According to the invention, the substrate integrated waveguide technology is adopted, the substrate integrated cavity is formed, and a high-selectivity filtering effect is realized by utilizing the characteristic of high Q value, so that the interference of out-of-band signals is effectively inhibited, and the advantages of the patch antenna and the substrate integrated cavity are effectively combined.

The invention provides an AI-driven multi-wireless-signal candid photographing detection device which comprises a mounting shell, a hardware acquisition layer, an edge computing layer, a cloud federation layer and a man-machine interaction layer, and all the layers achieve signal interaction through PCIe4.0 and SPI hardware interface communication protocols. The broadband patch antenna, the ceramic antenna and the helical antenna are adopted to cover a full target frequency band, the millimeter wave radar chip is matched, the 16 * 16 metamaterial RIS panel is additionally configured, and the weak signal receiving power is improved by synchronously controlling a reflection phase focusing signal, so that the problem of missing detection is solved; the multi-signal tensor decomposition unit and the CNN-LSTM signal classification unit construct frequency, intensity, time and phase four-order tensors, and overlapped signals are separated through Khatri-Rao space-time coding; a three-layer CNN and a two-layer LSTM are combined, precise classification of candid photographing signals is realized, the misjudgment rate is reduced, millimeter wave assisted precise distance measurement is combined with millimeter wave flight time data and an RSSI attenuation model, a distance measurement error is controlled through a dynamic weighting algorithm, and the problem of positioning misalignment is solved.

A unit cell for an ultra-dense multiband antenna comprises a reflector; a first frequency dipole disposed on the reflector, the first frequency dipole having four first frequency dipole arms; a plurality of second frequency dipoles disposed on the reflector, each of second frequency dipoles having four second frequency dipole arms; and a plurality of third frequency radiators disposed on the reflector, each third frequency radiator having a patch antenna element that is disposed above the reflector and a cavity cup frame disposed below the reflector, wherein each of the first frequency dipole arms is disposed above a second frequency dipole, and wherein each of the second frequency dipole arms is disposed above a third frequency radiator.

A patch antenna element has a plurality of patches that are coplanar, each having a length along a resonant dimension that is no greater than one-quarter of a wavelength of a maximum operating frequency of the patch antenna element. The antenna element also includes one or more discrete reactive elements. For each pair of neighboring patches of the plurality of patches, the pair forms an electrically insulating space therebetween. At least one discrete reactive element lies within the electrically insulating space and is electrically connected to both of the neighboring patches of the pair. A patch antenna combines the patch antenna element with a counterpoise that is parallel to, and displaced from, the patch antenna element. Each discrete reactive element may be an inductor or capacitor, either planar or non-planar. The patch antenna may be configured as a dual-polarization patch antenna or quarter-wave patch antenna.

An antenna structure includes: an antenna board including a first surface and a second surface located that is opposite to the first surface; patch antenna elements arrayed on the first surface of the antenna board; a feeding electrode formed on the second surface of the antenna board and electrically connected to each of the patch antenna elements; a power supply control board that is disposed away from the second surface of the antenna board, extends in a direction intersecting the second surface of the antenna board, and includes a third surface and a fourth surface that is opposite to the third surface; and a connection member disposed on the second surface of the antenna board and on at least one of the third surface and the fourth surface of the power supply control board, the connection member electrically connecting the feeding electrode and the power supply control board.

The application relates to the technical field of positioning and navigation, and discloses an embedded AGV positioning and navigation method based on differential GNSS, which comprises the following steps: arranging a plurality of passive GNSS patch antennas on the top of a vehicle in a circumferential manner; combining the carrier-to-noise ratio and the elevation angle information output by double receivers to construct a low-elevation satellite set; calculating the carrier-to-noise ratio difference on the symmetrical antennas; and performing periodic analysis to extract the environmental shielding law and divide phase intervals. The system can dynamically select the optimal antenna combination in each phase interval, and realizes real-time differential navigation solution in the navigation operation, so that the signal attenuation and navigation interruption problems caused by the narrow lane shielding can be effectively overcome, and the high-precision, stable and continuous navigation of the AGV in a complex environment can be ensured.

An antenna assembly includes a patch antenna, a metal layer, and a feed-in signal layer. The metal layer is disposed on a side of the patch antenna and includes a first slot and a second slot. The feed-in signal layer is disposed on a side of the metal layer opposite the second antenna and includes a transmitting port, a receiving port, a hybrid coupler, and two microstrips. The transmitting port and the receiving port are connected to the hybrid coupler, and the two microstrips are extended in the direction away from the hybrid coupler. Projections of two ends of the two microstrips onto the metal layer are overlapped with the first slot and the second slot. An antenna array is also mentioned.

The disclosed embodiments relate to an isolation method for full-duplex communication. The full-duplex antenna system includes a Tx (transmit) signal path comprising one or more elements, each element representing a power amplifier, one or more filters, and a Tx port of a Tx patch antenna operating in the Tx band to transmit an output signal to a satellite. Each of the one or more elements includes an Rx (receive) signal path, comprising a low-noise amplifier driven by the Rx port of an Rx patch antenna operating in the Rx band to receive an input signal from a satellite. The Rx band is separated from the Tx band by a guard band. The filters, together with the physical isolation between the Tx and Rx signal paths, provide sufficient isolation to reduce coupling between the Tx and Rx signal paths, thereby allowing the full-duplex antenna system to operate in full-duplex mode.

A patch antenna includes: a first element; and a second element located so as to face the first element, wherein the first element includes a first main body portion facing the second element, and at least one first bent portion extending from the first main body portion toward the second element, and a wave source is generated between the second element and the first bent portion.

A liquid crystal antenna and a method of beamforming of electromagnetic waves are provided. The method includes: receiving by a feeding circuit board a feeding signal to form a feeding electromagnetic wave; applying a plurality of bias voltages respectively between a ground plane and a plurality of patch antenna units of a liquid crystal modulation structure to form an amplitude interference pattern, where a liquid crystal layer of the liquid crystal modulation structure is disposed between the ground plane and the patch antenna units; and utilizing interference of the feeding electromagnetic wave and the amplitude interference pattern to form an electromagnetic beam, where the electromagnetic beam is directed to a specific angle, and an intensity and the specific angle of the electromagnetic beam are modulated according to the variations of the feeding electromagnetic wave and the amplitude interference pattern.

There is disclosed a data transmission apparatus and tuned Multiple-Input-Multiple Output (MIMO) antenna comprising a dielectric substrate and an array of antenna elements arranged adjacent one another on a first side of the substrate. Each of the antenna elements comprises a patch antenna and a dielectric material positioned at a corner of the patch antenna having a selected permittivity. The resonant frequency of the antenna element is tuned through the selected permittivity of the dielectric material. In a particular embodiment the dielectric material comprises a ceramic.

The present application describes and discloses a High-Performance Circular Polarization Compact Antenna Design, in particular a new design and arrangement for a patch antenna. The proposed patch antenna comprises a dielectric substrate layer sheet with two sides; a ground plane covering a first side of the dielectric substrate layer; and a patch layer covering a substantial part of a second side of the dielectric substrate layer, opposed to the first side; characterized by patch layer comprising circular features.

The utility model provides a four-array microstrip antenna applied to a high-frequency wireless charging technology, which comprises patch antennas arranged in a 2 * 2 array and a feed network connecting the four patch antennas, and the feed network comprises two identical T-shaped power dividers. Four output ports of the two T-shaped power dividers are respectively connected with a patch antenna through a first microstrip line, and input ports of the two T-shaped power dividers are connected through a second microstrip line. The four-array microstrip antenna provided by the utility model has a good transmission characteristic, and the radiation gain of the antenna array is improved.

Transmitters, receivers, transceivers, transport networks, and methods of use are described herein, including a transmitter comprising a client-side input, transmitter circuitry, and antennas. The client-side input receives baseband signals having client data encoded therein. The transmitter circuitry receives the baseband signals from the client-side input and generates antenna feed signals based on the baseband signals. The antennas receive the antenna feed signals from the transmitter circuitry, generate radiated signals based on the antenna feed signals, and couple the radiated signals into hollow waveguides. The radiated signals are radiated electromagnetic waves configured for coherent detection and having one or more frequencies in a range between 300 Gigahertz (GHz) and 10 Terahertz (THz). The antennas include one of a helical antenna, a waveguide probe antenna, a tapered antenna, a patch antenna, and a slot antenna.

The invention discloses a compact dual-frequency patch antenna based on a decoupling structure shaped like a Chinese character'tu ', which comprises a top metal layer, a dielectric substrate, a metal ground layer and a coaxial probe feed structure, and a decoupling structure shaped like a Chinese character'tu ', which is formed by symmetrically arranging four metal strips along the horizontal direction, is arranged between the two patches. The antenna can synchronously work at double frequency bands of 3.39 GHz and 5.45 GHz, an electromagnetic weak field area is formed at the position of the feed probe through the decoupling structure shaped like the Chinese character'tu 'to block coupling, and meanwhile, a radiation pattern is corrected by means of a symmetrical structure. The antenna has the advantages of being low in profile, compact in structure, good in dual-frequency decoupling effect and stable in radiation pattern, the integration degree of the dual-frequency antenna array can be improved, and the antenna is suitable for a wireless communication system.

The invention relates to the technical field of antennas, in particular to an annular patch antenna and a multi-antenna system thereof. The antenna structure comprises a grounding plate, an annular patch, a group of grounding branches, a group of coupling branches and a feed assembly, the grounding plate is located at the lowermost layer of the antenna structure, the annular patch is arranged above the grounding plate, the center of the annular patch is provided with a middle cavity area, the coupling branches are located on the outer side of the annular patch, the coupling branches are extension structures of the annular patch and / or the grounding plate, and the feed assembly is located in the middle cavity area. One end of each grounding branch is connected with the inner side of the annular patch, the other end of each grounding branch is connected with the grounding plate, and the annular patch inputs a radio frequency signal through the feed assembly. The electric field weakening area is formed in the annular patch, space redistribution of radiation energy is achieved, multi-antenna self-isolation and common-caliber integration are achieved under the condition that the mass is not increased, and therefore the performance advantages of light weight, conformalization, system compatibility and the like are considered.

The invention relates to the technical field of antennas, in particular to a circular polarization patch antenna with a wide axial ratio bandwidth. The antenna comprises a patch, a grounding plate, parasitic units and a reactance load structure, the grounding plate is located at the lowest layer of the whole antenna, the patch and the parasitic units are arranged above the grounding plate at intervals, the parasitic units are arranged near the patch, coupling gaps are arranged between the parasitic units and the patch at intervals, and the reactance load structure is connected to the parasitic units. The reactance load structure adopts one or more combinations of the following structural forms: a capacitive element combined connection conductor, an extension branch knot and a short circuit column. According to the circularly polarized patch antenna with the wide axial ratio bandwidth, the parasitic unit regulated and controlled by the load is arranged beside the main radiation patch, so that the problems of narrow axial ratio bandwidth, complicated structure or high cost of a circularly polarized antenna in the prior art are effectively solved.

An integrated antenna device and a phase calibration method thereof are provided. The integrated antenna device includes an antenna array formed by patch antenna units and a beamforming integrated circuit. The antenna array is disposed on a first surface of a substrate. The patch antenna units are symmetrically arranged around an array center of the antenna array, and each of the patch antenna units includes a first feed point and a second feed point. The BFIC is disposed on a second surface of the substrate and connected to the first feed point and the second feed point of each patch antenna unit. The first feed point and the second feed point of each patch antenna unit are disposed outside each patch antenna unit relative to the array center of the antenna array. The BFIC overlaps a central area of the antenna array.

The invention discloses an MIMO patch antenna and a decoupling design method thereof, and relates to the technical field of antenna decoupling, and the antenna comprises a main dielectric substrate, a metal ground and a port antenna module. The metal ground is arranged on the lower surface of the main dielectric substrate, the port antenna module is distributed on the upper surface of the substrate, the port antenna module comprises two parallel and symmetrical radiation units, the two radiation units are rectangular patches, the short edges of the two radiation units are parallel, and the distance between the short edges of the two radiation units is smaller than a preset distance threshold value, so that ultra-narrow distance layout is realized to save space. Each rectangular patch is provided with a feed port, a metal probe which penetrates through the patch is arranged in the middle of each rectangular patch, the bottom of each metal probe is located in the main dielectric substrate, and the frequency band can be expanded to cover the N79 frequency band; a square annular gap and a rectangular gap are further formed in the patch, the capacitor is embedded in the rectangular gap, and the short edge of the rectangular gap coincides with the center of the square annular gap; metal short-circuit columns which penetrate through the patch and the substrate and are connected with the metal ground are arranged at the right-angle and square annular gaps of the patch, so that the port isolation can be improved. According to the antenna, the contradiction between the terminal space and the number of antennas can be relieved, the frequency band coverage and the signal stability are guaranteed, and the high-integration MIMO communication requirement is met.

A coaxial connection assembly includes a first spring pin fixed to a first component to be connected, such as an antenna which may be a patch antenna. The assembly also includes a first contact on a circuit board for connecting to the first component by way of the first spring pin. The assembly also includes a front end module (FEM) cover for spacing apart the first component and the circuit board. The FEM cover defines a first channel through which the first spring pin extends. The FEM cover is formed from a conductive material, and the first channel contains a dielectric medium or substance.

The application discloses a 5G millimeter wave dual-frequency antenna based on a multilayer metasurface and belongs to the field of radio frequency front-end devices; the upper surface of a lower dielectric layer is provided with a slotted patch, and the lower surface of the lower dielectric layer is provided with a metal ground; the slotted patch is a square metal plate, which is provided with a first L-shaped slot and a second L-shaped slot; the two branch ends of the first L-shaped slot are provided with extension sections; the first L-shaped slot and the second L-shaped slot surround a square ring, and the extension section and the branch of the first L-shaped slot adjacent to the extension section have a spacing greater than zero; the upper surface of a middle dielectric layer is provided with a lower metasurface structure; the lower metasurface structure is composed of multiple metasurface units arranged in a rectangular array mode; the upper surface of an upper dielectric layer is provided with an upper metasurface structure; and a feeding structure is located on the upper surface of the lower dielectric layer. The application can produce dual frequency bands by slitting the patch antenna, load double-layer metasurface structures above the patch antenna, and increase the frequency band width and the beam width of the antenna.

The utility model discloses a multi-band ultra-wideband patch antenna working in an X band. The multi-band ultra-wideband patch antenna comprises a dielectric substrate, a first rectangular patch and a second rectangular patch, the first rectangular patch is used as a microstrip feed unit, and the first narrow edge of the first rectangular patch is aligned with the edge of the dielectric substrate; the side edge of the second rectangular patch is spliced with the second narrow edge of the first rectangular patch to form a T-shaped patch; two first rectangular slots are formed in the side edge of the second rectangular patch, and a second rectangular slot and two third rectangular slots are formed in the second rectangular patch; the two third rectangular open grooves are parallel to the first rectangular open groove and located in the two ends of the second rectangular open groove. And the two third rectangular slots and the second rectangular slot are arranged at intervals to form an H-shaped layout. The ultra-wideband antenna has ultra-wideband characteristics and a plurality of working frequency bands, and meets the requirements of a modern high-frequency communication system on performances such as bandwidth, gain, directivity and the like.

The application relates to a single-layer multi-frequency GNSS antenna, which comprises a patch antenna body, the patch antenna body comprises a dielectric substrate and a ground plane, the center of the upper surface of the dielectric substrate is provided with a clover-shaped high-frequency radiation metal plate, the periphery of the high-frequency radiation metal plate is provided with a low-frequency radiation metal plate, a first non-metal gap is arranged between the high-frequency radiation metal plate and the low-frequency radiation metal plate, four edges of the low-frequency radiation metal plate are provided with accommodation grooves, long-strip-shaped radiation metal patches are arranged in the accommodation grooves, and rectifier radiation parts are arranged between four corners of the low-frequency radiation metal plate and adjacent two accommodation grooves, and the four rectifier radiation parts correspond to four sharp corners of the clover-shaped high-frequency radiation metal plate. The application belongs to the technical field of antennas, the radiation performance of the antenna is optimized through a special geometric layout, the foundation of antenna miniaturization and low cost is laid, and the dual-band coverage and good radiation characteristics are preliminarily ensured.

A radiation patch, an antenna substrate, an antenna, and a communication device. The communication device has an antenna, the antenna has an antenna substrate, and the antenna substrate has a radiation patch, wherein a plurality of branches are disposed at the periphery of the radiation patch; the plurality of branches are symmetrical about the center of the radiation patch; and a starting end of each branch is connected to the radiation patch and is suitable for disposing an open-circuit stub, and a tail end of the branch is suitable for disposing a short-circuit stub.

The application discloses a ring-shaped overlapped sub-patch antenna structure of a bolt loosening detection sensor, which comprises a first insulating part provided with an outer circumferential surface and a second insulating part provided with an inner arc surface, a ring-shaped first radiation patch is covered on the outer circumferential surface, a curved rectangular second radiation patch is covered on the inner arc surface, the first insulating part is fixedly connected on the head of a bolt to be detected, the first radiation patch is coaxially arranged with the bolt to be detected, the second insulating part is fixedly connected on a connected part, the first radiation patch is concentrically arranged with the second radiation patch and overlaps with each other; when the bolt is loosened, the first radiation patch is spirally or linearly displaced relative to the second radiation patch, according to the relationship between the length variation of the overlapping of the first radiation patch and the second radiation patch and the variation of the longitudinal resonant frequency, the bolt displacement can be calculated by determining the variation of the longitudinal resonant frequency, so that the bolt loosening amount under different displacement conditions can be accurately detected.

The invention discloses a double-frequency mutual-coupling-removing patch antenna based on double strips arranged in parallel, and a top metal layer of the antenna is of a left-right symmetrical structure and comprises two rectangular metal patches arranged side by side in the left-right direction; the upper edge and the lower edge of each patch are each provided with a rectangular groove parallel to the edge of the patch. Two parallel metal strips are arranged below the two patches; the inner conductors of the two coaxial feed ports are respectively connected with the two rectangular metal patches, and feed points are respectively positioned on the vertical center lines of the patches; the two metal strips and the two coaxial feed ports are arranged in the same direction; in the horizontal direction, the two metal strips are oppositely located between the two coaxial feed ports. According to the invention, two slots are formed in each of the two patch units, so that the patch works on two frequency bands, and two metal strips which are parallel to the two patch units and have different lengths are arranged below the two patch units, so that a weak field is generated on the mutual coupling patch, and mutual coupling removal of the dual-frequency antenna is realized.

The invention provides a moving and standing wave electrode composite loading microwave photon receiving antenna and a signal receiving method thereof.The antenna comprises a dual-band combined plane patch antenna and a lithium niobate film moving and standing wave electro-optical modulation chip, a high-frequency antenna and a moving wave electrode are mutually connected through gold wire bonding, and a low-frequency antenna and a standing wave electrode are mutually connected through gold wire bonding; and a single beam of light wave is modulated by the two electrodes in sequence by using a cascade light path. The signal receiving method comprises the steps of light wave injection, dual-band signal induction and loading, sequential modulation based on the lithium niobate electro-optical effect, photoelectric conversion and signal extraction. Through the traveling wave and standing wave electrode composite loading and optical domain modulation mechanism, the bottleneck that the bandwidth of a traditional antenna is limited by impedance matching is broken through, high-sensitivity receiving is achieved within the ultra-wide band of 10 MHz to 20 GHz, and meanwhile the ultra-wide-band antenna has the advantages of being compact in structure and high in electromagnetic interference resistance and is suitable for ultra-wide-band weak field detection and high-precision electromagnetic signal receiving.