26 results about "Microstrip antenna array" patented technology

The invention discloses a pre-phase-based one-bit beam reconfigurable metasurface antenna device, which comprises a pre-phase-based one-bit metasurface antenna unit which is designed by adopting a resonance scattering analysis method, two microstrip line paths with different lengths are switched through a single-pole double-throw switch, so that a 180-degree phase difference of a signal is obtained to realize 1-bit phase regulation and control, and the one-bit beam reconfigurable metasurface antenna device is obtained. Electromagnetic simulation software is utilized to optimize geometric parameters and output reflection electromagnetic response of the design model; the overall design of the reconfigurable antenna array panel is carried out based on the designed unit model, and the reconfigurable antenna array panel comprises a sub-panel composed of a plurality of low-cost microstrip antenna array units and a control panel connected with external feed equipment and a main panel.

The invention relates to a miniaturized high-isolation broadband 1 * 2 microstrip antenna array which comprises a lower-layer dielectric substrate, a metal bottom plate attached to the lower end and an upper-layer dielectric substrate. An antenna body used for radiating received signals is attached to the upper end of the antenna body. The two U-shaped short-circuit plates are vertically arranged on the lower dielectric substrate and the upper dielectric substrate, the upper ends of the two U-shaped short-circuit plates are connected with the antenna main body, and the lower ends of the two U-shaped short-circuit plates penetrate through the lower dielectric substrate and the metal bottom plate to be grounded; and the upper ends of the two metal probes are connected with the antenna main body, and the lower ends penetrate through the lower dielectric substrate and the metal bottom plate to be grounded. The miniaturized high-isolation broadband 1 * 2 microstrip antenna array has good radiation gain and wide working band, is simple in structure and can be manufactured by adopting a printed circuit process, so that large-scale mass production is facilitated, and the production cost is effectively reduced.

The invention discloses an omni-directional ground-air digital phased array communication system, which comprises a cylindrical antenna array, a radio frequency transceiving mother board, a frequency synthesizer power supply board, a structural frame and a cooling fan, the radio frequency transceiving mother board is mounted on the structural frame, the frequency synthesizer power panel is mounted in the structural frame, data and power transmission is performed between the radio frequency transceiving mother board and the frequency synthesizer power panel, the cylindrical antenna array is conformally mounted on the structural frame, and the cooling fan is mounted at the bottom of the structural frame; the cylindrical antenna array comprises a plurality of single printed boards, each single printed board is integrated with a microstrip antenna array adopting cosecant square forming, the azimuth plane of the cylindrical antenna array can realize 360-degree scanning, and the pitching plane is fixed cosecant square forming; the radio frequency transmit-receive mother board comprises a radio frequency transmit-receive circuit, a digital transmit-receive circuit and an FPGA. According to the invention, 360-degree omnibearing radiation and electromagnetic signal receiving can be realized, a multi-beam digital signal receiving and transmitting function is realized, the integration degree is high, and miniaturization of the system can be realized.

The application discloses a dual-frequency microstrip antenna array with different feeding modes and relates to the technical field of antennas. The dual-frequency microstrip antenna array comprises N*N antenna array elements, each of the antenna array elements comprises four antenna units, the four antenna units are arranged in a 2*2 matrix form, and the four antenna units are fed in the same direction; in any four adjacent antenna array elements arranged in the 2*2 matrix form, the horizontal feeding directions of two adjacent antenna array elements in the vertical direction are the same, and the vertical feeding directions are opposite; the horizontal feeding directions of two adjacent antenna array elements in the horizontal direction are opposite, and the vertical feeding directions are the same. The antenna array is divided into four kinds of antenna array elements, and different feeding is conducted, so that cross polarization is greatly improved. Meanwhile, the reverse sparse array and the reverse amplitude weighting technology are adopted, so that the sidelobe of the gain pattern of the antenna is uniform, and the optimization of cross polarization and gain is realized.

The utility model discloses a millimeter wave distance measurement alarm radar and a vehicle, the millimeter wave distance measurement alarm radar is used for being embedded on a vehicle body, and the millimeter wave distance measurement alarm radar comprises a shell, a patch microstrip antenna array and a control panel. The shell is provided with a mounting cavity and a first receding opening communicating with the mounting cavity. The patch microstrip antenna array is arranged in the mounting cavity and comprises a transmitting antenna array used for transmitting electromagnetic wave signals and a receiving antenna array used for receiving the electromagnetic wave signals, and the transmitting antenna array and the receiving antenna array correspond to the position of the first avoiding opening so that the electromagnetic wave signals can pass through the first avoiding opening; and the control panel is arranged in the mounting cavity and is electrically connected with the patch microstrip antenna array. According to the patch microstrip antenna array, the first avoiding opening is formed in the shell, so that the shell is prevented from interfering with the electromagnetic wave signal, smooth transceiving of the electromagnetic wave signal is ensured, and the patch microstrip antenna array can detect the driving environment more accurately. Especially when the system is applied to a large truck, the driving blind area of the truck is reduced, and the reliability and safety are improved.

The invention provides a low-profile dual-circularly-polarized microstrip antenna array control method and system, and relates to the technical field of array control, and the method comprises the steps: constructing a multi-dimensional intelligent metamaterial feed network, employing a programmable metasurface structure, adjusting an electromagnetic wave transmission path in real time through employing a micro-electromechanical switch array, and driving an orthogonal coupling feed device to achieve precise feed. And the array performance is dynamically optimized by combining a brain-like adaptive beam forming system of a neuromorphic calculation chip. According to the invention, intelligent autonomous control of the antenna array can be realized, and the space coverage capability and the electromagnetic compatibility are improved.

The invention discloses a high-isolation single-layer microstrip antenna and an array. The antenna structure comprises at least two radiation microstrip patches, two coupling microstrip strips, a dielectric layer, a grounding layer and a gap etched in the grounding layer. The high-isolation microstrip antenna array further comprises a first feed probe and a second feed probe, and the first feed probe and the second feed probe penetrate through the dielectric layer and are connected with the first feed points and the second feed points of the two radiation patches respectively. And the coupling microstrip strip is in capacitive coupling with the patch, and parallel resonance is formed at a required resonance frequency point, so that electromagnetic coupling between the first feeding point and the second feeding point is inhibited. The gaps etched on the grounding layer are located among the units, so that the isolation of the antenna array can be further improved. High isolation between patch arrays can be achieved under the condition that patch characteristic impedance is hardly affected, and meanwhile the patch array has the advantages of being single in layer, small in size and simple in structure.

The present invention discloses a four-element dual-polarization double-layer branched microstrip antenna array, which belongs to the field of navigation technology. The antenna array comprises a four-element capacitive reactance matching embedded patch, a four-element dual-polarization patch, a microstrip branch excitation plate, a dual-polarization coaxial feeding excitation column, a bottom metal ground plate, a microstrip line feeding excitation plate and a polarization port; the bottom metal ground plate is arranged at the bottom of a second substrate, the polarization ports are provided in four groups, two in each group, and the four groups of polarization ports are respectively close to the four corners of the second substrate; the bottom metal ground plate is provided with through holes corresponding to the positions of the polarization ports, the bottoms of the polarization ports are arranged in the through holes, and the tops are provided with dual-polarization coaxial feeding excitation columns extending to the top of the first substrate; the tops of the dual-polarization coaxial feeding excitation columns are provided with a microstrip line feeding excitation plate, two adjacent microstrip line feeding excitation plates are commonly connected to a four-element dual-polarization patch, and a microstrip branch excitation plate is further provided at the connection between the microstrip line feeding excitation plate and the four-element dual-polarization patch.

The application discloses a phase-amplitude weighted series-fed microstrip antenna array, which comprises an antenna including a dielectric substrate, a microstrip radiation layer printed on the upper surface of the dielectric substrate and a ground plane layer printed on the lower surface of the dielectric substrate; the microstrip radiation layer comprises a patch unit, a transmission feed line structure between the patch units and a feed structure; the patch unit is a rectangular microstrip patch 2; the patch unit generates radiation, and the array amplitude weighting is realized by adjusting the width of the patch unit; the transmission feed line connects the patch units together, and the phase weighting is realized by adjusting the length. Advantage: the application introduces phase weighting to increase the design freedom of the antenna array, effectively improves the limitation of the limited change range of the microstrip patch width, makes the shaping more flexible, and is suitable for arbitrary shape beam shaping.

The invention relates to a four-array-element microstrip antenna array working in a Beidou B3 frequency band, and belongs to the technical field of antennas. The microstrip antenna array sequentially comprises a radiation patch, a dielectric substrate 1, a metal grounding plate 1, a dielectric substrate 2 and a microstrip line feed network integrating a one-to-four power divider and a 90-degree phase shifter from top to bottom. The array is composed of four radiation patch units, and each unit adopts a double-end feed mode. Two paths of signals with equal amplitude and 90-degree phase difference are generated through the microstrip orthogonal coupler, and then are fed into the radiation patches through the metalized via holes respectively, so that circular polarization excitation is realized. The bandwidth, gain and voltage standing wave ratio indexes of the antenna all meet the requirements of a Beidou B3 band satellite navigation antenna.

The invention discloses a one-dimensional microstrip array antenna loaded with an electromagnetic metasurface, which comprises a transmission type electromagnetic metasurface layer and a one-dimensional microstrip antenna array, and is characterized in that the transmission type electromagnetic metasurface layer is arranged right above the phase center of the one-dimensional microstrip antenna array. The transmission type electromagnetic metasurface layer adopts a one-dimensional phase modulation mode, and phase modulation is only carried out on a y-axis plane perpendicular to the arrangement direction of the one-dimensional microstrip antenna array. According to the invention, high-gain, low-sidelobe and wide-angle stable scanning in a wide frequency band is realized, and batch application requirements of airborne platforms are met.

An antenna network testing device disclosed by the present invention comprises a plate body, a seat body, a first connecting assembly and a second connecting assembly, the seat body is located on a first plane, the plate body is located on a second plane perpendicular to the first plane and is connected with the seat body through the first connecting assembly, and the second connecting assembly is arranged on the seat body. The base body can be connected with a connector through a second connecting assembly, a front microstrip antenna array is arranged on one side of the plate body, a reverse umbrella-shaped dipole matching unit is arranged on the side, opposite to the front microstrip antenna array, of the plate body, and the front microstrip antenna array is connected with the reverse umbrella-shaped dipole matching unit to generate side lobes and microwave beams. Accurate testing of telecommunication parameters such as antenna network standing wave, insertion loss, phase amplitude and the like can be realized, and the testing precision and reliability are improved.

The present invention discloses a high-gain dual-polarized millimeter-wave beam-scanning antenna, comprising a planar microstrip antenna array, a reflective focusing metasurface, and a radio frequency switch. The planar microstrip antenna array serves as the feed source for the high-gain beam-scanning metasurface antenna, reducing the overall profile and volume of the antenna. Electromagnetic waves emitted by the feed antenna travel along paths of varying distances to reach each element on the metasurface, generating different reflection phases to control the angle of focus of the reflected beam, thereby enabling beam scanning at different angles. The present invention achieves a high-gain millimeter-wave scanning antenna with a mainlobe gain greater than or equal to 19.3 dBi and a reduced sidelobe level of less than 12 dB. This antenna precisely focuses millimeter-wave energy into a narrow beam, compensating for signal loss caused by high millimeter-wave propagation path loss and extending the effective transmission distance.

This invention discloses a broadband low RCS array antenna with FSR loading, wherein an absorbing layer is printed on the upper surface of a first dielectric substrate, a transmitting layer is printed on the middle and lower surfaces of a second dielectric substrate, a radiating layer is printed on the upper surface of a third dielectric substrate, and a metal base plate is printed on the lower surface of the third dielectric substrate; the second dielectric substrate comprises two dielectric substrates stacked together; the absorbing layer includes a metal square ring with four branches and lumped resistors loaded on the four sides of the metal square ring, wherein each branch is a metal rectangular ring with a bent metal strip connected to the apex of the metal square ring; the transmitting layer includes a pair of metal rings and a perforated metal plate, wherein the pair of metal rings are respectively placed on the upper and lower surfaces of the second dielectric substrate, and the perforated metal plate is placed in the middle of the second dielectric substrate; the radiating layer includes a microstrip antenna array and its feeding network loaded on the upper surface of the third dielectric substrate, and a metal base plate on the lower surface of the third dielectric substrate; the radiating layer is coaxially fed.

The invention relates to a slot coupling antenna unit, a microstrip antenna array and a radar system, a metal reflecting plate, a first air coupling layer, a metal floor, a first dielectric layer, a microstrip feeder line, a second air coupling layer, a second dielectric layer and a radiation patch are stacked in sequence, and the metal floor is provided with a coupling slot; the coupling gap is used for changing current distribution, so that current in the direction of the microstrip feeder line is cut off by the coupling gap, and part of current in the direction of the microstrip feeder line is reserved in the coupling gap; the microstrip feeder is used for receiving energy, coupling the received energy to the metal bottom plate through the first dielectric layer, and transmitting the energy to the radiation patch through the second air coupling layer and the second dielectric layer; the first air coupling layer is used for adjusting impedance matching between the microstrip feeder and the metal reflecting plate; the second air coupling layer is used for adjusting impedance matching between the radiation patch and the metal floor, the antenna unit adopts a multi-layer structure, compact layout of the antenna unit is achieved, and miniaturization of the antenna array is further achieved.

The invention discloses a foldable microstrip antenna array for satellite communication, and relates to the technical field of antennas. The double-layer dielectric substrate is arranged on the antenna carrier, the circular metal patches are respectively printed on the dielectric substrate, the metal patches are arranged in a 2 * 2 mode, rotation feeding with equal amplitude and phase sequentially lagging by 90 degrees is carried out through the 3 dB bridge, energy radiated by all the antenna units is superposed, and therefore the antenna gain is improved, and the antenna efficiency is improved. The microstrip patch antenna array can be folded along a yoz surface, can be folded in a carrier in a non-working state, has the characteristic of miniaturization and is convenient to carry and carry, the antenna is in left-hand circular polarization radiation in a frequency band range of 1.98-2.20 GHz, the axial ratio is smaller than 2 dB, the in-band gain is larger than 10 dBi, and the antenna is suitable for various working scenes.

The invention discloses an anti-interference antenna of a BD satellite receiver, and the antenna comprises an antenna bottom plate which is integrally provided with a BD antenna unit and a low-noise amplifier unit in an integrated manner, and the BD antenna unit and the low-noise amplifier unit are arranged in an isolated manner and are connected based on a shortest path; the BD antenna unit comprises a conductive carrier and a plurality of microstrip antenna array elements, the conductive carrier is mounted on the antenna bottom plate, and the microstrip antenna array elements are arranged on the surface of the conductive carrier; wherein each microstrip antenna array element comprises an independent dielectric substrate and a radiation patch arranged on the dielectric substrate. According to the invention, the design requirements of miniaturization and high performance are met.

The present invention discloses a highly integrated, low-profile, wide-angle scanning microstrip antenna array in the X-band, belonging to the field of microwave antenna technology. The antenna array of the present invention comprises a number of periodically arranged unit antennas, and the unit antenna comprises an antenna radiation layer, a feeding layer, and a reflection cavity layer that are crimped sequentially from top to bottom. The antenna of the present invention adopts a quasi-coaxial structure for feeding to achieve high integration of the microstrip antenna array and the integrated feeding board; adopts a microstrip antenna form to achieve a low profile of the array; adopts a through-air reflection cavity, which makes it easier to realize the process of the microstrip antenna array, and meets the beam scanning characteristics of ±30° in the azimuth plane and the pitch plane within 40% of the relative bandwidth of the X-band.

The invention discloses a phased array ka-band dual-polarized microstrip antenna array, and relates to the field of communication antennae, the antenna array comprises an antenna layer and a feeder line layer located at the bottom of the antenna layer, the antenna layer comprises a first dielectric substrate and a rhombic patch array arranged at the top of the first dielectric substrate; the feeder line layer comprises a second dielectric substrate and a coaxial feed network arranged at the top of the second dielectric substrate, and the coaxial feed network feeds each diamond patch of the diamond patch array through a via hole; the radiation performance of the microstrip antenna in the ka wave band is effectively improved.

The application discloses a kind of based on polarization conversion metasurface beam control antenna and its design method, it is related to antenna design technical field, the antenna includes: microstrip antenna array, interference between microstrip antenna generates plane electromagnetic wave;Multiple beam deflection units are arranged above microstrip antenna array, each beam deflection unit includes a metasurface polarization selector and a metasurface deflection grating component;Metasurface polarization selector is used to receive plane electromagnetic wave, and changes or maintains the polarization state of plane electromagnetic wave beam, and metasurface deflection grating is used to control the deflection angle of plane electromagnetic wave beam of different polarization state.The antenna of the application is combined by the superposition of multilayer metasurface polarization selector and metasurface deflection grating, and the beam is deflected and regulated, and can be mass-produced.Electromagnetic wave is generated using microstrip antenna array, which avoids using phase shifter, greatly reduces cost, reduces loss and improves system response efficiency.

The invention provides a four-channel OAM antenna for millimeter wave near field communication, which comprises a microstrip antenna array structure layer, a Butler matrix phase control network structure layer, an SICL-based phase delay network structure layer and a quasi-coaxial via hole conversion structure, and is characterized in that the quasi-coaxial via hole conversion structure comprises a first feed hole and a second feed hole; the Butler matrix phase control network structure layer, the SICL-based phase delay network structure layer and the microstrip antenna array structure layer are sequentially stacked; the end part of a microstrip line in the Butler matrix phase control network structure layer corresponds to one end of a first feed hole, and the first feed hole vertically extends from the Butler matrix phase control network structure layer and corresponds to one end of a substrate integrated coaxial line in the SICL-based phase delay network structure layer; the microstrip antenna array structure layer is provided with microstrip patch antennas, each antenna corresponds to a second feed hole, and the second feed holes extend vertically and correspond to the other end of the substrate integrated coaxial line in the SICL-based phase delay network structure layer.

The invention discloses a low-cost ultrathin broadband microstrip antenna array which is characterized by comprising a metal ground layer, a dielectric layer and a metal patch layer which are sequentially arranged from bottom to top, the metal patch layer comprises a radiation layer and a power dividing feed network, the radiation layer comprises metal patch array elements which are arranged in a periodic array mode, and the power dividing feed network is connected with the metal patch array elements. The metal patch array elements are connected through the power division feed network; the metal patch array element is a rectangular metal patch of which the two corners of the long side are cut, the rectangular metal patch is also provided with three open slots which are arranged in a triangular manner, and the open slots are parallel to the corresponding sides of the rectangular metal patch. According to the invention, the low profile is ensured, the relative bandwidth of 4.5% is realized, the patch is miniaturized by chamfering and slotting the patch, and the patch has the advantages of low cost and stable structure, and is suitable for batch production and processing.

A microstrip antenna includes a substrate, a microstrip patch disposed on a first side of the substrate, a ground disposed on a second side of the substrate and opposite to the first side, and a first shorting wall extending from one side of the microstrip patch to the ground. The first shorting wall substantially overlaps the substrate in a direction perpendicular to the microstrip antenna sheet. The first short circuit wall is located at the first non-radiation edge of the microstrip antenna. The design does not need to use a virtual unit, thereby realizing compactness.

The application discloses a wide-beam series-fed microstrip antenna array and a radar. The wide-beam series-fed microstrip antenna array comprises a substrate, a feed line, an antenna array element group and a copper layer. The feed line is arranged on the top surface of the substrate. The feed line comprises a short section and a first long straight section and a second long straight section which are arranged in parallel from the two ends of the short section to one side. The length of the first long straight section is shorter than the length of the second long straight section. The antenna array element group is arranged on the top surface of the substrate and is located between the first long straight section and the second long straight section. The antenna array element group comprises a plurality of first antenna array elements connected to the first long straight section and a plurality of second antenna array elements connected to the second long straight section. The plurality of first antenna array elements and the plurality of second antenna array elements are arranged in a staggered manner along the longitudinal direction of the second long straight section. The copper layer is arranged on the bottom surface of the substrate. The wide-beam series-fed microstrip antenna array has low design difficulty and low cost, improves the beam stability and optimizes the wide-beam characteristics.

The application provides a four-channel OAM antenna for millimeter wave close-range communication, which comprises a microstrip antenna array structure layer, a Butler matrix phased network structure layer, a SICL-based phase delay network structure layer and a quasi-coaxial via hole conversion structure, the quasi-coaxial via hole conversion structure comprises a first feed hole and a second feed hole; the Butler matrix phased network structure layer, the SICL-based phase delay network structure layer and the microstrip antenna array structure layer are sequentially stacked; the end of the microstrip line in the Butler matrix phased network structure layer corresponds to one end of the first feed hole, the first feed hole is vertically extended from the Butler matrix phased network structure layer and corresponds to one end of the substrate integrated coaxial line in the SICL-based phase delay network structure layer; the microstrip antenna array structure layer is provided with microstrip patch antennas, each antenna corresponds to a second feed hole, and the second feed hole is vertically extended and corresponds to the other end of the substrate integrated coaxial line in the SICL-based phase delay network structure layer.