12 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 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 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 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.

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 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 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.