4 results about "Microstrip patch array" patented technology

This invention relates to the field of antenna technology, specifically to a compact dual-band monopulse feeding system and method, comprising a Ku-band monopulse feeding system and a Ka-band monopulse feeding system. The two monopulse systems are spatially layered. The Ku-band monopulse feeding system includes a waveguide slot array antenna and a waveguide sum-difference network. The Ka-band monopulse feeding system includes a microstrip patch array antenna and a microstrip sum-difference network. The sum-difference networks of the two monopulse feeding systems are connected to the array antenna to radiate the monopulse signal in the form of sum beams, elevation difference beams, and azimuth difference beams for target detection and tracking. The monopulse feeding system adopted in this invention, through its compact and miniaturized structural design, can be applied to the feeding and transmission of dual-band monopulse signals in multi-frequency composite precision guidance systems on missile platforms.

The utility model discloses a kind of middle-low orbit satellite antenna assemblies, including deployable phased array antenna main body, intelligent heat dissipation module, multi-frequency band isolation feed network and self-adaptive beam control unit;Main body contains 6 foldable subarrays, each subarray is connected with the magnetic rheological hinge of built-in electromagnetic coil and magnetic rheological liquid cavity center pivot, subarray surface is equipped with the nested radiation unit of "outer Ku frequency band dipole array+inner Ka frequency band microstrip patch array", there is polytetrafluoroethylene isolation layer between the two and feed point staggered;Intelligent heat dissipation module is attached to the back of main body, containing phase change material layer, micro heat pipe array and graphene skin;Feed network contains Ku / Ka power division network and sequentially connected X-type isolator, dual-band circulator, wave filter;Beam control unit contains DBF chip, T / R component and PWM power management circuit.

The utility model relates to a concentric double -ring rotation circular polarization's scroll field antenna based on isomeric unit belongs to wireless communication technical field, solved the problem of poor radiation performance of array antenna in the prior art. The scroll field antenna of the utility model, include: dielectric substrate and the concentric double -ring array's microstrip patch array element of sticking on the surface of dielectric substrate, microstrip patch array element is composed of inner ring array element and outer ring array element, inner ring array element includes a plurality of square truncated microstrip patch, square truncated microstrip patch is square unit through the formation of the truncation of one 90 degree triangle, outer ring array element includes a plurality of triangular truncated microstrip patch, triangular truncated microstrip patch is triangular unit through the constitution of the truncation of two acute triangle. The scroll field antenna of the utility model has realized the optimization of the bandwidth, axial ratio, circular polarization performance of array antenna.

The invention discloses a high-gain low-sidelobe millimeter wave radar antenna, and belongs to the technical field of vehicle-mounted millimeter wave radars and antennas. The antenna comprises an RO3003 dielectric substrate, a metal grounding plate and a series-feed microstrip patch array arranged on the upper surface of the substrate. The array adopts an equal-width patch design, the current distribution on the surface of each radiation patch is effectively regulated and controlled by arranging a slot with a specific depth at the joint of the patch and the microstrip feeder line, and the unequal-amplitude distribution of strong current of the middle patch and weak current of the patches at the two ends is realized, so that the side lobe level of the antenna is remarkably inhibited. The 1 * 8 array antenna is compact in structure, the peak gain of the finally realized 1 * 8 array antenna near 78.5 GHz reaches 15dB, the first side lobe level is suppressed below-20dB, all side lobe levels are below-18dB, and the 1 * 8 array antenna is particularly suitable for a vehicle-mounted millimeter wave radar system with high requirements on the detection distance and the anti-interference capability.