9 results about "Microstrip array antenna" patented technology

The utility model provides a high-gain cylindrical conformal omnidirectional microstrip array antenna. The antenna comprises a metal conformal member used for providing a cylindrical conformal foundation; a metal reflection grounding layer is fully adhered to the back surface of the antenna dielectric substrate; the antenna dielectric substrate is made of a flexible material; the plurality of microstrip antennas are uniformly distributed on the front surface of the flexible dielectric substrate in an array manner along the length direction of the dielectric substrate; the one-to-more power divider is arranged in the metal conformal piece and is connected with the plurality of microstrip antennas, and the number of the microstrip antennas is the same as that of the output ports of the one-to-more power divider. Therefore, the metal conformal piece is matched with the antenna dielectric substrate to realize cylindrical conformal, and the antenna dielectric substrate is made of a flexible material so as to further reduce the height of the profile and be easily attached to other curvature surfaces, so that conformal is easier. The multiple microstrip antennas are evenly distributed in an array mode in the length direction of the antenna dielectric substrate, the one-to-multiple power divider evenly distributes input signals to the microstrip antennas, the signals are evenly radiated in the horizontal direction, and therefore high gain and omni-directivity are achieved.

The application provides a novel ultra-wideband low-profile microstrip array antenna based on a gradient slot coupling, and relates to the technical field of antenna engineering. The novel ultra-wideband low-profile microstrip array antenna based on the gradient slot coupling comprises a ground plate, a lower dielectric, a gradient feed line, an upper dielectric and a radiation unit. The ground plate is provided with a gradient slot. The lower dielectric is arranged on one side of the ground plate. The gradient feed line is arranged on the side of the lower dielectric away from the ground plate. The upper dielectric is arranged on the side of the ground plate provided with the gradient slot. The radiation unit is arranged on the side of the upper dielectric away from the ground plate. In the application, the grid radiation unit is matched with the gradient slot coupling structure to reduce the circuit Q value and realize continuous impedance transformation. The impedance bandwidth is significantly widened while the low profile and miniaturization are maintained. The units are periodically arranged to form a surface array, the high gain and anti-interference requirements are met, and the application range of the antenna is effectively expanded.

This invention discloses a broadband circularly polarized microstrip array antenna based on a hybrid S-shaped aperture and metasurface, belonging to the field of wireless communication antenna technology. The antenna employs a multi-layer stacked structure, comprising, from top to bottom, a first dielectric substrate, a second dielectric substrate, and a third dielectric substrate, and on the surfaces of each substrate are a metasurface radiating layer, a slot coupling layer, a microstrip feed network layer, and a metal grounding shield layer. The metasurface radiating layer is composed of periodically arranged rectangular metal patches; the slot coupling layer is etched with centrally symmetrical S-shaped bends; the microstrip feed network adopts a 2×2 sequential rotation architecture, providing excitation signals of equal amplitude and sequentially 90° phase difference. This invention increases the effective electrical length of magnetic flux through a topology-optimized S-shaped slot structure, achieves ultra-wideband characteristics through the hybrid resonance of slots, patches, and metasurfaces, and compensates for impedance singularities using sequential rotation feed technology, thus achieving wide bandwidth, high gain, high radiation efficiency, and excellent circular polarization performance.

The utility model provides a kind of annular array antenna applied to lower limbs foot knee physiotherapy heating, it is the cylinder structure being made of multiple sub-microstrip array antenna rotation symmetry;Wherein sub-microstrip array antenna includes dielectric substrate, coaxial feed port, metal patch;Dielectric substrate's surface is provided with at least one opening upward E-type slot along vertical axis, metal patch is installed along slot position, shape is the rectangle that E-type slot is opened, and it is compatible with the slot of dielectric substrate;Coaxial feed port is set at dielectric substrate bottom, it is the structure that circular hole is dug on bottom surface metal patch and probe is inserted in.The utility model in the annular array antenna works at 433MHz, antenna unit uses the "E" type microstrip antenna structure, with relatively wide operating band, to adapt to the influence of different sizes human calf after being inserted on antenna operating performance, the "E" type microstrip antenna unit uses 50Ω coaxial feed, facilitate control input power, improve the practicality of annular array antenna.

This application provides a microstrip array base station antenna, belonging to the field of antenna technology. The microstrip array antenna includes at least two radiating elements and a feeding network. The feeding network includes a substrate integrated waveguide resonant cavity, which generates a non-uniformly distributed electric field under external excitation. At least two output connectors are respectively connected to different electric field strength positions of the substrate integrated waveguide resonant cavity to output at least two in-phase output signals. The output connectors are correspondingly arranged with the radiating elements, and the preset power allocation ratios of the at least two output signals are different. A coupling element is disposed between the feeding network and the at least two radiating elements, and the coupling element is configured to electromagnetically couple the output signals to the radiating elements to excite them. The microstrip array antenna provided in this application has a simple feeding network structure, high integration, and can flexibly and accurately realize different power allocations across multiple ports.

The present application relates to quantum magnetic sensing and intelligent detection technical field, specifically a kind of non-contact electronic equipment ultrafast electromagnetic fault detection identification device and identification method based on diamond NV color center.This identification device includes efficient excitation microstrip array antenna module, electromagnetic fault detection identification main control board, laser modulation and coupling interface unit, photoelectric detection control interface unit, laser heat management copper-based heat dissipation assembly, voltage follower circuit control switch unit, pixel-level quantum magnetic sensing unit group, laser control circuit mainboard and photoelectric detection control mainboard;Wherein each pixel-level quantum magnetic sensing unit group includes three narrow linewidth laser excitation source, three diamond NV color center quantum magnetic sensitive element, three narrow-band optical filter and three photoelectric detector.The identification device has the characteristics of fast detection speed, high sensitivity, strong real-time, low power consumption and no need to contact the measured target, etc., can effectively improve the efficiency and accuracy of complex electronic equipment electromagnetic fault diagnosis.

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 utility model provides a microstrip array antenna with an annular windmill type structure, which relates to the technical field of communication antennas and comprises a substrate, an inner ring arm, an inner ring wing, an outer ring arm and an outer ring wing, a feeding point is arranged on the substrate, an inner ring circle and an outer ring circle are arranged by taking the feeding point as a circle center, and the inner ring circle is positioned in the outer ring circle; two ends of the inner ring arm are respectively connected with the feeding point and the circumference of the inner ring circle; the inner ring wing is arranged on the circumference of the inner ring circle, and one end is connected with the inner ring arm; the outer ring arm is connected with the inner ring circle and the circumference of the outer ring circle, and one end is connected with the inner ring wing; the outer ring wing is arranged on the circumference of the outer ring circle, and one end is connected with the outer ring arm. According to the utility model, through the innovative inner and outer ring structure and the windmill-shaped design, high-efficiency double-frequency radiation characteristics can be provided while miniaturization is realized, and the requirements of a 5G communication system on multi-frequency-band, miniaturization and high-efficiency transmission are met.