91 results about "Patch antenna array" patented technology

A dual-polarized patch antenna, an dual-polarized patch antenna array, and a method for forming the same are provided. The dual-polarized patch antenna comprises a radome, a horizontal feed and a vertical feed, a first cross-shaped patch, and a ground plane including a cross aperture. The dual-polarized patch antenna may include a cross patch and a cross aperture to increase the isolation in a cross-polarization between a horizontal polarized signal and a vertical polarized signal in a first principle plane and to decrease a mismatch in co-polarizations between the horizontal polarized signal and the vertical polarized signal in a second principle plane.

On the ground plate uprightly mounted in the vertical direction, a plurality of short patch antennas are provided at mutually adjacent positions, and also a pair of non-powered elements are mounted, wherein each of the non-powered elements is disposed between the plurality of short patch antenna elements in such a manner as to extend in the vertical direction and is electrically insulated from the ground plate. Due to this construction, the radiation pattern in the horizontal direction of the plurality of short patch antennas can be greatly improved.

The present invention discloses a three-dimensional integrated packaging based on a millimeter wave antenna and a silicon-based multi-channel component. The packaging comprises a radiation layer, wherein the radiation layer is a micro-strip patch antenna array; a high resistivity silicon substrate with a TSV feeding structure; a dielectric wiring layer with microwave wirings and digital wirings; asurrounding frame with a TSV three-dimensional vertical transmission structure and an air-tightness packaging cover plate with a TSV transmission structure. According to the packaging, by integratingthe micro-strip patch antenna array, microwave chip(s), digital chip(s) and passive device(s) in a same module via a MEMS process at the same time, the middle part of the surrounding frame has the TSV structure capable of realizing vertical transmission of microwave signal(s), so that integration degree is relative high, the microwave properties are good, the multi-functionalization and the miniaturization of the components can be realized.

A feed network for, and method of feeding, an array of antenna elements has multiple feed points. Two feed lines extend from the feed points, one having a longer length that the other to provide a phase difference in the two feed lines. The feed lines split into main feed lines, which in turn split into secondary feed lines that connect to the antenna elements. The connections to the elements fed from one of the feed lines are rotated with respect to the connections to the elements fed from the other to provide another phase difference between the elements. The antenna elements may be fed from the longer of the feed lines from one of the feed points and the shorter of the feed lines from an adjacent feed point, with the connections from the feed points providing for right hand and left hand circular polarized elements, respectively.

An asset tracking system includes one or more RFID readers and one or more RFID tags cooperating with the readers, and at least one garment, wherein the readers each include an RF wideband transceiver and a linearly polarized antenna. Each reader polls periodically a corresponding one or more RFID tag to determine a distance of a particular tag from each reader. Each reader computes the tag's distance in real-time and updates a corresponding database in real-time for an on-demand reaction as determined by a processor in each reader. Each tag includes a wideband transceiver and an antenna array. The antenna array is implanted on each garment and ensures a spherical coverage around each tag. The antenna array includes two or more patch antenna distributed around each garment so as to provide full 360 degree and spherical coverage around each garment, and wherein each patch antenna is provided on a dielectric. Coverage is thereby provided by the patch antenna array and removes the need of having a single line of sight. Each tag may include an on-board processor adapted to adaptively switch between the antennas in the antenna array so as to select an appropriate antenna of the array for a signal from a corresponding reader.

An embodiment of the present invention provides an apparatus, comprising an array of patch antennas and a switch/phase shifter network capable of combining the patch antennas in a selected sequential group and wherein by stepping the group throughout the patch antennas, a plurality of main beam positions can be created with at least one of the main beam positions capable of being active with the remaining main beam positions idle, and wherein by sampling energy from the remaining idle antenna elements, a second beam is formed that is capable of creating a null signal in the direction of the second beam. In an embodiment of the present invention, the array of patch antennas may be a circular array and the stepping the group around the array is stepping the group around a circumference of the circular array of patch antennas.

The invention discloses a broadband micro-strip antenna array coupling structure, and aims to provide a micro-strip patch antenna array, which is simple in structure, is conveniently and quickly debugged and can effectively reduce side-lobe levels of antennae. According to the technical scheme, a micro-strip patch antenna array body consists of a plurality of antenna radiation units longitudinally arranged on a dielectric support, wherein a coupling groove is formed below a radiation patch of each antenna radiation unit; the length of the coupling groove of each antenna radiation unit is progressively decreased from middle to two ends, so that a gradually variable coupling groove length aperture coupling form is achieved; the antenna radiation units with the coupling grooves which are equal in length are arranged in pairs on the array body; the lengths of the coupling grooves which are symmetrically formed in pairs from left to right are equal; the patch of each antenna radiation unit feeds through a unit feeder perpendicularly passing through the corresponding coupling groove. According to the broadband micro-strip antenna array coupling structure, the lengths of the coupling grooves are progressively decreased from middle to two ends, so that excitation current for the coupling of the feeders to the patches is changed, and the side-lobe levels of the antennae are reduced.

A series-fed E-shaped patch antenna array has co-polarized parasitic patches to improve aperture efficiency. Each of microstrip parasitic patches is inserted between a plurality of microstrip E-shaped patch antennas. The parasitic patches are co-polarized with the E-shaped patch antennas so that the current flows in the parasitic patches and the E-shaped patch antennas have the same polarity. Additional radiation from the co-polarized microstrip parasitic patches significantly improves gain flatness, gain and aperture efficiency due to offset resonance frequency.

The invention discloses a strain and crack decoupling measurement device and method based on a binary patch antenna array. The method comprises steps that S1, a compensation antenna and a measurementantenna are respectively attached to the surface of a to-be-tested structure; S2, frequency sweep electromagnetic waves are transmitted by a wireless inquirer device to the compensation antenna and the measurement antenna in real time, and the resonant frequency is respectively acquired according to reflected signals; S3, when a crack is generated on the surface of the to-be-tested structure, a ground floor of the compensation antenna isolates influence of the surface crack of the to-be-tested structure on the resonant frequency, only strain is sensed, and the comprehensive strain and crack information is sensed by the measurement antenna; according to the real-time resonant frequency of the compensation antenna and measurement antenna, in combination with length and the initial resonant frequency, strain and crack information decoupling are realized. The method is advantaged in that decoupling and accurate measurement of the surface strain and crack information of the metal structureare realized through utilizing the patch antenna, the device structure is simple, and lead connection is not needed.

The invention discloses a decoupling structure between adjacent rectangular patches in a double-frequency antenna array. The decoupling structure comprises a dielectric substrate, metal grounding plates arranged on the lower surface and the upper surface of the substrate respectively and two symmetrical double-frequency metal patches. Two feed probes are arranged on the metal grounding plate and penetrate through the dielectric substrate to be in contact with the two patches respectively; a decoupling branch unit and a short-circuit probe unit are arranged between the two patches, decoupling of space waves between the two patches is achieved, and a short-circuit probe is arranged on the metal grounding plate and penetrates through the dielectric substrate to make contact with the decoupling branch unit; U-shaped grooves are symmetrically etched in the two patches and used for activating the other mode; and a defected ground structure is etched on the metal grounding plate and is used for preventing current from flowing from one patch to the other patch. The patch antenna array has the advantages of being low in profile, low in manufacturing cost, simple in structure and the like, the original advantages that the decoupling structure is low in profile, easy to manufacture and the like are kept, the original radiation performance of the antenna is not damaged, and meanwhile a good decoupling effect is obtained.

A patch antenna array includes a plurality of patch antenna elements spaced apart from each other and arranged as an array. Each patch antenna element has a substrate, a radiating patch associated with the substrate and a ground plane associated with the substrate. The patch antenna elements are discrete and separate from each other. At least one element frame holds the discrete antenna elements in the array. Each element frame captures and positions at least two patch antenna elements relative to each other.

The invention belongs to the technical field of antennas, and provides an LTCC laminated wideband microstrip staggered triangle array antenna. The LTCC laminated wideband microstrip staggered triangle array antenna is used for overcoming the disadvantages of an existing microstrip patch antenna in the aspects of giving consideration to high gain, wide frequency band and miniaturization. The antenna comprises an upper radiation metal patch antenna array, a lower radiation metal patch antenna array, an upper dielectric substrate, a lower dielectric substrate, a welding hole, a feed network, a grounding metal layer and a coaxial connector probe, and is characterized in that the upper dielectric substrate, the lower dielectric substrate and the grounding metal layer are respectively in the shapes of rectangles with teeth; the upper metal patch antenna array and the lower metal patch antenna array are respectively composed of upper unit metal patches and lower unit metal patches in the arrangement of staggered triangles; and the upper unit metal patches and the lower unit metal patches are respectively in the shapes of rectangles provided with semi-U-shaped grooves. The LTCC laminated wideband microstrip staggered triangle array antenna provided by the invention can well give the consideration to the performance requirements of the microstrip patch antenna such as high gain, wide frequency band and miniaturization, and is relatively simple in structure.

The invention discloses a decoupling Fabry-Perot (FP) resonant cavity, which comprises a partial reflection surface and a reflective array, and is characterized in that a coaxial feed 1*2 patch antenna array is embedded into the reflection array for observing coupling characteristics. The partial reflection surface is composed of 7*10 units, wherein each unit is composed of an upper metal layer, adielectric substrate and a lower metal layer, the upper metal layer is provided with a rhombic groove, and the lower metal layer is a square patch. The reflective array is composed of an upper metallayer, a dielectric substrate and a lower metal ground plate. The 1*2 patch antenna array consists of two square patches with the same size and a feed probe, and is embedded into the reflective array.Through the FP resonant cavity, the antenna gain can be effectively improved while the coupling between the antennas is reduced, and meanwhile, the antenna profile is also reduced.

An antenna module (1) includes an antenna array (100) that includes a plurality of radiation conductors (11) arranged at regular intervals in or on a dielectric substrate (14) and an RFIC (20) that is provided in or on the dielectric substrate (14) and that performs signal processing on a transmission signal transmitted by the antenna array (100) or a reception signal received by the patch antenna array (100). Each of the plurality of radiation conductors (11) has a transmission feeding point from which the transmission signal is transmitted to the RFIC (20) and a reception feeding point at which the reception signal is received from the RFIC (20).