49results about "Stripline fed arrays" patented technology

A radio frequency antenna arrangement comprising an array of radiating elements, such as radiating antenna patches, which are co-located in a circuit, such as a microstrip circuit, with feeder elements which couple electromagnetic radiation to the radiating elements. The antenna arrangement has an electrically conductive backplate located behind the circuit, which acts as a groundplane and which is separated from the circuit by a dielectric layer. To reduce electromagnetic interference from the feeder elements which could disrupt the antenna pattern an electrically conductive screen is located directly in front of the feeder elements of the circuit but selectively exposes the array of radiating elements. The screen is spaced from the feeder elements and is not electrically connected to the backplate so that the screen, feeder elements and backplate do not form a triplate structure.

An antenna radiator is provided. The radiator includes four elements, each including a node, a first ring connected to the node, and a second ring connected to the node and disposed inside of and coplanar with the first ring. The first ring includes a first plurality of segments, and the second ring includes a second plurality of segments.

Described are a notch antenna and an array antenna based on a low profile stripline feed. The notch antenna includes a planar dielectric substrate having upper and lower surfaces. Each surface has a conductive layer with an opening therein. A notch antenna element is disposed on the conductive layer of the upper surface at the opening. A stripline embedded in the planar dielectric substrate extends under the notch antenna element. The stripline is adapted to couple an RF signal between the stripline and the notch antenna element. A conductive via is electrically coupled to the stripline and extends from the stripline to the opening in the conductive layer on the lower surface so that the RF signal is accessible at the lower surface.

Described herein are an apparatus, system, and method having a compact symmetrical transition structure for RF applications. The apparatus comprises: first and second ground planes each of which having respective truncated edges, the first and second ground planes being parallel to one another and separated by a multi-layer substrate; a strip line positioned between the first and second ground planes; and a symmetrical transition structure, coupled to the strip line and the first and second ground planes near their respective truncated edges, and further coupled to a broadside coupled line (BCL).

A near-field radio frequency identification (RFID) reader antenna includes: a plurality of pairs of slots being formed on a ground surface of a single dielectric layer to emit a field; and a micro-strip line being formed on another surface of the single dielectric layer and having an open end to feed the plurality of pairs of slots.

The antenna, comprising stacked grounded metal plates with openings (1, 2, 3) and antenna layers (4, 5) with feed lines (4B, 5B), situated between grounded metal plates. The openings in the grounded metal plates are arranged as matrix of columns and rows. The ends of the feed lines (4D, 5D) are aligned with the plate's openings (1A) in order to form radiating elements. The plate (7) is placed below the bottom grounded plate (3). The three-plate stack is arranged as two antenna packages (Ap1 and Ap2). These packages include also a layer (8) comprising active devises for initial amplification of the received signal, which are connected to the groups of radiating elements (4D, 5D, 1A) through coaxial transitions (13). As well as a combiner block (9) is connected to the active layer (8). The antenna layers (4,5) are arranged in subarrays and the antenna output is connected by a transition (12) to a standard twin Low Noise Block.

A slot-coupled microstrip antenna includes a first substrate, a second substrate, and a support base. The first substrate having a first surface and a second surface, in which a ground surface that is formed on the first surface, and a plurality of slots are formed on the ground surface. A feeding network is formed on the second surface. A plurality of antenna corresponding to the slots are formed on the second substrate disposed above the first surface. The support base having two fillisters at two side of the support base. The design of slot structure often has adverse influence on cross polarization and a front-to-back ratio of antenna radiation. The support base having two fillisters of the slot-coupled microstrip antenna can effectively inhibit the influence on the cross polarization and raise the front-to-back ratio from the slots.

An antenna device includes: a cavity part 1 composed of a metal conductor having an opening closed in a bottom; a first excitation circuit 10 superposed and disposed on the upper surface of the cavity part 1, and including inside thereof a first power feeding probe 13 and a first transmission line 14 that feeds electric power to the first power feeding probe 13, and radiating a radio wave of a first polarized wave; and a second cavity part 30 and a third cavity part 50 superposed and disposed on the upper surface of the first excitation circuit 10, and composed of a metal conductor having open holes, and further includes, above the first excitation circuit 10, a matching element 45 composed of a conductor.

An antenna device includes an antenna element including a dielectric substrate including a first surface and a second surface surfaces, a built-in feed line formed on the first surface, and a radiating element formed on the second surface and along the built-in feed line, a triplate line including a first outer conductor and a second outer conductor parallel to each other, and a central conductor arranged therebetween, a connecting portion at one end of the dielectric substrate to electrically connect the built-in feed line to the central conductor, a first hole and a second hole formed in the first outer conductor and in communication with each other. The first hole includes an opposite surface to the built-in feed line on the connecting portion with a specified space therebetween. The connecting portion is inserted in the second hole. The second hole includes an opposite regulating surface to the first surface of the connecting portion of the dielectric substrate.

There is provided a wideband patch antenna and an antenna array. The antenna includes a dielectric substrate of a rectangle shape, a radiation patch formed on a top surface of the dielectric substrate, a coupling patch formed on the top surface of the dielectric substrate and extending from a side of the dielectric substrate to a position from the radiation patch by a distance, a metal support arranged on the lower surface of the dielectric substrate and extending from the edge of the lower surface of the dielectric substrate downward to the ground, a layer of air having a predetermined thickness being formed between the lower surface of the dielectric substrate and the ground. According to the embodiments, it is possible to improve the directivity of the wideband microstrip antenna while maintaining its small size.

The invention discloses a miniaturized Ku full-band satellite antenna array. The antenna array comprises an antenna body and a feed structure for feeding the antenna body; the antenna body is formed by arranging a plurality of antenna units; each antenna unit comprises an upper dielectric plate, a middle dielectric plate and a lower dielectric plate which are stacked from top to bottom; a radiation patch is printed on the upper surface of the upper dielectric plate; a grounding reflection plate is printed on the lower surface of the lower dielectric plate; a grounding plate is printed on the upper surface of the middle dielectric plate; two horizontal polarization feed microstrip lines with opposite feed directions and two vertical polarization feed microstrip lines with the same feed direction are printed on the lower surface of the middle dielectric plate; a vertical rectangular gap is formed in a position, perpendicular to the end part of each horizontal polarization feed microstripline, of the grounding plate; a horizontal rectangular gap is formed in a position, perpendicular to the end part of each vertical polarization feed microstrip line, of the grounding plate; the two horizontal polarization feed microstrip lines are connected through a horizontal polarization coaxial probe; the two vertical polarization feed microstrip lines are connected through a vertical polarization coaxial probe; and both the horizontal polarization coaxial probe and the vertical polarization coaxial probe are connected with the feed structure. Narrow antenna width and high gain can be obtained.

The embodiment of the invention provides a feed system, an array antenna, and a base station, and relates to the technical field of mobile communication. The phase-shifting feed system is simple in structure. The feed system is located on the back face of a metal plate and comprises a plurality of first feed cavities and a plurality of first feed strip lines suspended in the first feed cavities. Each first feed strip line in the plurality of first feed strip lines comprises a plurality of output ports, and the plurality of first feed cavities and the grounding layer of the metal plate share ametal surface; the metal surface is provided with a plurality of openings corresponding to the plurality of first radiation units on the front surface of the metal plate. The plurality of output portsof each first feed strip line are connected with the plurality of first radiation units one by one through the plurality of openings, and the plurality of first feed strip lines are used for providing transmission signals for the plurality of first radiation units.

Method for constructing a dipole radio frequency antenna includes depositing on a dielectric substrate at least one layer each of a conductive material, a dielectric material, and a sacrificial material. The deposit of conductive material is controlled to form a transmission line, antenna radiating element and associated antenna feed. The transmission line includes a shield formed of one or more walls and a center conductor disposed coaxially within the shield. An antenna feed portion is electrically connected to the center conductor and extends through a feed port on the transmission line to connect with an antenna radiating element. The radiating element has an elongated form which extends a first predetermined length transverse to an axis of the transmission line. The method also includes dissolving at least one layer of the sacrificial material to form a clearance space between the surface of the dielectric substrate and the antenna radiating element.

A cellular base station antenna having improves squint performance is provided. The antenna includes a ground plane, a first plurality of radiating elements supported over the ground plane by microstrip support PCBs, and a second plurality of radiating elements supported over the ground plane by stripline support PCBs. The first and second pluralities of radiating elements are arranged in at least one array of low band radiating elements, and the quantities of first and second pluralities of radiating elements are selected to reduce squint of a beam produced by the at least one array. The first plurality of radiating elements may be located below the second plurality of radiating elements in the array. The array may be arranged in a linear column or a staggered column. In one example, the first plurality of radiating elements comprises four radiating elements and the second plurality radiating elements comprises two radiating elements.

A modular phased-array antenna including a beam-forming network module, a patch array module, and a matching network module interconnecting the beam-forming network module and the patch array module. The beam- forming network includes suspended stripline passive hybrid and crossover elements configured in a Butler Matrix formation interconnected with transceiver antenna patches via the matching network module which in turn comprises suspended stripline phased-matched tracks and a plurality of oppositely polarised matching elements.

An antenna device includes an input/output portion for a high frequency signal to be input or output, a distributing portion for distributing the high frequency signal input to the input/output portion into a plurality of high frequency signals, a phase shifting portion for imparting the plurality of high frequency signals with a predetermined amount of phase shift, and a feeding portion for feeding a plurality of antenna elements with the plurality of high frequency signals imparted with the predetermined amount of phase shift to cause the plurality of antenna elements to radiate the plurality of high frequency signals. The feeding portion is configured as a triplate line with a center conductor placed between one pair of parallel plate shaped outer conductors.

A multifunction electronics member combining structural and electronics functions includes in one embodiment an elongate longitudinally-extending structural body capable of supporting a structural load and having at least one metal surface defining a first circuit base, a first electrical circuit supported by the first circuit base, and a first cover having at least one metal surface facing the electrical circuit. The circuit preferably is embedded between the first circuit base and cover to form an electrically-active, or in some embodiments passive, structural member. In one embodiment, the electrical circuit may be a circuit board including a dielectric substrate and metallic electrical conductor supported by the substrate. In one embodiment, the circuit base, circuit, and cover define a stripline. In one embodiment, the structural body includes a stiffening projection. The structural body may be made entirely of metal in some embodiments.

The invention discloses a dual-polarized broadband antenna array with a high-isolation suspended microstrip line for balanced feeding. The antenna array mainly comprises an antenna body and a feed network for feeding the antenna body, the antenna body is formed by arranging a plurality of antenna units. The antenna unit comprises an upper dielectric plate, a middle dielectric plate, a lower dielectric plate, a first polarization coaxial probe and a second polarization coaxial probe. A radiation patch is printed on the upper surface of the upper dielectric plate and is connected with the firstpolarization coaxial probe and the second polarization coaxial probe, and a grounding reflection plate is printed on the lower surface of the lower dielectric plate. Compared with the prior art, the dual-polarized broadband antenna array has the advantages of high isolation, the high gain and the wide impedance bandwidth.