Abstract: An improved broadband omnidirectional antenna is distinguished by the following features: the omnidirectional antenna is in the form of a dual-polarized antenna, the dual-polarized antenna comprises a horizontally polarized radiating element (3) in addition to the vertically polarized radiating element (1; 1a, 1b) which is in the form of a monopole, the horizontally polarized radiating element (3) comprises slots (43, 43?) which are provided offset in the circumferential direction in the casing (11a) of the vertically polarized radiating element (1; 1a, 1b) which is in the form of a monopole, a feed device (111) for the horizontally polarized radiating element (3) being provided in the interior (11d) of the vertically polarized radiating element (1; 1a, 1b) which is in the form of a monopole, and the feed device (111) comprises separate feed devices (111a) for a plurality of slots (43, 43?), the respectively associated slots (43, 43?) being separately excited by means of said feed devices.

Abstract: An antenna element for fabricating into a linear or planar array includes a tapered slot along a main axis of the antenna element body that extends from a first slot end, defined by an outwardly flared opening at a second end of the antenna element, into a second meandering portion that is offset from the main axis, and then into a second slot end having a bend with respect to the main axis, and finally into a slot-line cavity proximate to the first end of the antenna element body. A feed port extends into the antenna element body from the outer surface of the first end of the antenna element body into the second slot end bend adjacent the slot-line cavity.

Abstract: An antenna apparatus for a printed circuit board including an auxiliary antenna which includes a printed circuit board and mounting components. An antenna pattern is formed on the printed circuit board, and the antenna apparatus includes a first auxiliary antenna unit formed on an upper surface of the printed circuit board; and a second auxiliary antenna unit provided at a location on a lower surface of the printed circuit board that corresponds to location of the first auxiliary antenna unit on the upper surface of the printed circuit board. Efficiency by the antenna apparatus according to the present invention can be increased by approximately 17%.

Abstract: Methods and apparatus for a coincident phase center dual polarized slotline radiator. In one embodiment, a radiator includes, for each of two polarizations in a unit cell: first and second fins to provide an air transition for a signal, the radiator including a throat region between the first and second fins, a microstrip path transitioning to a slotline feed, a slotline split forming a part of the slotline feed to provide signal power division and 180 degree phase shift for rejoinder in the throat of the radiator to launch the signal into free space. In another embodiment, a four port radiator is provided.

Abstract: A single sheet phased array includes a flexible dielectric substrate having a first surface and an oppositely facing second surface, and a first conductive layer on the first surface and a second conductive layer on the second surface. The flexible dielectric substrate, the first conductive layer and the second conductive layer are patterned to form at least one feed network and a plurality of radiators directly coupled to the at least one feed network. Further, the plurality of radiators are pivotable with respect to the flexible dielectric substrate to be positioned in a direction away from the first surface or the second surface of the flexible dielectric substrate when the single sheet phased array is deployed.

Abstract: An antenna for transmitting and/or receiving-electromagnetic waves has a flat ground plane, and an array of radiating and/or receiving elements. The radiating and/or receiving element comprises a planar conductor which is arranged in parallel to the ground plane. An L-shaped slot is arranged in the planar conductor.

Abstract: A slotted bifilar or quadrifilar helix antenna has a plurality of helical antenna elements. The antenna elements have an outer planar surface. A slot element is secured to an interior of the outer planar surface. The slot element extends radially inwardly to a slot element edge. At least two radially opposite slot element edges define a tapered slot. At a shorted point on the antenna, at least one radially opposite pair of slot elements are electrically shorted together. A feed point is axially offset from the shorted point along the antenna axis.

Abstract: To meet the requirements including dual-band, a high gain, and a broadside radiation formation, a dual band planar micro-strip antenna utilizing antenna array is provided. One array element includes a rectangle-shaped micro-strip antenna and an arrow-shaped micro-strip antenna. A first resonant frequency is determined by a length of the rectangle-shaped micro-strip antenna. Slots are dug for satisfying a second resonance frequency. Curved surfaces of the arrow-shaped micro-strip antenna designed according to an ellipse equation so that a frequency resonance is reached under both the first resonant frequency and a second resonant frequency, and a broadside radiation formation is thus generated. A T-shaped jointer distributes power between antenna elements according to the output impedances of the antenna elements. An L-shaped band-stop filter located on the T-shaped jointer is utilized to suppress frequency resonance resulted from multiples of the first resonant frequency.

Abstract: An antenna assembly for a wireless communication device includes a substrate of dielectric material that has opposing first and second surfaces. A ground plane formed by a layer of electrically conductive material on the first surface. An antenna with a physical length is disposed on the substrate. At least one metal-dielectric structure is disposed on the substrate. The metal-dielectric structures resonate so as to interact with the antenna and thereby alter the effective electrical length of the antenna. That interaction causes the antenna to function as though it had a greater physical length. In one embodiment, that interaction enables an antenna, that is shorter than one-fourth the wavelength of a radio frequency signal applied thereto, to function as through the physical length of the antenna was one-fourth that wavelength.

Abstract: An implantable medical device may include a case which houses components of the implantable medical device. The implantable medical device may include an inductive coil coupled to a rechargeable battery. The inductive coil may be operative to inductively couple to an external coil and to transfer energy from the external coil to the rechargeable battery to recharge the rechargeable battery. The implantable medical device may include a cutout formed in the case of the implantable medical device and filled with a dielectric material. The cutout may be operative to reduce eddy currents in the case during recharge of the rechargeable battery. The implantable medical device may include a slot antenna disposed within the case. The slot antenna may be operative to communicate with an external device through the cutout in the case.

Abstract: The present invention relates to a multiple-port dual-band antenna system and the associated interface formed by DPDT or SPDT switches, that can be integrated on one and the same multi-layer structure.

Abstract: A plasma generation antenna and a plasma processing apparatus can supply a gas and an electromagnetic wave effectively. A plasma processing apparatus 10 includes a processing chamber 100 in which a plasma process is performed; a wavelength shortening plate 480 configured to transmit an electromagnetic wave; and a plasma generation antenna 200 having a shower head 210 provided adjacent to the wavelength shortening plate 480. The shower head 210 is made of a conductor, and has a multiple number of gas holes 215 and a multiple number of slots 220 through which the electromagnetic wave passes. The slots 220 are provided at positions isolated from the gas holes 215.

Abstract: A circuit for communicating information in a wireless network includes a filtering circuit in communication with a zero intermediate frequency (ZIF) transceiver circuit. The filtering circuit includes a first mixer in communication with an output of the ZIF transceiver circuit. The filtering circuit includes a first Surface Acoustic Wave (SAW) filter circuit in communication with an output of the first mixer. The filtering circuit includes a second mixer in communication with an output of the first SAW filter circuit. The filtering circuit includes a third mixer, and a second SAW filter circuit in communication with an output of the third mixer. The filtering circuit includes a fourth mixer in communication with an output of the second SAW filter circuit and an input of the ZIF transceiver circuit. The filtering circuit also includes a local oscillator circuit in communication with the first, second, third and fourth mixers.

Abstract: A mobile wireless communication device may include a multiple-band antenna on an antenna carrier and connected to a wireless transceiver. The multiple-band antenna may include an elongate base conductor having opposing first and second ends and opposing first and second sides extending between the first and second ends. The elongate base conductor may have a first L-shaped slot with a proximal end opening outwardly at the first side of the elongate base conductor adjacent the first end thereof and having a distal end adjacent a medial portion of the elongate base conductor. The elongate base conductor may have a second L-shaped slot with a proximal end opening outwardly at the first side of the elongate base conductor adjacent the medial portion thereof and having a distal end adjacent the second end of the elongate base conductor. The distal end of the second L-shaped slot may extend closer to the second end of the elongate base conductor than the distal end of the first L-shaped slot.

Abstract: A slot antenna located on a substrate with a first surface and a second surface opposite to the first surface includes a feeding portion and a radiating portion. The feeding portion is located on the first surface of the substrate to feed electromagnetic signals. The radiating portion is located on the second surface of the substrate and defines a sector-shaped slot, a first rectangle-shaped slot, a second rectangle-shaped slot, and a third rectangle-shaped slot, wherein the sector-shaped slot is defined by a first semidiameter, a second semidiameter, and an arc connected one by one.

Abstract: Techniques involving a slot antenna and associated functionality are described. In one or more implementations, the techniques describe a slot antenna that is usable for wireless communication in a mobile communication device. The mobile communication device may include one or more modules communicatively coupled to the slot antenna and configured to employ the slot antenna to enable the wireless communication.

Abstract: A slot antenna is formed on a base. The base includes a first surface and an opposite second surface. The slot antenna includes a feeding portion formed on the first surface, a ground portion and a radiating portion formed on the second surface. The radiating portion includes a first radiating body being surrounded by a first slot, a second radiating body being surrounded by a second slot, a first switch and a second switch. The first switch is set between the first radiating body and the ground portion. The second switch is set between the second radiating body and the ground portion.

Abstract: An improved antenna array (100) comprises a set of array elements (102 a-p) electromagnetically coupled to a transmission line. The transmission line comprises a live conductor (122) and a return conductor, and the live conductor (122) is terminated by a direct connection to the return conductor. An input signal fed to the live conductor (122) is radiated by the array elements (102 a-p) and the antenna array (100) is arranged such that any portion of the input signal reaching the termination is reflected at the termination so as to form a reflected signal that superimposes with the input signal to produce a predetermined farfield radiation pattern.

Abstract: An omnidirectional RF radiator element formed upon a surface of a planar dielectric substrate. The element features a plurality of cavities narrowing in cross-section and formed upon a surface of said planar substrate which narrow from a widest point to a narrowest point. Feed lines communicate with each cavity for transmission and reception of RF therethrough. Each radiator element is engageable with other elements in a stacked configuration using connectors engaged to the feed lines and configured for cooperative engagement with other connectors.

Abstract: A multiband monopole slot antenna includes a ground plane, a dielectric substrate, a radiating portion, and a microstrip feedline. The dielectric substrate is connected to an edge of the ground plane and extends toward the opposite direction of the ground plane. The radiating portion is on the metal surface of the dielectric substrate and includes a first monopole slot, a second monopole slot and a third monopole slot. The microstrip feedline is on the surface opposite to the metal surface of the dielectric substrate. A first end of the microstrip feedline is connected to a signal source, and a second end of the microstrip feedline is an open end. The microstrip feedline passes over the first, second, and third monopole slots. A section of the microstrip feedline which passes over the third monopole slot is parallel to the third monopole slot, and the microstrip feedline is generally of a step shape.

Abstract: The present invention is directed to a dielectric radiating element. The dielectric element may include a ground plane connected to a dielectric superstrate. The dielectric superstrate includes multiple dipole layers which include metamaterials and dipoles. The ground plane is configured with a horizontal polarization slot and a plurality of vertical polarization slots. The ground plane is further configured for receiving electrical signals from a power transmission assembly and radiating electromagnetic waves via the polarization slots based upon the received electrical signals. The electromagnetic waves may be transmitted or radiated from the ground plane, may pass through the dielectric superstrate and may then be radiated from the dielectric radiating element. The dielectric radiating element is a dual-polarized radiating element configured with coincident phase centers.

Abstract: Disclosed herein are various exemplary embodiments of omnidirectional multi-band antennas. In an exemplary embodiment, an antenna includes upper and lower portions. The upper portion includes one or more radiating elements, one or more tapering features for impedance matching, and one or more slots configured to enable multi-band operation of the antenna. The lower portion includes one or more radiating elements and one or more slots.

Abstract: The present invention relates to a dual polarized array antenna comprising at least two dual polarized antenna elements being arranged for radiating electromagnetic energy having a first polarization, constituting a first antenna radiation pattern, via a connection to a first antenna port, and electromagnetic energy having a second polarization, constituting a second antenna radiation pattern, via a connection to a second antenna port, the second polarization being orthogonal to the first polarization, the first antenna radiation pattern and second antenna radiation pattern each having a main beam and a number of side-lobes with nulls.

Abstract: A mobile wireless terminal is provided which has an antenna constitution that does not have deterioration on a wireless function regardless of when a clamshell type chassis is opened or closed. In such a mobile wireless terminal, a first antenna element is set on a side of a inside surface of a display chassis, and a second antenna element is set on a side of an external surface. A first/second conductive board is arranged so as to face the first/second antenna element. When a display chassis and a main body chassis are in an opened state, both the first and second antennas work which are arranged in the display chassis. When a display chassis and a main body chassis are in a closed state, the second conductive board affects on the second antenna element so as to avoid effects of a metal of the main body chassis, and the second antenna element works without being affected from the metal of the main body chassis.

Abstract: It is an object to form a high-quality crystalline semiconductor layer directly over a large-sized substrate with high productivity without reducing the deposition rate and to provide a photoelectric conversion device in which the crystalline semiconductor layer is used as a photoelectric conversion layer. A photoelectric conversion layer formed of a semi-amorphous semiconductor is formed over a substrate as follows: a reaction gas is introduced into a treatment chamber where the substrate is placed; and a microwave is introduced into the treatment chamber through a slit provided for a waveguide that is disposed in approximately parallel to and opposed to the substrate, thereby generating plasma. By forming a photoelectric conversion layer using such a semi-amorphous semiconductor, a rate of deterioration in characteristics by light deterioration is decreased from one-fifth to one-tenth, and thus a photoelectric conversion device that has almost no problems for practical use can be obtained.

Abstract: A three-fold polarization diversity antenna comprises a slot-loaded patch, and a radiation member that is electromagnetically coupled to the slot-loaded patch. The radiation member extends through a plane of the slot-loaded patch.

Abstract: The present invention relates to a system of multi-beam antennas comprising M radiating sources and P networks of N radiating elements, P being greater than 1 and N being an even whole number, the network elements being connected two by two via transmission lines of the same electrical length. In addition, the P networks are co-located at the centre of each network, the M radiating sources are each positioned at a distance Li from said centre, the distance Li being strictly less than the distance of the field called the far field and i varying from 1 to M. This system can be used with MIMO type devices.

Abstract: An antenna structure comprises a substrate, a first antenna unit and a second antenna unit. The substrate comprises a first surface and a second surface opposing the first surface. The first antenna unit is disposed on the first surface, and comprises at least a first slot with a wider inside and narrower outside at the edge of the first antenna unit. The second antenna unit is disposed on the second surface, and is connected to the first antenna unit through a hole in the substrate. The radius of the at least one first slot is one-fourth the wavelength of the central frequency of the antenna structure.

Abstract: An antenna that is capable of accommodating both IEEE 802.11b/g traffic and IEEE 802.11n traffic is provided. The antenna includes a ground plane member, a plurality of inverted F slot antenna elements disposed at equidistant positions along a periphery of the ground plane member, and a plurality of slot elements disposed at equidistant positions along the periphery of the ground plane member is provided. First and second slot elements can be disposed on respective first and second sides of each inverted F slot antenna element, and each inverted F slot antenna element can operate in a first frequency band and in a second frequency band.

Abstract: In one embodiment, a slot array antenna comprising a quartz layer and a silicon layer, wherein the quartz and silicon layers are matched to suppress microwave modes, and a metal layer adjacent to the silicon layer comprising offset cuts.

Abstract: A system for stabilizing an electronic array includes at least one component having a notch and at least one stabilizing bar. The stabilizing bar comprises a first pair of contact points. The at least one stabilizing bar is positioned upon the at least one component such that the first pair of points deform against the at least one component below the notch.

Abstract: A CPW fed planar log-periodic antenna is provided. The antenna includes: an upper substrate; a planar log-periodic antenna structure formed beneath the upper substrate; a CPW-fed structure formed on the upper substrate for feeding energy into the planar log-periodic antenna structure; a lower substrate disposed beneath the upper substrate; and a wire structure formed beneath the lower substrate. The antenna of the present invention features efficient reduction of cross polarized radiation and thereby enhancing the performance.

Abstract: A slotted waveguide antenna stiffened structure for an aircraft having an aircraft skin. The slotted waveguide antenna stiffening structure including a structural stiffening element reinforcing the aircraft skin; the structural element connected to a radio frequency feed source, the source providing energy with electromagnetic bandwidth to a slotted waveguide antenna having a plurality of slots. The antenna conformal to the aircraft skin and the structural stiffening element, the structural stiffening elements functioning as waveguides for the electromagnetic bandwidth. The slots may include a slot sealant enclosing the plurality of slots.

Abstract: An antenna system includes plural antennas. Each antenna is different than every other antenna. Each antenna is characterized by a principal plane. A principal plane of a first antenna is oblique to a principal plane of a second antenna. The first antenna includes a first insulating substrate extending in the principal plane of the first antenna. The first antenna further includes a first radiating element and a connected first conductor and includes a second radiating element and a connected second conductor. The first antenna further includes a coupling conductor coupling the second radiating element and the first conductor. The first antenna further includes a first coupler having a first signal conductor and a second signal conductor. The first signal conductor is coupled to the second conductor, and the second signal conductor is coupled to the first radiating element.

Abstract: A microstrip-fed antenna is disclosed having a first dielectric substrate and a second dielectric substrate. The second dielectric substrate is disposed on the first dielectric substrate and the first dielectric substrate has a relative permittivity greater than or equal to the second dielectric substrate. The antenna further includes a microstrip line formed in the second dielectric substrate and a metal layer formed in the second dielectric substrate. The metal layer is positioned between the microstrip line and the first dielectric substrate and includes a slot.

Abstract: An antenna and method of forming an antenna from first and second planar substrates having antenna elements engaged thereto adapted to transmit and/or receive a desired RF frequency. Notches in some of the substrates engage traversing substrates to form an array with horizontally and vertically disposed antenna elements all in an electrical communication with electrical pathways on the rear surface of one or both of the first and second planar surfaces.

Abstract: The present invention discloses a planar antenna including a substrate, a ground plane and a feed line. The ground plane is disposed on one side of the substrate. The ground plane includes a hollow portion. The feed line disposed on another side of the substrate and corresponding to the hollow portion for feeding a signal. The present invention also discloses a planar antenna including a substrate, a ground plane and a feed line. The ground plane is disposed on one side of the substrate. The ground plane includes a first hollow portion and a second hollow portion. The feed line is disposed on another side of the substrate and having a first branch feed portion and a second branch feed portion for feeding a signal, and the first branch feed portion and the second branch feed portion are aligned with the first hollow portion and the second hollow portion respectively.

Abstract: The present invention is a multi-element anti-jamming (A/J) antenna array. The antenna array includes a first multi-band GPS edge-slot antenna and a second multi-band GPS edge-slot antenna. The first edge-slot antenna and the second edge-slot antenna are configured for implementation within at least one of an artillery shell and a munition. The first edge-slot antenna and the second edge-slot antenna are each further configured for supporting L-band frequencies.

Abstract: A phased array antenna device is described. The phased array antenna device includes at least one one-dimensional phased array of radiating elements arranged along an array direction, a lens, and a phase control element. The lens is arranged such that divergent beams from the radiating elements are collimated by the lens in a direction orthogonal to the array direction to produce a beam. The phase control element is configured to apply a linear phase gradient to the radiating elements thereby providing one-dimensional electronic beam steering for the antenna device. The antenna device may additionally include one or two mechanical positioners to mechanically move the at least one one-dimensional phased array in directions orthogonal to the array direction, where the phased array enables scanning along the array direction.

Abstract: A planar antenna including slot arrays configured to set a narrow interval between elements so as to perform beam scanning in a wide angle range while keeping low loss and low profile. The planar antenna includes: a coaxial line including an inner conductor, an outer conductor provided so as to surround a circumference of the inner conductor, and both ends short-circuited; a feeding mechanism for exciting the coaxial line; and a plurality of slots formed on the outer conductor with a certain angle with respect to a tube direction of the coaxial line and having approximately a resonance length.

Abstract: An antenna is formed by a conductive metal layer disposed on a substrate, and includes a radiating portion and a feeding portion. The radiating portion defines a first rectangle slot, a second rectangle slot parallel to the first rectangle slot, a first stripe slot perpendicularly communicating with the first rectangle slot, a second stripe slot perpendicularly communicating with the second rectangle slot and in parallel to the first stripe slot, and a plurality of spiral slots communicating with the first and second rectangle slots, respectively. The feeding portion is formed by the conductive metal layer located between the first stripe slot and the second stripe slot to feeding electromagnetic signals.

Abstract: An antenna 1 includes: a plate-like base 3 made of an insulating material; and a conductor 5 in a predetermined shape, which has multiple cut-out portions 10, 13, 15 and which is provided at a predetermined position of the base 3 to obtain predetermined antenna characteristics. The antenna 1 is configured so that the antenna characteristics can be mostly maintained even when the base 3 is deformed into a predetermined curved-surface shape.

Abstract: A ground conductor is formed by a conductor pattern placed to a surface of a dielectric substrate, and includes a first and a second opening. A transmission line is formed over the dielectric substrate by the conductor pattern. The transmission line supplies a signal to a first and a second peripheral conductor respectively surrounding the first and the second opening. The first and second opening are arranged axis-symmetrically with respect to the transmission line. Opening areas of the first and the second opening are determined so that, due to loop currents supplied by the transmission line flowing through the first and the second peripheral conductor, a region including the first opening and the first peripheral conductor operates as a magnetic field radiation first loop radiating element, and a region including the second opening and the second peripheral conductor operates as a magnetic field radiation second loop radiating element.

Abstract: The present invention relates to a method of production of an antenna pattern having a predetermined general outline, with an ink jet printer, laser activation device or similar device. The device creates the antenna pattern with a plurality of empty inner portions within the general outline.

Abstract: A system for dynamically reconfiguring the radiation pattern of a collection of slot antennas. A collection of slot antennas of various lengths and widths are fabricated. The control system independently drives the feed to one or more slot antennas to produce the desired radiation pattern. The control system activates and deactivates the feed to different slot antennas, thus dynamically reconfiguring the generated radiation pattern.

Abstract: An antenna system for a weather radar system includes a first transceiver and a second transceiver. The polarization of the first transceiver is orthogonal to the polarization of the second transceiver. The first transceiver and the second transceiver are interlaced to occupy the same volume.

Abstract: A MIMO antenna apparatus is provided with: an upper housing having slits; first feed points through which the upper housing itself is excited as first antennas; second feed points through which the slits are excited as second antennas; switch, each of which is connected to one of the first feed points and one of the second feed points, and connects one of the two feed points to an A/D converter circuit-; a signal level detector circuit detecting signal levels of received radio signals; and a controller that controls the switches to change a feed point connected to the A/D converter circuit, when the detected signal level is less than or equal to a predetermined threshold value. The slits are located between the first antennas.

Abstract: A three-dimensional integrated device includes at least two integrated circuit substrates laminated to each other, each of the integrated circuit substrates having at least one ground plane, at least one aperture provided at a desired location in the ground plane, the end of a microstrip line formed in a pair with the ground plane and placed in the aperture, and a transmitter and/or a receiver that is connected to the microstrip line and transmits and/or receives signals at a frequency substantially corresponding to the perimeter ? of the aperture. Each of the apertures in each of the integrated circuit substrates is superimposed on at least one of the apertures in the other integrated circuit substrates in the direction perpendicular to the ground planes, and the signals are transported in a contactless manner between the integrated circuit substrates through the apertures at a frequency substantially corresponding to the perimeter ? of the apertures.

Abstract: An antenna structure including at least two stacked antenna apertures, a first antenna aperture with first antenna elements and at least a second antenna aperture with second antenna elements. The antenna structure is arranged for operation in at least a high and a low frequency band. The first antenna elements are arranged for operation in the high frequency band and the second antenna elements for operation in the low frequency band. The first antenna elements are arranged to have a polarization substantially perpendicular to the polarization of the second antenna elements. The second antenna elements are arranged in at least one group and each of the group includes a number of second antenna elements coupled in series and arranged to have a common feeding point on a straight feeding structure. One feeding structure is located adjacent to each group of second antenna elements. The direction of the feeding structure is substantially perpendicular to the polarization of the first antenna elements.

Abstract: Methods and apparatus that provide grade-level RF transceivers for use in trans-grade wireless communication networks. The methods involve incorporating slot antennas into grade-level opening covers, such as manhole covers, to provide built-in antennas for transceivers that may be connected by transmission lines. The grade-level transceivers use coupling mechanisms to connect transceivers to the slot antennas by way of transmission feed lines. Multi-slot grade-level transceivers use switching mechanisms to switch between multiple slot antennas. Certain embodiments may also include adaptable RF circuitry. Trans-grade wireless communication networks use these grade-level transceivers to communicate between below-ground and above-ground portions of the network, which may be used in underground utility systems such as combined sewer systems.