Abstract: A transmission line slot antenna is described. Although more generally applicable, the antenna is particularly adapted to conformal applications. The antenna has a ground plate with a conductive top surface having a slot with a feed whose ground reference terminal is connected to one side of the slot and whose signal terminal is connected to the other side of the slot. A conductive cylindrical screen, which can be of an arbitrary cross section and non-uniform in the longitudinal direction, is formed of one or more sections attached along the bottom surface of the ground plate, with each of the sections having a first and second edge conductively connected to the top surface of the ground plate along opposite sides of the slot. The antenna is tuned to support the fundamental mode (H00) of a slotted cylinder transmission line formed by the screen sections and a part of the ground plate with the slot.

Abstract: The invention provides a wireless chip which can secure the safety of consumers while being small in size, favorable in communication property, and inexpensive, and the invention also provides an application thereof. Further, the invention provides a wireless chip which can be recycled after being used for managing the manufacture, circulation, and retail. A wireless chip includes a layer including a semiconductor element, and an antenna. The antenna includes a first conductive layer, a second conductive layer, and a dielectric layer sandwiched between the first conductive layer and the second conductive layer, and has a spherical shape, an ovoid shape, an oval spherical shape like a go stone, an oval spherical shape like a rugby ball, or a disc shape, or has a cylindrical shape or a polygonal prism shape in which an outer edge portion thereof has a curved surface.

Abstract: Disclosed is a multiband antenna, comprising: an antenna element section which is fed from a feeding point; and a ground element section which is connected to a ground of the feeding point; wherein the antenna element section includes: a pole element which includes the feeding point, and has a length at which the pole element resonates at a first frequency; an L-shaped folded-back element which is connected to an end of the pole element, and resonates at a second frequency together with the pole element; and an L-shaped added element which is connected to the pole element; wherein a length from the feeding point to an end of the added element is a length at which the added element resonates at the first frequency.

Abstract: The invention relates to a handheld device comprising a first antenna (401, 701, 901, 931, 961, 1101, 1151, 1301, 1501) arranged to operate in at least a first frequency band, and a second antenna (402, 702, 902, 1102, 1302, 1502, 2210) arranged to operate in at least a second frequency band, wherein said second frequency band is different from said first frequency band. According to the invention, the second antenna comprises a slot antenna comprising at least one slot in at least one conductive layer. The invention also relates to enhancement of the isolation between first and second antennas in a handheld device.

Abstract: A broadband antenna includes a substrate having a first surface on which a first radiator arm, a second radiator arm, a first connecting conductor and a first grounding section are disposed, and a second surface on which a second connecting conductor and a second grounding section are disposed. The first connecting conductor has one end connected to a junction at which the first and second radiator arms are interconnected, and has another end connected to the first grounding section. The first connecting conductor has a feed-in point disposed thereon. The second connecting conductor has one end connected to the second grounding section. Moreover, at least a portion of the first connecting conductor overlaps with a projection of the second connecting conductor onto the first surface so that transmission directions of signals in the first and second connecting conductors are the same.

Abstract: There is provided a mobile telecommunication terminal comprising: a chip antenna, and a printed circuit board having the chip antenna mounted on one surface thereof, the printed circuit board comprising a tuning ground pattern formed on a surface opposing the one surface of the printed circuit board to have one end connected to a ground part so as to be used for tuning frequency characteristics of the chip antenna.

Abstract: A wireless device includes a ground plane with at least two portions. On each of the at least two portions at least one connecting means is provided. The two connecting means are connected with an electric component for connecting the at least two portions of the ground plane. The ground plane is partially covered with an insulating material and the connecting means are given by a part of the ground plane which is not covered by any insulating material.

Abstract: An antenna structure includes an expansion card connector, an antenna, and a plurality of metal pins. The antenna is disposed on the expansion card connector. The plurality of metal pins is disposed on the expansion card connector, whereof the plurality of metal pins includes a first designated pin to be a feeding point of the antenna. The plurality of metal pins further includes a plurality of second designated pins, whereof the plurality of second designated pins is electrically connected to each other to be a radiator of the antenna.

Abstract: Disclosed is an antenna apparatus, including: a multi-layer substrate having at least two substrates in a stacking manner and having a first through hole; an amplifying circuit on one face of the multi-layer substrate; a ground pattern formed between two adjacent substrates of the multi-layer substrate; an antenna pattern formed on the other face of the multi-layer substrate; and a first comb electrode having comb teeth and a second comb electrode having comb teeth, both of which are formed around the antenna pattern on the other face of the multi-layer substrate. The first comb electrode is electrically connected to the antenna pattern. The second comb electrode is electrically connected to the ground pattern through the first through hole. The comb teeth of the first comb electrode and the comb teeth of the second comb electrode are spaced from one another at predetermined intervals in a staggered manner.

Abstract: A communications structure may include a ground sheet, a feed conductor, and an active antenna branch electrically coupled to the feed conductor. A parasitic antenna branch may be electrically coupled to the ground sheet, and the active and parasitic antenna branches may be spaced apart. Moreover, the parasitic antenna branch may be between portions of the active antenna branch and the ground sheet.

Abstract: An antenna for circularly polarized radiation having a lamina of electrically conductive material with a generally square shape and a first chamfer on a first vertex of the generally square shape. The chamfer determines an asymmetrical shape of the lamina.

Abstract: An antenna structure consists of a substrate, a radiation element, a signal feeding element, and a grounding element. The radiation element includes a first radiator and a second radiator coupled to the first radiator, wherein the first radiator is identical to the second radiator. The signal feeding element is coupled to a joint of the first radiator and the second radiator, wherein the first radiator and the second radiator are symmetrically disposed in the left and right sides of the signal feeding element to permute an array. The grounding element includes a first grounding sub-element and a second grounding sub-element, wherein the first grounding sub-element is coupled between the first radiator and the substrate and the second grounding sub-element is coupled between the second radiator and the substrate. The first grounding sub-element is identical to the second grounding sub-element.

Abstract: A radio-frequency identification (RFID) inlay is provided that is substantially isolated from the environment in proximity to one side of the device. A radio-frequency identification (RFID) inlay is provided including a two-port microchip having a first and a second port, a first antenna coupled to the first port of the two-port microchip, a ground-plane, a first high-impedance body disposed substantially parallel to the first antenna and between the first antenna and the ground-plane, the first high-impedance body insulated from the ground-plane. The RFID inlay further includes a second antenna coupled to the second port of the two-port microchip, and a second high-impedance body disposed substantially parallel to the second antenna and between the second antenna and the ground-plane, the second high-impedance body insulated from the ground-plane.

Abstract: A plate-like radiation element is arranged above a ground plane with a space from the ground plane. The radiation element 2 resonates at a predetermined low-frequency wavelength ?1 and a predetermined high-frequency wavelength ?2. A feeding portion for being connected to a feed circuit and a pair of short-circuit portions are provided on peripheral edge portions of the radiation element. The feeding portion is provided on one end of the radiation element. The pair of short-circuit portions for being connected to a ground plane are arranged in areas positioned at opposite sides, on both sides of the feeding portion along peripheral edge directions of the radiation element, where the voltages of high-frequency resonance supplied from the feeding portion to the individual short-circuit portions are zero. The short-circuit portions extend toward the ground plane for being connected to the ground plane. At the other end opposite to the feeding portion of the radiation element is an open end.

Abstract: A circular polarization antenna structure with a dual-layer ceramic includes a first hard dielectric body, a first metal layer, a grounding layer, an antenna feed pin, a second hard dielectric body, a second metal layer and an adhesive element. The first metal layer and the grounding layer dispose on a top surface and a bottom surface of the first hard dielectric body. The antenna feed pin passes through the through hole of the first hard dielectric body, the top side of the antenna feed pin is fixed on the top surface of the first hard dielectric body, and the bottom side of the antenna feed pin extends outwards from the bottom surface of the first hard dielectric body. The second hard dielectric body disposes above the top side of the first hard dielectric body. The second metal layer disposes on the top surface of the second hard dielectric body.

Abstract: A disclosed antenna apparatus includes a dielectric flexible base having an element pattern and a ground pattern formed thereon. The dielectric flexible base has a cylindrical shape encompassing an antenna axis. The element pattern and the ground pattern formed on the dielectric flexible base are symmetrically formed with respect to the antenna axis.

Abstract: A multiband antenna includes a feed portion, a radiating portion, and a ground via. The feed portion includes a first feed section and a second feed section paralleled to each other. The radiating portion includes a first radiator, a second radiator and a third radiator. The first radiator is L shaped with a free end. The second radiator is L shaped with a free end. The free ends of the second radiator and the first radiator extend toward to each other and partially overlap to define a slot therebetween. The third radiator includes a trapezoid section and a connecting section. The short portion includes a first short section and a second short section. The first short section connects the first radiator to the ground via, and the second short section connects the second radiator and the third radiator to the ground via.

Abstract: Handheld electronic devices are provided that contain wireless communications circuitry having at least first and second antennas. An antenna isolation element reduces signal interference between the antennas, so that the antennas may be used in close proximity to each other. A planar ground element may be used as a ground by the first and second antennas. The first antenna may be formed using a hybrid planar-inverted-F and slot arrangement in which a planar resonating element is located above a rectangular slot in the planar ground element. The second antenna may be formed from an L-shaped strip. The planar resonating element of the first antenna may have first and second arms. The first arm may resonate at a common frequency with the second antenna and may serve as the isolation element. The second arm may resonate at approximately the same frequency as the slot portion of the hybrid antenna.

Abstract: An electronically steerable antenna includes at least one driven element, at least one controllable counterpoise element, and a support structure on which the driven element and the controllable counterpoise element are disposed. The controllable counterpoise element has at least one geometric characteristic which can be varied. A radiating angle of the driven element is selectively controlled, at least in part, by modifying the geometric characteristic of the at least one controllable counterpoise element. The counterpoise element may include multiple conductive segments, at least a subset of which may be adapted to be individually electrically connected together so as to modify the radiating angle of the driven, element.

Abstract: A wireless explosion-proof apparatus includes an antenna, an explosion-proof chamber, a communication module disposed in the explosion-proof chamber, the communication module configured to transmit and receive a wireless signal through the antenna, a connector portion having a central conductor, to which the antenna is electrically connected, the central conductor having one end connected to the communication module through a connection line and the other end exposed to the outside of the explosion-proof chamber, and a short stub module disposed in the explosion-proof chamber and disposed on the connection line, the short stub module configured to secure electric conduction between the one end of the central conductor and a ground so as to keep potential of the central conductor at certain potential.

Abstract: The present invention is a single or multiple non-resonant slot antenna where said slots are formed from a continuous upward extension of the conducting ground plane with lateral horizontal planar extensions to form a top plane defining said slots.

Abstract: A multiple input-multiple output antenna assembly with high isolation between the antennas is disclosed. The antenna assembly includes a substrate with a ground layer at its surface. Two antennas are disposed opposing each other on the substrate. An isolation element in a form of a patterned slot is interposed between the first and second antennas on the ground plane. A first signal port is provided for applying a first signal to excite the first antenna and a second signal port is provided for applying a second signal to excite the second antenna. The isolation element provides isolation that inhibits electromagnetic propagation between the two antennas.

Abstract: The antenna of the invention includes a transceiver unit and a dielectric unit. The transceiver unit has a ground portion, a radial portion, a conductive portion and a feed portion. The ground portion and the radial portion are disposed apart in parallel, so as to form a space therebetween. The distance between the ground portion and the radial portion is defined as a transceiver unit height. The dielectric unit is disposed in the space. That is, the dielectric unit is disposed between the ground portion and the radial portion. The dielectric unit has a dielectric unit thickness less than the transceiver unit height. In one embodiment, the ratio of the dielectric unit thickness to the transceiver unit height is preferably between 0.4 and 0.7.

Abstract: Slot antennas are provided for electronic devices such as portable electronic devices. The slot antennas may have a dielectric-filled slot that is formed in a ground plane element. The ground plane element may be formed from part of a conductive device housing. The slot may have one or more holes at its ends. The holes may affect the impedance characteristics of the slot antennas so that the length of the slot antennas may be reduced. For example, the holes can be used to synthesize the impedance of the slot antennas so that the slot antennas have a resonant frequency that is different from their natural resonant frequency. The holes may affect the impedance of the slot antennas in multiple radio-frequency bands.

Abstract: The disclosure relates to a planar antenna comprising at least one radiator element separated from a ground plane by a dielectric. The antenna also comprises an assembly of conductive studs which is connected to and extends from at least one element of a group of elements comprising the ground plane and at least one radiator element in such a way that at least one physical dimension of said at least one radiator element for a determined resonance frequency is reduced.

Abstract: This invention refers to an antenna structure for a wireless device comprising a ground plane and an antenna element, wherein the ground plane has the shape of an open loop. The invention further refers to an antenna structure for a wireless device, such as alight switch or a wristsensor or wristwatch, comprising an open loop ground plane having a first end portion and a second end portion, the open loop ground plane defining an opening between the first end portion and the second end portion; and an antenna component positioned within the opening defined between the first end portion and the second end portion and overlapping at least one of the first end portion or the second end portion. Further the invention refers to a corresponding wireless device and to a method for integrating such an antenna structure in a wireless device.

Abstract: An antenna assembly is provided suitable for use with a remote communications module such as, for example, a keyless entry module, a tire pressure monitoring module, etc. The antenna assembly generally includes a support, a folded metallic antenna element mounted on the support, an amplifier coupled to the folded antenna element, and a transmission line coupled to the amplifier.

Abstract: An integrated multi-band antenna module includes a first antenna body having a first body and a second body, and a second antenna body having a third body and a fourth body. The first to the fourth body have relative radiating portions, feed lines, and ground lines. The radiating portions have relative arms, antenna portions, feed arms, and conducting top plates. Resonant excitation sources are formed by capacitive coupling effects from gaps between the above components. The capacitive coupling effects also lower the inductance effect and the reflection loss. Mirror effect and large-scaling conducting top plates are used to raise a radiating effect. The relative gaps form the capacitive coupling effects to receive optimized frequencies so that a small-size integrated antenna with multi-band, high radiating effect, good resonant effect, and suitable for an ultra wide bandwidth operation is achieved.

Abstract: An array antenna module includes multiple antenna assemblies. Each antenna assembly generally includes a first radiating element and a second radiating element spaced apart from the first radiating element and capacitively coupled thereto. A first transmission line is capacitively coupled to the first radiating element, and a second transmission line is electrically coupled to the first radiating element by a connector. The antenna assembly is operable to transmit at least one or more signals to at least one or more wireless application devices and/or to receive at least one or more signals from at least one or more wireless application devices. The first radiating element, second radiating element, first transmission line, and/or second transmission line are coupled to substrates. And at least one or more of the substrates may include epoxy resin bonded glass fabric such as, for example, flame retardant 4.

Abstract: The invention relates to a dual band antenna, in particular for satellite navigation applications, comprising a multilayer structure that is provided with an upper first antenna element (12) for receiving electromagnetic waves having a frequency in a first frequency band, a lower second antenna element (16) arranged below the first antenna element (12) for receiving electromagnetic waves having a frequency in a second frequency band, two electrically conductive ground layers (20,28), a first and a second one, that are arranged one above the other and that are arranged in turn below the lower second antenna element (16), and a conducting-path layer (24) having at least one first conductive path (30,32) for electromagnetically coupling with the first antenna element (12) and having at least one second conductive path (34,36) for electromagnetically coupling with the second antenna element (16).

Abstract: An antenna tube configured to accommodate a grounding clip and an antenna, the antenna tube having a cylindrical tube having an upper end and an inner end opposite the upper end; a circumferentially extending groove in the cylindrical tube located between the upper end and the inner end; and a tapered lip at the inner end of the cylindrical tube, wherein the grounding clip fits between the circumferentially extending groove and the tapered lip, and at least a portion of the antenna slidably fits into the upper end of the cylindrical tube.

Abstract: An antenna includes: a grounding element extending along a first plane; a radiating element having a first side and extending along a second plane substantially parallel to the first plane, the radiating element being aligned with the grounding element in a normal direction transverse to the first and second planes; a bridging element interconnecting the grounding and radiating elements; and a feeding element extending and tapered from the first side of the radiating element toward the grounding element.

Abstract: An antenna device usable in a radio apparatus including a printed board includes a ground conductor of the printed board, a first partial element, a second partial element and a parasitic element. The first partial element is shaped into an area having a first side facing a side of the ground conductor and a second side directed to cross the side of the ground conductor, and is provided with a feed portion around a first end of the first side being closer to the second side. The second partial element branches off from the first partial element around one of two ends of the second side being farther from the feed portion, and is directed almost against a direction from the feed portion to a second end of the first side being farther from the second side. The parasitic element has an end grounded around the second end.

Abstract: A planar antenna device is mounted on a board including a dielectric layer and two conductor layers vertically sandwiching the dielectric layer. The upper conductor layer includes a first radiating element having an end portion connected through a via hole to a ground formed by the lower conductor layer, a second radiating element having an open end portion, first and second ground conductors connected to respective base portions of the first and second radiating elements via resistors, and a feeder line configured to feed power to the first and second radiating elements.

Abstract: A capacitively loaded magnetic dipole antenna is provided with a portion that comprises a length that is longer than a straight line distance between a first end and a second end of the third portion such that antenna with a tower profile and/or smaller form factor is achieved.

Abstract: An RFID antenna comprising an elongated structure existing along an axis that is long compared to the signal wavelength and including twin ribbon-like feed lines of electrically conductive material, the feed lines being in a common plane and being uniformly laterally spaced from one another, and a plurality of radiating perturbations associated with the feed lines at a plurality of locations spaced along the feed lines, at each location each feed line has its own individual perturbation or portion of a perturbation.

Abstract: A wireless electronic device is disclosed that includes one or more ground planes and an antenna electrically coupled to the one or more ground planes. The antenna is positioned adjacent to a portion of the one or more ground planes. The wireless electronic device includes a material placed in a position and having a dielectric constant selected to increase an effective electrical size of the one or more ground planes relative to the effective electrical size of the one or more ground planes without the material. Other wireless electronic devices and methods for forming the same are also disclosed.

Abstract: Methods and apparatus are provided for adjusting the electromagnetic fields produced by telephones or other mobile devices capable of wireless communication. A wireless communication device includes a substrate having a ground plane. An antenna is coupled to the ground plane, and electrical currents are produced in the ground plane during operation of the antenna. A switchable counterpoise circuit that includes a conducting element and an inductor in series is provided on the substrate. The switchable counterpoise is selectively coupled to the ground plane based upon an operating mode of the wireless communications device, thereby adjusting the electrical currents flowing in the ground plane when the counterpoise is active. The changes in the ground plane currents can produce adjustments in the electromagnetic fields produced by the device, thereby improving hearing aid compatibility (HAC) of the device.

Abstract: A multi-band antenna includes a grounding element having a first side, a radiating element separated form the first side of the grounding element, and a connecting element. The connecting element connects the grounding element to the radiating element and includes a first end slantwise extending from the grounding to form a first angle except a right angle between the connecting element and the grounding element.

Abstract: Antenna window structures and antennas are provided for electronic devices. The electronic devices may be laptop computers or other devices that have conductive housings. Antenna windows can be formed from dielectric members. The dielectric members can have elastomeric properties. An antenna may be mounted inside a conductive housing beneath a dielectric member. The antenna can be formed from a parallel plate waveguide structure. The parallel plate waveguide structure may have a ground plate and a radiator plate and may have dielectric material between the ground and radiator plates. The ground plate can have a primary ground plate portion and a ground strip. The ground strip may reflect radio-frequency signals so that they travel through the dielectric member. The antenna may handle radio-frequency antenna signals in one or more communications bands. The radio-frequency antenna signals pass through the dielectric member.

Abstract: A portable terminal may include a terminal body, a printed circuit board having a ground unit coupled to an antenna, and an electric field reducing unit to transfer a current flowing in the ground unit to a side surface of the terminal body and to reduce strength of an electric field.

Abstract: A problem of the invention is to provide a small-size communication terminal apparatus capable of reducing an SAR and also widening a band of an antenna and further achieving thinning. The communication terminal apparatus has a substrate (13) disposed inside a housing, a power feeding part (12) disposed in the substrate (13), a monopole antenna (11) having plural elements of multi-frequency sharing, the monopole antenna for feeding power by electrically connecting one end to the power feeding part, and a ground wire (14) electrically connected to a wireless ground of the substrate (13), and the monopole antenna (11) having the plural elements is arranged in a direction vertical to a surface of the substrate (13) and in a back surface direction of the housing so as to be opposed to a human body at the time of a call.

Abstract: The invention provides a PCB type dual band patch antenna and a wireless communication module incorporating the antenna. The antenna includes a substrate. A ground pattern is formed on the substrate. A radiating patch is formed on the substrate to be spaced apart from the ground pattern at a predetermined distance. The radiating patch includes an input arm and a main radiator which are divided by a slot with ‘L’ and inverse ‘L’ shapes combined. The main radiator has an open terminal opposing the input arm across the slot. Also, a feeding part is connected to the input arm of the radiating patch to apply an electrical signal to the radiating patch. Further, wireless devices are integrally mounted on the PCB substrate used for the antenna, thereby achieving a high efficiency and wide-bandwidth dual band patch antenna and a minimal-sized and low-cost wireless communication module.

Abstract: A handset device including a ground plane, an antenna, a first conductive strip and a second conductive strip is provided. The antenna is electrically connected to the ground plane and forms a current loop with the ground plane. The ground plane forms a current area according to the current loop. The first conductive strip is electrically connected to the current area and changes a current distribution on the ground plane to increase a current density passing through the current area.

Abstract: An antenna applied in a communication device is provided. The antenna includes a conductive supporting portion, a radiator and a grounding portion. The radiator operates in a first frequency band. The grounding portion is connected to the radiator through the conductive supporting portion. The grounding portion includes a cavity extended from a top surface of the grounding portion into the interior of the grounding portion. A resonant cavity operating in a second frequency band is formed between the radiator and the cavity.

Abstract: A slit (15) is formed between a feed point and GND point of an inverted-F antenna to make the points electrically distant from each other, and at least three antenna elements (14a, 14b, and 14c) are formed. The at least three antenna elements (14a, 14b, and 14c) generate at least three resonance points. An antenna radiating plate (3) projects outwardly so that at least a major part thereof does not face a ground plate (4). Therefore, a multi-band antenna device capable of achieving a wider bandwidth without using a parasitic element, and a communication terminal apparatus are provided.

Abstract: A multi-band antenna has a grounding plate with a first end and a second end defined at a longer side thereof. The longer side has an upward first connecting portion adjacent to the first end and a vertical second connecting portion. A feeding portion extends downwards from a lower edge of the second connecting portion. A first antenna radiator extends towards a same direction with respect to the second connecting portion along the grounding plate from an upper side of the second connecting portion. A second antenna radiator includes a first radiating portion, a second radiating portion and a third radiating portion. A third antenna radiator extends parallel to the first radiating portion from a side of the feeding portion. A coupling component includes a first section, a second section and a third section extending opposite to the first section from an end of the second section.

Abstract: Disclosed is an internal antenna providing impedance matching for a wide band where a feeding patch is placed on a substrate. The disclosed antenna may include: a substrate; an impedance matching/feeding unit including a feeding patch, which is formed on the substrate and electrically connected to a feeding point, and a ground patch, which is electrically connected to a ground and formed above the feeding patch separated at a designated distance from the feeding patch; and a radiator formed extending from the ground patch, where the impedance matching/feeding unit performs impedance matching by way of coupling between the feeding patch and the ground patch, and the radiator receives coupling feeding from the feeding patch. The disclosed antenna has the advantages of overcoming the narrow band problem of a planar inverted-F antenna, and of allowing more efficient utilization of space in an internal antenna for a wide band using coupling matching and coupling feeding.

Abstract: A broadband radiating device, that includes: a first planar conductive pattern that includes: a symmetrical trapezoid portion in which multiple slots are formed, and a rectangular portion; wherein a long side of the rectangular portion contacts a long side of the symmetrical trapezoid portion; a planar ground pattern; and a planar non-conductive element that separates between the first planar conductive pattern and the planar ground pattern; wherein a narrow end of the symmetrical trapezoid pattern is connected to a feeding area; and wherein the planar ground pattern is adapted to function as a ground of an electrical circuit.

Abstract: An antenna element includes: an antenna plate; an antenna probe formed monolithically with the antenna plate and extending in a vertical direction from the antenna plate; a ground plate disposed in parallel to the antenna plate at a distance; and a dielectric spacer disposed between the antenna plate and the ground plate, wherein the antenna probe is bent from an edge of the antenna plate toward a center thereof.