Abstract: An apparatus and method are provided for producing a wide E-plane half power beamwidth. The apparatus can include a dipole antenna and a complimentary slot antenna in an infinite ground plane. The apparatus can also include a waveguide with surrounding structure that can be adjusted to produce the desired half power beamwidth.

Abstract: An antenna is provided. The antenna includes a substrate, a ground element, a first feed conductor and a second feed conductor. The substrate includes a first surface and a second surface. The ground element is formed on the first surface, wherein the ground element has an aperture, the aperture is funnel shaped, the aperture has an opening portion and a convergent portion, and the opening portion is connected to the convergent portion. The first feed conductor is disposed on the second surface, wherein the first feed conductor feeds a first signal to the aperture. The second feed conductor is disposed on the second surface, wherein the second feed conductor feeds a second signal to the aperture.

Abstract: An antenna includes a ground plane having a slot. The slot may be miniaturized using a meandered slot structure or other appropriate reactive loading method as an end load to one or both ends of the slot. An edge treatment may be included on one or more edges of the ground plane or a closely spaced reflecting plane. The antenna is structured to transmit or receive a signal independently or in response to electromagnetic radiation.

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: A dielectric resonator antenna that has active components on a selected surface. Also a feed element in the form of a slot may be formed on the surface to efficiently generate the proper resonance mode within the bulk of the dielectric resonator antenna. The entire dielectric resonator antenna may be flip-chip mounted onto a suitable microwave substrate.

Abstract: The present invention relates to a planar antenna structure comprising at least one radiating element constituted by a longitudinal radiation slot etched onto a substrate. This structure comprises at least one modification element of the radiation pattern positioned in the radiation zone of the radiating element.

Abstract: A microwave antenna assembly includes a first dielectric layer, a second dielectric layer, a conductive layer, a first conductive patch, and a second conductive patch. The conductive layer is disposed in an inner region between the first dielectric layer and the second dielectric layer. The conductive layer includes a slot. A first conductive patch is surrounded by the slot. The second conductive patch is disposed against the second dielectric layer outside the inner region, and is electromagnetically coupled to the first conductive patch.

Abstract: A dielectric waveguide slot antenna which is capable of radiating a circularly-polarized wave comprises: a dielectric waveguide having a slot through which a dielectric is exposed in a part of an electrically conductive film formed on a surface of the dielectric waveguide; a printed circuit board having a via hole opposed to the slot with the same shape as that of the slot; and a conductor plate having a first through-hole opposed to and having approximately the same shape as the via hole, and a pair of second through-holes in a vicinity of the first through-hole. The dielectric waveguide, the printed circuit board and the conductor plate are joined together with aligning the slot, the via hole and the first through-hole with each other. The printed circuit board has a conductor layer formed in positions facing to the second through-holes, and the second through-holes are arranged point-symmetrically with each other.

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: According to one exemplary embodiment, and RFID device is disclosed. The RFID device includes a substrate, an antenna structure having a first sheet of electrically conductive material including two parts and an elongated slot extending therebetween, a wireless communications device coupled to the substrate, and an environmentally-responsive material disposed within a portion of the elongated slot.

Abstract: An antenna structure includes a substrate, a radiation unit, and a metal plate. The radiation unit is disposed on the substrate. The metal plate is separated from the radiation unit for a distance and is electrically isolated with the radiation unit. The metal plate is excited by the radiation unit to generate at least one resonance mode, and includes a hole penetrating the metal plate. Thus, the gain is enhanced, the bandwidth is increased, and multiple resonance modes are provided.

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 multi-element anti-jamming (A/J) antenna array is disclosed. The multi-element anti-jamming (A/J) array may include a circularly-polarized edge slot antenna and a dielectric resonator antenna. The circularly-polarized edge slot antenna and the dielectric resonator antenna are configured for implementation within an artillery shell, munition, or the like. The circularly-polarized edge slot antenna may be a gun-hard, embedded GPS antenna having an on-axis phase center. Further, the circularly-polarized edge slot antenna may have a forward-looking radiation pattern.

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: An antenna unit includes a substrate (120), an antenna (110) located on one major surface of the substrate (120), a dielectric plate (130) opposed to the major surface of the substrate (120), and a dielectric layer (190) interposed between the substrate (120) and the dielectric plate (130). The dielectric plate (130) has a dielectric constant of not more than the dielectric constant of the substrate (120). The dielectric layer (190) has a dielectric constant smaller than the dielectric constant of the dielectric plate (130).

Abstract: A notch antenna includes a ground conductor having a slit and a reactance circuit containing a capacitive reactance element and an inductive reactance element, the reactance circuit being placed at an open end of the slit so as to bridge the slit and being connected to the ground conductor. The slit has a closed end to which power is supplied, and the capacitance of the capacitive reactance element and the inductance of the inductive reactance element are set so that the reactance circuit has a capacitance desired to obtain a first antenna resonance point at a first frequency and a capacitance desired to obtain a second antenna resonance point at a second frequency.

Abstract: An antenna apparatus for use in a transmitter or a receiver in a communication system. The antenna apparatus includes: a dielectric substrate having a conductor layer on one of surfaces; and a slot antenna including an antenna electrode formed on the one surface and disposed substantially at the center, a grounded conductive surface surrounding the antenna electrode, and a slot transmission line made by a gap between the antenna electrode and the grounded conductive surface.

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: A patch antenna is disclosed. The disclosed patch antenna may include: a first radiator configured to generate a circular polarized wave; a first dielectric substrate equipped under the first radiator; a second radiator, placed under the first radiator at a designated distance from the first radiator, and configured to generate a linear polarized wave; a second dielectric substrate equipped under the second radiator; and a reflecting plate equipped under the second radiator at a designated distance from the second radiator; where the first dielectric substrate, the second radiator, the second dielectric substrate, and the reflecting plate are connected through at least one via. A patch antenna according to the present invention has the advantages of being able to generate linear polarized waves and circular polarized waves simultaneously, and of having a small size while still having a high design frequency band.

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: 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 multi-band HAC compatible antenna module having a metal shield arranged around the built-in antenna for resonant coupling with the antenna to lower electromagnetic interference and to improves hearing aids compatibility characteristic. When compared with a reference antenna without metal shield, the multi-band HAC compatible antenna module shows 3 dB˜4 dB HAC improvement in GSM850 and GSM900, and 1 dB HAC improvement in DCS and PCS bands.

Abstract: A mobile wireless communications device may include a portable housing, a printed circuit board (PCB) carried by the portable housing, and wireless transceiver circuitry carried by the PCB. The mobile wireless communications device also may include an antenna coupled to the wireless transceiver circuitry. The antenna may include a loop conductor, a first conductor body coupled to the loop conductor and extending into the interior thereof to define a first slotted opening with adjacent portions of the loop conductor, and a second conductor body coupled to the loop conductor and extending into the interior thereof to define a second slotted opening with adjacent portions of the loop conductor. The first and second conductor bodies may be spaced apart to define a third slotted opening therebetween. The first slotted opening may have an enlarged width portion adjacent the first conductive body.

Abstract: In one embodiment, the present invention includes a slot antenna that is formed on a ground plane of a circuit board. The slot antenna may be connected to radio circuitry adapted on the circuit board by way of a feedline, which is coupled to the radio circuitry and across a portion of the slot antenna.

Abstract: A portable electronic device is provided that has a hybrid antenna. The hybrid antenna may include a slot antenna structure and a planar inverted-F antenna structure. The planar inverted-F antenna structure may be formed from traces on a flex circuit substrate. A backside trace may form a series capacitance for the planar inverted-F antenna structure. The antenna slot may have a perimeter that is defined by the location of conductive structures such as flex circuits, metal housing structures, a conductive bezel, printed circuit board ground conductors, and electrical components. Springs may be used in electrically connecting these conductive elements. A spring-loaded pin may be used as part of an antenna feed conductor. The pin may connect a transmission line path on a printed circuit board to the planar inverted-F antenna structure while allowing the planar inverted-F antenna structure to be removed from the device for rework or repair.

Abstract: Systems and methods for exciting long slot radiators of an RF antenna are provided. In one embodiment, the invention relates to a radiator transition assembly for exciting a long slot radiator of an antenna, the transition assembly including a folded flexible circuit substrate including at least two folds forming a long slot radiator, an excitation circuitry configured to generate signals for exciting the long slot radiator, and a microstrip transmission line coupled to the excitation circuitry and positioned along the folded flexible circuit substrate, where the microstrip transmission line extends across an opening of the long slot radiator.

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: The present invention aims to provide a slot antenna, an electronic apparatus, and a method for manufacturing a slot antenna which are capable of obtaining multiple resonances with a small mounting space. The slot antenna according to the present invention includes three conductor plates: a rectangular conductor plate 10 having a notch with an open end formed at one side of the conductor plate; a rectangular conductor plate 20 disposed to face the conductor plate 10; a third conductor plate connecting the conductor plates 10 and 20 on a side opposite to the open end of the conductor plate 10; and a feeder 40 connecting a core wire 41 and a ground 42 at two points across the notch of the conductor plate 10.

Abstract: The invention relates to a polarization diversity multi-antenna system comprising a first slot type antenna (20) and at least one second patch type antenna (30), said first and second antennas sharing the same ground plane (10), the slot of the first antenna being laid out in said ground plane and the patch of the second antenna being at least partly plumb with said slot.

Abstract: A global positioning system antenna includes a radiator. The radiator includes a base section, an extension section connected to an edge of the base section, a first curved section connected to an edge of the extension section, and a second curved section connected to a distal end of the first curved section. The first curved section and the base section define a slot therebetween. The second curved section defines a first gap and a second gap thereon. The first gap and the second gap face each other.

Abstract: The invention relates to a slot antenna, more particularly to a transmitting antenna for RFID, comprising an antenna contour board having a plurality of antenna slots and at least one control circuit for enabling the antenna contour board to transmit and/or receive electromagnetic radiation. The slot antenna is characterized in that in at least one antenna slot of the antenna contour board there is inserted a circuit board carrying a control circuit. The invention further relates to an RFID method involving the use of the slot antenna of the invention.

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: An embodiment of the present invention provides an apparatus, comprising a multi-band highly isolated planar antenna directly integrated with a front-end module (FEM).

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.

Abstract: Electronic devices such as handheld devices may have wireless communications circuitry. The wireless communications circuitry may include a broadband antenna and circuitry that covers multiple communications bands. The broadband antenna may be formed from a parallel-fed dipole. The antenna may have first and second antenna resonating element regions on opposing sides of a slot. The slot may be an open slot that has one open end and one closed end. The slot may be formed from an opening in conductive housing structures in a conductive housing for an electronic device. The conductive housing structures may include sidewall structures, rear housing wall structures, and other conductive structures. The antenna may have a feed with a feed line that crosses the slot. An interposed dielectric substrate member may separate the feed line from the conductive structures. The feed line may have sections with different widths to minimize feed line length.

Abstract: A radio frequency identification (RFID) device includes a conductive antenna structure having an elongated slot therein. Parts of the antenna structure on both sides of one end of the elongated slot are coupled to a wireless communication device, such as an RFID chip or interposer. On the opposite end of the elongated slot, parts of the antenna structure at both sides of the elongated slot are electrically coupled together, for instance by being coupled together by other conductive parts of the antenna structure. All of the parts of the antenna structure may be parts of a continuous unitary layer of conductive material. The antenna structure with the elongated slot therein may facilitate increased readability of the RFID device, particularly in directions out from the edges of the RFID device.

Abstract: A radiator element for RF transmission and reception over a wide band of frequencies. The radiator element is formed of conductive material on substrate surface of conductive material in the form of a pair of horns extending in opposite directions to distal tips defining the widest distance of a mouth of a cavity. The mouth reduces in cross-section to a narrowest point in between said pair of horns. The resulting radiator element will radiate and receive frequencies between frequencies the distance of the widest point and narrowest point are sized to receive.

Abstract: A plurality of conductive strip elements compose multilayer loading structures on top and bottom surfaces of a dielectric transmission substrate, by which a part of intra-substrate transmission components of a electromagnetic wave are leaked out of the surfaces. Each multilayer loading structure includes a first conductive strip group of conductive strip elements within a first plane, and a second conductive strip group of conductive strip elements within a second plane, and the first and second conductive strip groups are formed to be capacitively coupled to each other. In each of the first and second conductive strip groups, the conductive strip elements are placed at intervals of a distance of a quarter or less of a reference adjacent distance, where the reference adjacent distance is defined as a distance for generating spatial harmonics of the electromagnetic wave on the surfaces of the dielectric transmission substrate.

Abstract: Wireless portable electronic devices such as laptop computers are provided with antennas. An antenna may be provided within a clutch barrel in a laptop computer. The clutch barrel may have a dielectric cover. Antenna elements may be mounted within the clutch barrel cover on an antenna support structure. There may be two or more antenna elements mounted to the antenna support structure. These antenna elements may be of different types. A first antenna element for the clutch barrel antenna may be formed from a dual band antenna element having a closed slot and an open slot. A second antenna element for the clutch barrel antenna may be formed from a dual band antenna element of a hybrid type having a planar resonating element arm and a slot resonating element. Flex circuit structures may be used in implanting the first and second antenna elements for the clutch barrel antenna.

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: Methods, antennas and other embodiments associated with impedance matching an antenna feed slot. A slot antenna includes a planar metal sheet. A feed slot opening is formed in the metal sheet. The feed slot has a first end and a second end. A tapered opening is formed in the metal sheet. Adjacent sides of the tapered opening touch the first end of the feed slot. An impedance matching star shaped opening is formed in the metal. The impedance matching star shaped opening touches the second end of the feed slot.

Abstract: A wideband cavity-backed slot antenna includes an enclosure having a slot, a balun located proximate the slot, a feed extending through the enclosure to the balun, and a plurality of coupled lines proximate the balun and distal to a location at which the balun is coupled to the feed.

Abstract: Methods, antennas and other embodiments associated with impedance matching an antenna feed slot are based on a fractal shape. A slot antenna includes a planar metal sheet. A feed slot opening is formed in the metal sheet. The feed slot has a first end and a second end. A tapered opening is formed in the metal sheet. Adjacent sides of the tapered opening touch the first end of the feed slot. An impedance matching fractal shaped opening is formed in the metal. The impedance matching fractal shaped opening touches the second end of the feed slot.

Abstract: An electronic device includes a multi-frequency antenna. The multi-frequency antenna includes a ground portion, a support body, a radiation portion, and a strap. The ground portion defines a gap, and two grooves communicating with the gap and located at opposite ends of the gap. The radiation portion resists against a sidewall bounding the gap, and is connected to the strap. The radiation portion is accommodated in the gap and substantially coplanar with the ground portion. The radiation portion defines a slot. The support body is located in the gap and on the radiation portion, to support the strap.

Abstract: An ultra wideband antenna includes: a substrate; a grounding unit, installed on the substrate and scooped with a first slot and a first strip hole; a signal feeding unit, installed on the substrate and including a horizontal portion and a vertical portion, in which the horizontal portion is located in the first slot and the vertical portion is located in the first strip hole; a first complementary, separate, circular resonator; and a second complementary, separate, circular resonator, wherein the first complementary, separate, circular resonator and the second complementary, separate, circular resonator are installed in the horizontal portion of the signal feeding unit and are connected with each other.

Abstract: The planar antenna apparatus may include a planar, electrically conductive, patch antenna element having a geometric shape defining an outer perimeter, and a pair of spaced apart signal feedpoints along the outer perimeter of the planar, electrically conductive, patch antenna element and separated by a distance of one quarter of the outer perimeter to impart a traveling wave current distribution. The outer perimeter of the planar, electrically conductive, patch antenna element may be equal to about one operating wavelength thereof. The apparatus may provide dual circular or dual linear polarization. The planar patch element may relate to a full wave loop antenna as a compliment.

Abstract: The disclosure provides an antenna device, which includes a waveguide antenna having wall surfaces and for emitting a radio wave in a direction substantially perpendicular to an emission face that is one of wall surfaces of the waveguide antenna extending in an elongated direction of the waveguide antenna, a plate-shape two-dimensional opening slots for beam formation formed in the waveguide antenna on the emission face side, a power feed waveguide module arranged in the rear face of the waveguide antenna opposite from the emission face and for supplying electric power to the waveguide antenna, and a cylindrical radome having a substantially circular cross-section of a diameter that is substantially equal to a length of the emission face in a direction perpendicular to the long-side direction so that the waveguide antenna is contained in the radome so as to be arranged at substantially the center of the radome.

Abstract: An antenna device (AD) for a RF communication equipment, comprises i) a substrate (S) comprising front (FS) and back (BS) sides, ii) a planar antenna element (AE) fixed to the substrate back side (BS), iii) a group of at least one component (G1) fixed to the substrate front side (FS), in an area located under the antenna element (AE), and connected to the antenna element (AE) through at least a first connecting means (VH 1) passing through the substrate (S), and a low resistivity layer (BL) buried into the substrate (S) for connecting to ground in order to isolate at least the group of component(s) from electromagnetic disturbances induced by the antenna element (AE).

Abstract: Provided is an antenna capable of establishing electrical conductivity between a flange-like short-circuit section of a power supply section and a thin metal plate even in a harsh temperature environment in a space environment. Under a state in which an apical portion of a power supply section is inserted from an outer side of a face plate into a hole for the power supply section of a thin metal plate, a dielectric plate, and a metal plate, a plurality of screws are inserted from the outer side of a flange-like short-circuit section through a plurality of insertion holes of the flange-like short-circuit section, the thin metal plate, and the dielectric plate, and the plurality of screws are threadingly inserted into a plurality of tapped holes of the metal plate so that electrical conductivity between the flange-like short-circuit section and the thin metal plate is established through direct contact.

Abstract: In one embodiment according to the teachings of the present disclosure, an antenna generally includes a first, second, and third elements. The first and second elements form a first electro-magnetic radiator that is operable to transmit or receive a first signal having a first sense of polarization. The first and third elements form a second electro-magnetic radiator that is operable to transmit or receive a second signal having a second sense of polarization that is different than the first sense of polarization.