Abstract: A dual band antenna includes a far field antenna structure for facilitating the communication of first data with a remote device via far field signaling in a millimeter wave band. A near field antenna structure facilitates the communication of second data with a remote device via near field signaling in a near field band. The far field antenna structure and the near field antenna structure share at least one common antenna element.

Abstract: A device for transmitting and/or receiving electromagnetic RF signals, in particular a UWB antenna, has a planar, ultra-wideband antenna structure made of a plurality of dipole elements. Each dipole element comprises two poles having substantially elliptical base shapes. A measuring machine, in particular a locating and/or material identifying device for identifying objects encased in a medium and/or for identifying material parameters, in particular the moisture of a material, has at least one UWB sensor comprising at least one device for transmitting electromagnetic RF signals. A machine tool monitoring device has a detecting device for detecting the presence of a material type, in particular of tissue, in a machine tool working area, and has a working mechanism wherein the detecting device comprises a sensor unit having at least one device for transmitting electromagnetic RF signals.

Abstract: In an antenna apparatus, a radiation element includes a perturbation element. A first power feeding line has a first end connected to the radiation element and is configured to feed power to the radiation element. A second power feeding line has a first end configured to feed power to the radiation element through electromagnetic coupling. The radiation element, the first power feeding line and the second power feeding line are arranged on a same plane to constitute a balance type antenna.

Abstract: A plate-shaped radiating element of a shape having at least three planes is formed by bending a metal plate having a substantially rectangular shape. A first slit is provided from a lower edge of the plate-shaped radiating element up to a portion in the vicinity of an upper edge of the plate-shaped radiating element while passing through a center point of the plate-shaped radiating element, and forms plate-shaped dipole elements on both sides thereof. A second slit is provided parallel to the upper edge of the plate-shaped radiating element and forms a folded element on an upper side thereof. Feeding points are provided on both sides of the first slit at the lower edge of the plate-shaped radiating element.

Abstract: A dipole antenna used in an operation frequency includes a dipole radiation main body, a first semi-loop metal line and a second semi-loop metal line is provided. The dipole radiation main body has a first radiation line arm and a second radiation line arm aligned in a straight line, wherein a gap exists therebetween to form a feeding terminal. The first semi-loop metal line has two ends respectively connected to the first radiation line arm and the second radiation line arm to form a first matching loop covering the feeding terminal. The second semi-loop metal line has two ends respectively connected to the first radiation line arm and the second radiation line arm to form a second matching loop, which is larger than the first matching loop.

Abstract: A broadband monopole antenna with dual-radiating elements is provided. In one embodiment, an antenna comprises a ground plane; a first radiating structure having a symmetric configuration along a central axis, comprising a first feed point electrically connected to the base of said first radiating structure along said central axis and a first slot with a corresponding first open-ended strip along said central axis; and a second radiating structure conjoined with said first radiating structure having a symmetric configuration along said central axis, comprising a second feed point electrically connected to the base of said second radiating structure along said central axis and a second slot with a corresponding second open-ended strip along said central axis; and wherein the antenna resonates and operates at a plurality of resonant frequencies.

Abstract: A dipole antenna may be created by surrounding a portion of the continuous conductor with a nonconductive magnetic bead, and then applying a power source to the continuous conductor across the nonconductive magnetic bead. The nonconductive magnetic bead creates a driving discontinuity without requiring a break or gap in the conductor. The power source may be connected or applied to the continuous conductor using a variety of preferably shielded configurations, including a coaxial or twin-axial inset or offset feed, a triaxial inset feed, or a diaxial offset feed. A second nonconductive magnetic bead may be positioned to surround a second portion of the continuous conductor to effectively create two nearly equal length dipole antenna sections on either side of the first nonconductive magnetic bead. The nonconductive magnetic beads may be comprised of various nonconductive magnetic materials, and preformed for installation around the conductor, or injected around the conductor in subsurface applications.

Abstract: A wideband antenna for receiving digital television signals includes a substrate, a radiating plate, a first radiating element, and a second radiating element. The radiating plate is formed on the substrate and the radiating plate has a first radiating area, a second radiating area and a slit formed between the first and the second radiating areas. The first and the second radiating elements are pivotedly connected to the radiating plate. The first radiating element and the second radiating element are constructed as a dipole antenna structure of the antenna so as to excite a first resonant mode. The radiating plate also acts as a matching circuit thereon so as to excite a second resonant mode. The center frequency of the second resonant mode is shifted toward the center frequency of the first resonant mode with the incorporation of the radiating plate so that the antenna has a wideband characteristic.

Abstract: A dual-band diversity antenna includes a ground plane and a main antenna system coupled to the ground plane, the main antenna system being a dipole having a primary dipole axis directed along the longitudinal axis of the wireless communication device, and a diversity antenna system coupled to the ground plane, the diversity antenna system being a monopole having an primary axis directed along the longitudinal axis of the wireless communication device.

Abstract: A dipole antenna includes interconnected first and second grounding portions, first and second connecting portions bending respectively from the first and second grounding portions in a substantially same direction, first and second extending portions extending respectively from the first connecting portion, and third and fourth extending portions extending respectively from the second connecting portion. The second extending portion is disposed closer to the first grounding portion than the first extending portion. The fourth extending portion is disposed closer to the second grounding portion than the third extending portion.

Abstract: A symmetrical printed meander dipole antenna includes a dielectric board including a ground plane; a first antenna trace line disposed on a first portion of the dielectric board and in electrical contact with the dielectric board, the first antenna trace line including a plurality of first vertical meandered traces; a second antenna trace line disposed on a second portion of the dielectric board and in electrical contact with the dielectric board, the second antenna trace line including a plurality second vertical meandered traces, wherein the first and second plurality of vertical meandered traces are symmetrical to each other; and an inductor in contact with the first and second antenna trace lines for tuning the impedance of the symmetrical printed meander dipole antenna.

Abstract: An antenna for a wireless IC device having improved energy transfer efficiency with a wireless IC, and a wireless IC device equipped with the antenna are constructed such that the antenna includes a coil pattern and spiral coupling patterns provided at the ends of the coil pattern and disposed so as to face each other. A coupling module including a wireless IC chip and a feeder circuit substrate including a feeder circuit arranged to be coupled to the wireless IC chip is mounted on the coupling pattern so as to define a wireless IC device. The coil pattern is an open type coil pattern. The coupling patterns are arranged close to each other to define a single LC resonator. Thus, energy is concentrated in the coupling patterns, thereby improving the energy transfer efficiency between the antenna and the wireless IC chip.

Abstract: A microwave antenna assembly is disclosed. The antenna assembly includes a feedline having an inner conductor, an outer conductor and an inner insulator disposed therebetween and a radiating portion including a dipole antenna coupled to the feedline and a trocar coupled to the dipole antenna at a distal end thereof. The antenna assembly also includes a slidable outer jacket disposed about the radiating portion and the feedline. The slidable outer jacket being configured to slide about at least one of the radiating portion and the feedline from a closed configuration, in which the slidable outer jacket is mated with the trocar and a retracted configuration, in which the slidable outer jacket is retracted in a proximally exposing at least a portion the radiating portion.

Abstract: An biconical antenna assembly including a pair of conductors each having a plurality of radiating conductors. One of the conductors defines a cone shape and radiating conductors extending to define a generally conical form. The other conductor defines a cylindrical shape and radiating conductors extend to define another generally conical form. The conical forms are defined by a pair of sheet conductors and radiating conductors generally divergent about a center point or axis. A feed point is defined generally at the center point. Multiple RF chokes can be provided on the radiating conductors to optimize performance of the antenna over a predetermined frequency range.

Abstract: Systems and methods for providing an antenna enabling hemispherical coverage are disclosed. The system includes a conductive enclosure having an open portion and a closed portion. The system further includes a pair of perpendicularly-disposed dipole antennas. Each antenna of the perpendicularly-disposed dipole antennas includes a pair of conductors extending to a pair of tips disposed outside of the open portion of the conductive enclosure. The system further includes a hybrid coupler having a pair of output terminals coupled to each pair of conductors of each antenna of the perpendicularly-disposed dipole antennas. The hybrid coupler is configured to apply signals of equal magnitude to the each antenna of the perpendicularly-disposed dipole antennas that differ in phase by ninety degrees.

Abstract: An example antenna device includes a conductive ground plane and first and second antenna elements connected to the conductive ground plane through first and second feeding points, respectively. Directivities of the first and second antenna elements are arranged to be approximately perpendicular to each other. A phase adjusting circuit is configured to provide a phase difference of approximately 180 degrees between first and second received signals by the first and second antenna elements, respectively and a combining circuit is configured to combine the first and second received signals having a phase difference of approximately 180 degrees therebetween to obtain a combined signal. A radio unit is configured to process the combined signal.

Abstract: An apparatus includes a sensor that receives a first electrical signal and provides a second electrical signal in response to the first electrical signal. The second electrical signal is based on at least one parameter monitored by the sensor. The apparatus also includes an antenna that converts first wireless signals into the first electrical signal and that converts the second electrical signal into second wireless signals. The antenna includes a substrate, conductive traces, and conductive interconnects. The conductive traces are formed on first and second surfaces of the substrate. The conductive interconnects couple the conductive traces, and the conductive interconnects and the conductive traces form at least one helical arm of the antenna. The conductive traces could be formed in various ways, such as by etching or direct printing. The conductive interconnects could also be formed in various ways, such as by filling vias in the substrate or direct printing.

Abstract: A multi-feed dipole antenna and method. Provides a volumetrically efficient antenna with wide radiation pattern bandwidth and wide impedance bandwidth that are relatively independent. Driving the antenna at multiple locations provides for a half wavelength dipole antenna with a wider frequency range than any other known fat dipole of similar volume. The apparatus is constructed from brass or any other suitable metal without requiring dielectric loading and without requiring direct coupling on the outside of the tubes. The apparatus utilizes a parasitic center tube with two end tubes that are driven by a collinearly mounted metal rod that is driven from the midpoint. Insulators hold the parasitic tube to the end tubes. The parasitic tube allows for induced currents to flow on the surface of the tube which allow for operation of the dipole over a wide frequency range.

Abstract: An RFID tag having a tag antenna and an LSI chip, comprising: a power-supply pattern on which the LSI chip is mounted; a patch antenna that functions as the tag antenna; and a high-frequency connection section that makes a high-frequency connection between the power-supply pattern and the patch antenna. The high-frequency connection section is formed, for example, by forming a slot in the patch antenna, layering one end of a small dipole antenna that functions as the power-supply pattern over the slot so that it crosses over the slot, and supplying power from the small dipole antenna to the patch antenna.

Abstract: A crossed dual tag includes two tags each of which comprises, on one plane, a dipole antenna formed with conductors, a feeding part to which an IC chip is connected at the center of the dipole antenna, and a loop-shaped inductance part that is formed between the dipoles of the dipole antenna and connected to the dipoles of the dipole antenna in parallel with respect to the feeding part. The two tags are crossed at right angles, and stacked to contact as closely as possible so that the loops of the inductance parts overlap as wide as possible. A reader/writer of an RFID system sequentially switches the surface of a circular polarized wave of a wireless signal between forward and backward directions, and reads information written to a user memory area from the tag that responds more strongly.

Abstract: A method for modulating the impedance of an antenna circuit supplying pump signals to a charge pump comprising at least one first pump stage and one last pump stage, the last pump stage supplying a continuous voltage. The output of the first pump stage is short-circuited by means of a switch and the last pump stage goes on pumping electric charges and supplying the continuous voltage. Application in particular to RFID passive transponders.

Abstract: A security tag incorporating a hybrid clamp that combines an attachment clamp with an RFID component. The attachment clamp is used to secure an item, such as an article of clothing, to the tag. The RFID component, e.g., an RFID antenna, transmits data signals to an RFID reader where the data signals are encoded with information stored about the security tag. By combining the attachment features and RFID features of the security tag in one hybrid clamp, more tag space can be freed up for other components and manufacturing cost savings can be realized.

Abstract: An antenna system is disclosed that provides a directional radiation field. The antenna system includes at least two monopole antennas, each of which provides a differential connector. Each differential connector is associated with a signal having a different phase such that a radiation field associated with said antenna system is other than a radiation field that would exist if each differential connector were associated with the signal having the same phase.

Abstract: A security tag and system for securing objects, the system and security tag includes an acousto magnetic (“AM”) electronic article surveillance (“EAS”) component that has a housing with a defined surface area. The housing of the EAS component includes a perimeter boundary that defines an EAS component plane. The system and security tag further include a radio frequency identification (“RFID”) component that includes an integrated circuit and a dipole antenna defining an RFID component plane that is substantially coplanar with the EAS component plane. The integrated circuit and the dipole antenna are positioned externally along the perimeter boundary of the EAS component.

Abstract: Disclosed is a multiband jamming antenna for use with RF jamming systems. An exemplary embodiment of the antenna comprises high-band, medium-band and low-band radiating structures arranged in a collinear manner. The three radiating structures are operable in three respective overlapping frequency bands. In the exemplary embodiment, the high-band radiating structure comprises a hybrid biconical/dipole antenna disposed at an upper end of the antenna. The medium-band radiating structure is collinearly coupled to the high-band radiating structure and comprises upper and lower dipole elements that are tuned using a dual section coaxial transformer. The low-band radiating structure is collinearly coupled to the medium-band radiating structure. The low-band radiating structure comprises a coaxial Ruthroff UNUN transformer that is coupled to the low-band radiating structure, and a feeder cable that connected to the coaxial Ruthroff UNUN transformer, and the high-band, medium-band, and low-band radiating structures.

Abstract: An antenna that includes a first plane, a second plane spaced apart from the first plane, a first radiating surface, positioned substantially on the first plane, to act as a poise, a second radiating surface to act as a counterpoise, and an end-feed microstrip positioned on the second plane, wherein the first radiating surface and the second radiating surface are electromagnetically coupled to the end-feed microstrip.

Abstract: An antenna coupled to a wireless communication device is comprised of a conductive component, such as a series of conductive elements, that forms a conductor if placed under a threshold force. The conductor is coupled to the wireless communication device so that the wireless communication device is capable of communicating at an operating frequency defined by the length and construction of the conductor. By communicating using the conductor as an antenna, the wireless communication device may provide an indication of force to an interrogation reader. Furthermore, a conductive support element, such as a tuning ring, may be used for communication as well as coupling the conductive component to the wireless communication device. Multiple conductive components may be coupled to the wireless communication device for communicating at multiple frequencies if placed under multiple threshold forces.

Abstract: An improved antenna array has at least one first radiator device and at least one second radiator device and at least one third radiator device. The at least one first radiator device and the at least one second radiator device and the at least one third radiator device are arranged consecutively. The at least one dual-polarized radiator device radiates in both polarization planes (P1, P2). The at least one first radiator device radiates only in one polarization plane (P1 or P2). The at least one third radiator device radiates in one polarization plane (P2 or P1), which is aligned perpendicular to the polarization plane (P1 or P2) in which the at least one first radiator device radiates.

Abstract: The invention relates to a portable compact antenna formed from a first dipole type radiating element operating in a first frequency band and comprising a first and at least one second conductive arm, differentially supplied, the first arm, referred to as cold arm, forming at least one cover for an electronic card and the second arm, referred to as hot arm, being linked to the cold arm at the level of the supply. According to the invention, the hot arm comprises at least one slot resonating in a second frequency band such as the GSM band.

Abstract: An antenna employed in a base station is provided. The antenna comprises a feed antenna configured to feed power, and a superstrate configured to be located on an upper portion of the feed antenna and have a conductive pattern for increasing a gain and beam width control on a surface of a dielectric substrate. Accordingly, gain increase and beam width control of the antenna can be simultaneously realized.

Abstract: A method and apparatus for providing wireless communication and optionally power to the interior of a housing assembly is disclosed. In one embodiment, an antenna is molded within a gasket material, such as silicon, so as to be completely encapsulated. The gasket preferably includes at least one support arm, which holds the antenna toward the middle of the housing, so as to minimize interference from the metal housing. In further embodiments, an inductive coil is encapsulated in the gasket. An alternating current is passed through this coil to create a changing magnetic field, which can then be used to create electrical power in physically separate components, such as filtering elements. In certain embodiments, multiple loops are molded to correspond to multiple filtering elements within the housing.

Abstract: In one embodiment, an integrated antenna and display shade for a wireless portable control unit is provided which includes a stowable display shade having two side panels and a front panel between the two side panels. Each of the two side panels are foldably connected to opposing edges of the front panel so as to be capable of folding into planes generally parallel with a plane of the front panel when stowed and into planes generally orthogonal to the plane of the front panel when deployed to shade a visual display. The front panel includes an active antenna and each of the side panels include a parasitic antenna.

Abstract: The present disclosure relates to an RFID tag, more particularly to, a UHF band RFID tag antenna using a double-open ends coupler; wherein the structure thereof is using a half wavelength dipole antenna with a double-open ends coupler mutually coupled to each other, and the RFID chip is disposed upon the coupler, and the coupler is designed to be double-open ends structure so as to, rather than prior arts, enhance the radiation without compromising the impedance match between the antenna and the chip.

Abstract: A radiating element made from a conductive-nonwoven web is incorporated into a signal emitting apparatus. The signal emitting apparatus, for instance, may comprise an RFID tag. The conductive-nonwoven web contains, in one embodiment, conductive fibers combined with pulp fibers. The conductive fibers may comprise carbon fibers. The nonwoven web may be made using a conventional paper-making process. The resulting conductive web is not only well suited for use as an antenna, but is also relatively inexpensive to manufacture and can be easily incorporated into numerous products.

Abstract: According to one embodiment of the present invention, a dipole antenna capable of supporting multi-band communications, includes a first portion of the antenna in a folded structure, a second portion of the antenna that includes a first coupling pad and a second coupling pad physically separated by a distance, and a current path along the first portion of the antenna and the second portion of the antenna, wherein a first portion of the current path that includes the first coupling pad and the second coupling pad is configured to introduce a slow wave effect if electric current flows through the first portion of the current path.

Abstract: A film antenna comprises a base film formed of an insulating material; and first and second antenna elements of film-like electric conductors formed on the base film, wherein each of the first and second antenna elements is a planar shape in which two end faces from a feed point to a tip have two different lengths or a planar shape in which an end face and a diagonal line from a feed point to a tip have two different lengths, a core wire of a coaxial cable is connected to the first antenna element at the feed point, an external conductor of the coaxial cable is connected to the second antenna element at the feed point, and the first and second antenna elements have an area as a capacitor for performing impedance matching.

Abstract: An electromagnetic wave measuring method is provided that is capable of performing high-precision measurement in a shorter time and in a greater variety of frequency bands than heretofore with a comparatively simple configuration. A plate-like antenna (13) of which the outline shape of an opposed surface opposite a measured object (5) is similar to the outline shape of an opposed surface of the measured object (5) is brought close to the measured object (5), and an electromagnetic wave from the measured object (5) is measured based on the frequency spectrum of a received signal received by the plate-like antenna (13).

Abstract: The present invention relates to a portable compact antenna formed from a first dipole type element operating in a first frequency band and comprising a first and at least one second conductive arm, differentially supplied, the first arm or cold arm forming at least one cover for an electronic card and the second arm or hot arm being constituted by a U-shaped conductive element realized on an insulating substrate. Further, a radiating element with bends is realized between the branches of the U-shaped element and is dimensioned to operate in a second frequency band.

Abstract: A method for mounting multiple small RFID chips onto larger antenna. The chips are mechanically aligned with an interdigitated gap at the feed point of the antenna by electrostatic or magnetic techniques. In an alternate embodiment RF field coupling between the chips and the antenna is employed.

Abstract: A ground station antenna includes a LNB with at least one dipole, a feed horn, a waveguide between the LNB and the feed horn, and a rotation mechanism. By rotating a portion of the waveguide, the polarization of an electromagnetic wave propagating between the LNB and a satellite is transformed to match the polarization to (one of) the dipole(s) and to an antenna on the satellite. Another ground station antenna includes a main waveguide, two mutually orthogonal branch waveguides, a coupling mechanism for coupling two orthogonal antenna dipoles to the proximal end of the waveguide, and a transformation mechanism that transforms the polarization of an electromagnetic wave propagating between the branch waveguides and a satellite via the antenna dipoles to match the polarization to one of the branch waveguides and to an antenna on the satellite.

Abstract: An electromagnetic band-gap structure includes a circuit board, a ground plane and a plurality of electromagnetic band-gap units. The circuit board includes a first side and a second surface, and the ground plane disposed on the first side. The plurality of electromagnetic band-gap units are located on both the first surface and the second surface and connected to each other along an edge of the ground plane. Every electromagnetic band-gap unit includes a first strip line, a second strip line and a via. The first strip line is located on the first side, including a first relative long strip line and a first relative short strip line connected to the ground. The second strip line is located on the second side. The second strip line is connected to the first strip line of the adjacent electromagnetic band-gap unit through the via.

Abstract: An antenna for use with an RFID device reader includes a metallic plate and multiple antenna elements attached to the metallic plate. The antenna elements may consist of two prongs each, with the prongs of each element arrayed in a diagonal configuration, and with the two prongs forming an X-shape. Each of the prongs may include a pair of L-shape prong parts that are coupled together by an electrical element connecting the corners of the L-shape prong parts. The distal ends of all of the prong parts of the antenna elements may together form a substantially square shape. Each of the antenna elements may be coupled to a single conductor, for connection to an RFID reader. The connection may be through a suitable standard coupling, such as a coaxial cable with a suitable connector.

Abstract: An integrated circuit (IC) antenna structure includes a die, a package substrate, an antenna element, a ground plane, and a transmission line. The antenna element is on the die and/or package substrate and has a length in the range of approximately 1¼ millimeters to 2½ millimeters. The ground plane has a surface area larger than a surface area of the antenna element. The transmission line is on the die and/or the package substrate and includes a first line and a second line, wherein at least the first line is electrically coupled to the antenna element.

Abstract: A planar antenna with an isotropic radiation pattern is provided. The planar antenna includes a substrate, a dipole antenna, a microstrip line set, and a channel selection module. The dipole antenna is disposed on a first surface of the substrate, and the microstrip line set and the channel selection module are disposed on a second surface of the substrate. A first microstrip line and a second microstrip line of the microstrip line set are spirally extended along two opposite rotation trails on a vertical projection plane to form a high-frequency path with the dipole antenna. The planar antenna controls the on/off state of the channel selection module so that a low-frequency path is formed when the dipole antenna is connected to a first line and a second line. A plurality of channels having different operating frequencies is respectively generated within the high-frequency path and the low-frequency path.

Abstract: Ultra-wideband (UWB) antennas for use with UWB transmitters and UWB receivers, that are useful, e.g., for UWB communications.

Abstract: An integrated resonator and dipole for generation of high power directional RF energy.

Abstract: As described herein vascular anchoring systems are used to position an implant in a vascular area such as a bifurcated vasculature with relatively high fluid flow, for instance, in an area of a pulmonary artery with associated left and right pulmonary arteries. Implementations include an anchoring trunk member having a first anchoring trunk section and a second anchoring trunk section. Further implementations include a first anchoring branch member extending from the anchoring trunk member. Still further implementations include a second anchoring branch member extending from the anchoring trunk member.

Abstract: An antenna assembly is provided for mounting on a predetermined support structure positioned on a surface, the support structure having a peripheral edge at an elevated position above the surface. The antenna assembly includes an antenna and a support for supporting the antenna at an elevated position above the surface when mounted on the support structure. The support is adapted to support the antenna at a sufficient height above the surface to provide a direct path for electromagnetic radiation at least a portion of the antenna to a position on the surface external of the peripheral edge of less than or equal to about 4.5 meters from substantially any point on the peripheral edge, or to a position on the surface at a point positioned 3 meters from the front of the support structure and 3 meters from a side of the support structure.

Abstract: A full-wave di-patch antenna having two half-wave patch antennas located such that the feed points are facing one another and are brought out to a balanced transmission line having two conductors of microstrip feed lines. The phase of the current and the voltage is inverted 180 degrees between the two patches relative to the mechanical structure. The physical spacing of the two patches from center-to-center is one guide wavelength long. The two patches are disposed on a dielectric substrate which is in turn disposed over a ground plane. The two patches can take any of a number of shapes including a rectangle.

Abstract: A directional communication antenna comprising a conductive member connected to transmitter power amplifiers or receiver input amplifiers is provided. The simplest antenna form includes a conductor connected to a pair of transmitter power amplifiers or a pair of receiver input amplifiers. Antenna in the transmitter mode is connected to a pair of power amplifiers sending synchronized rf signals to the ends of a conductor. Applied signals travel and collide on antenna where they are converted into the free-space wave. In the receiving mode, two or more receiver input amplifiers are connected to detect and amplify incoming signals. The incoming signals are then electronically added for improved sensitivity.