Abstract: Described herein are techniques related to near field coupling and wireless power transfers. In an implementation, a portable device may include full metallic chassis devices. The full metallic chassis devices may include a keyboard and/or trackpad that include a plastic keycap. The plastic keycap may integrate a booster component to increase near field communications (NFC) range of a coil antenna that is integrated onto a surface plane above a circuit board of a switch that is connected to the plastic keycap. In an implementation, a ferrite material is inserted between the coil antenna and the circuit board to protect the coil antenna from Eddy currents that may be induced on a metallic chassis that lie underneath the circuit board.

Abstract: An RFID system includes an RFID antenna assembly configured to be positioned on a product module assembly of a processing system. The product module assembly is configured to releasably engage at least one product container. A first RFID tag assembly configured to be positioned on the at least one product container. The at least one product container is configured to position the first RFID tag assembly within a detection zone of the RFID antenna assembly whenever the product module assembly releasably engages the at least one product container.

Abstract: This invention provides an antenna structure, especially relates to an antenna structure in hand-held device. The antenna structure of the present invention is formed by a continue transmission line, and forming an annular shape. It is featured that the antenna structure has two end points, the first end point is a floating point, and the second end point connected to a ground. A signal input point is connected to the continue transmission line for inputting an antenna signal into the antenna structure. The signal input point keeps two-thirds of wavelength distance from the second end point. According to present invention, a small antenna structure is provided and fitting in with operation in ultra wide bandwidth frequency, furthermore the multi-frequency signal can be transceived. The antenna structure has lower signal intensity of high order harmonic signals, therefore the structure can reduce the antenna signal interferences with the high order harmonic signals.

Abstract: An antenna and a communication device thereof are provided. The antenna includes at least one ground and at least one radiating portion. The ground is disposed on a dielectric substrate, and the radiating portion includes at least one signal source and at least one closed conductor loop. The closed conductor loop has a first coupling conductor portion and a second coupling conductor portion, and the closed conductor loop has a plurality of bending portions to form a three-dimensional structure, and a first coupling gap is formed between the first and the second coupling conductor portions. The closed conductor loop further has a feeding portion and a short-circuit portion to form a second coupling gap between them. The feeding portion is electrically connected or coupled to the at least one signal source, and the short-circuit portion is electrically connected or coupled to the ground.

Abstract: According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes one or more tapered loop antenna elements.

Abstract: The multiple polarization loop antenna includes a circularly polarized loop antenna, which may utilize a loop electrical conductor and two signal feedpoints along the loop electrical conductor separated by one quarter of the length of the loop circumference for a signal feedpoint phase angle input difference of 90 degrees. Each of the signal feedpoints may include a loop discontinuity, so that at least one signal source coupled thereto provides circular polarization from the loop electrical conductor. The circularly polarized loop antenna provides an increase in gain and decrease in size relative to the dipole turnstile. It can provide two orthogonal polarizations from two isolated ports, and the polarizations may be dual linear or dual circular.

Abstract: An improved method of loop antenna and improved loop antenna thereof are provided, the method is used to generate an antenna resonant frequency for a conformed specific communication by modifying a resonant wavelength of a basic loop antenna. The improved method of loop antenna includes the following steps: connecting a first antenna radiator to a resonant point of the basic loop antenna electrically, and using an additional length from the connected first antenna radiator additional length to increase the resonant wavelength of the basic loop antenna, in order to generate an antenna resonant frequency conformed to the specific communication system.

Abstract: An antenna device has a first antenna branch and a second antenna branch. Both the first and the second antenna branches have the shape of a non-closed conductor loop and are connected to each other to form a cohesive conductor loop. The respective loop ends are disposed parallel to each other at a distance directed perpendicular (z axis) to the course of the loop. The antenna device has two connections that are disposed in the center section of the cohesive conductor loop at a distance from each other.

Abstract: Provided are an antenna and a mobile terminal including the antenna. The antenna includes a loop antenna, a solenoid, and a plurality of connections. The loop antenna is installed on a mobile terminal. The solenoid is connected in parallel to the loop antenna, and receives power. The connections connect the loop antenna to the solenoid. Accordingly, the degree of freedom of an antenna shape and a recognition distance of the antenna are improved.

Abstract: A broad-band, multi-band antenna. The antenna includes a ground terminal and a feed terminal, an elongated inductor, a first inductive element electrically coupled between the ground terminal and a first extremity of the elongated inductor, a capacitive element in parallel connection with the first inductive element, and a second inductive element electrically coupled between a second extremity of the elongated inductor and the feed terminal.

Abstract: A multi-band antenna array for use in wireless communication devices with up to three simultaneous operating modes with improved antenna efficiency and reduced antenna coupling across a broad range of operative frequency bands with reduced physical size is described. The multi-band antenna array includes at least two loop antenna elements, each of which is orthogonal to, and arranged in an embedded manner, relative to each other. Each loop antenna in the multi-band antenna array may include a corresponding tuning element for tuning to a desired resonant frequency, and be comprised of an upper and lower half with the corresponding tuning element coupled therebetween.

Abstract: A radio frequency identification (RFID) antenna exhibiting a multiple resonance is disclosed. In one exemplary embodiment, a dipole antenna and a loop antenna are disposed upon a substrate and have dimensions and orientation to exhibit the multiple resonance. The dipole antenna may exhibit a first dipole section having a first length and second dipole section having a second length. The loop antenna may be disposed in a region of the dipole antenna. The ratio of the perimeter of the loop antenna to the sum of the lengths of the dipole sections may be selected to exhibit the multiple resonance.

Abstract: A container having a radio frequency identification tag attached thereto by means of a stud or a radio frequency identification tag retainer projecting from the exterior surface of the container. The container can be used to contain medical products, and the container can be of various types, such as, for example, a bottle, a micro-well plate, a cartridge, a tube. In one embodiment, the container has a radio frequency identification tag affixed thereto. The container comprises a mouth, a neck, a body, and a bottom. The container can also have a closure, a septum, or an adapter for other components of an automated clinical analyzer. The neck is capable of receiving a closure. A stud or a radio frequency identification tag retainer projecting from the bottom of the container, preferably the center of the bottom of the container, serves to retain the radio frequency identification during the attachment of the radio frequency identification tag to the container.

Abstract: An antenna device having a magnetic core to be surface-mounted on a circuit substrate includes a pair of coil portions spaced apart from each other at a predetermined interval. The coil portions are connected by a connecting conductor. An end of the magnetic core includes a curved or bent portion curved toward the circuit substrate. This structure defines an RFID antenna device having an improved receiving sensitivity that can be surface-mounted without increasing the thickness of a casing of a mobile electronic device.

Abstract: A loop antenna includes a parasitic element arranged at a position almost concentric to a loop element and having an opening portion smaller than the half perimeter of the loop element at a position opposite to the feeding point of the loop element.

Abstract: Location determination is performed using a transmitter including an elongated generally planar loop antenna defining an elongation axis. The elongation axis is positioned along at least a portion of a path. A magnetic field is then generated which approximates a dipole field. Certain characteristics of the magnetic field are then determined at a receiving position radially displaced from the antenna elongation axis. Using the determined certain characteristics, at least one orientation parameter is established which characterizes a positional relationship between the receiving position and the antenna on the path. The magnetic field may be transmitted as a monotone single phase signal. The orientation parameter may be a radial offset and/or an angular orientation between the receiving position and the antenna on the path. The antenna of the transmitter may be inserted into a first borehole to transmit the magnetic field to a receiver inserted into a second borehole.

Abstract: An antenna device includes a loop-shaped element radiating a radio wave of at least wavelength ? and having an electrical length of m×?; a first power feeder exciting the loop-shaped element via voltage or current coupling by using a first electrical signal for radiating the radio wave; and a second power feeder exciting the loop-shaped element via a coupling method that is the same type as the first power feeder by using a second electrical signal for radiating a radio wave of wavelength ?/(2×p?1) at a portion that becomes a node of a standing wave that is formed with the first power feeder as an anti-node and that is based on the first electrical signal, here, “m” and “p” are natural numbers.

Abstract: A radiation section of an antenna includes a first connection portion and a second connection portion, and is in a loop form having a plate shape. A switch unit couples the second connection portion to the first connection portion e.g. according to a signal input from the outside. Further, the switch unit couples the second connection portion e.g. to ground formed on a reverse side of a substrate according to a signal input from the outside.

Abstract: Disclosed is a Radio Frequency Identification (RFID) tag-embedded casino chip. The RFID tag-embedded casino chip includes an Integrated Circuit (IC) and an antennae connected to the IC. The RFID tag has a frequency which is equal to or greater than 20 MHz and is equal to or less than 25 MHz.

Abstract: A chip carrier for contacting with a chip and an antenna is disposed on an antenna substrate. The chip carrier features a carrier substrate having a chip contact arrangement located at a distance from longitudinal ends of the carrier substrate for electrical contacting with a chip. The carrier substrate includes two antenna contact surfaces having the chip contact arrangement therebetween for electrical contacting with the antenna. The chip contact arrangement and the antenna contact surfaces are located on an application surface of the chip carrier. At least one insulation surface-is formed on the application surface between the chip contact arrangement and the antenna contact surfaces.

Abstract: An internal printed antenna is revealed. The internal printed antenna includes a dielectric substrate, a ground plane, a metal loop radiating portion, and a microstrip feed line. The metal loop radiating portion includes a plurality of bends and a gap area is formed between adjacent bends. Two short circuit parts are arranged at the gap area.

Abstract: A contactless device having an energy antenna configured to transmit/receive an energy signal; and a data antenna configured to transmit a data signal. Also, a method for transmitting a contactless signal including transmitting/receiving an energy signal from an energy antenna of a contactless device; and transmitting a data signal from a data antenna of the contactless device.

Abstract: Embodiments provide multi-band, compound loop antennas (multi-band antennas). Embodiments of the multi-band antennas produce signals at two or more frequency bands, with the two or more frequency bands capable of being adjusted and tuned independently of each other. Embodiments of a multi-band antenna are comprised of at least one electric field radiator and at least one monopole formed out of the magnetic loop. At a particular frequency, the at least one electric field radiator in combination with various portions of the magnetic loop resonate and radiate an electric field at a first frequency band. At yet another particular frequency, the at least one monopole in combination with various portions of the magnetic loop resonate and radiate an electric field at a second frequency band. The shape of the magnetic loop can be tuned to increase the radiation efficiency at particular frequency bands and enable the multi-band operation of antenna embodiments.

Abstract: Aerial for the reception of circularly polarized satellite radio signals comprising at least one substantially horizontally oriented conductor loop arranged over a conductive base surface, having an assembly for electromagnetic excitation of the conductor loop connected to an aerial connection. The conductor loop is designed as a loop emitter by a polygonal or circularly closed loop extending in a horizontal plane of height h above the conductive base surface. The loop emitter forms a resonant structure and is electrically excited by the electromagnetic exciter in such a way that on the loop the current distribution of a travelling line wave occurs in one direction of rotation only, of which the phase difference over one revolution is M*2?, where M is an integer and has at least a value of M=2.

Abstract: An electric emitter for vertically polarised wireless signals for a communication service with a narrow frequency bandwidth around a frequency fo with free-space wavelength ?o in the gigahertz range, comprising at least one substantially horizontally oriented conductor loop arranged above a conductive base area, with an emitter infeed point for electromagnetic excitation of the loop relative to the base area. The loop is formed by a circularly closed ring conductor running in a substantially horizontal plane with a height h of less than ?o/6 over the base area. Distributed over the periphery of the ring conductor are at least three vertical emitters electromagnetically coupled to the ring conductor coupling points and running to the base area, wherein at least two of the emitters are electromagnetically coupled to the base area at earth terminal points, and a vertical emitter is excited via the emitter infeed point at the lower end thereof.

Abstract: Provided is a loop antenna. The loop antenna includes a first antenna element embodied as a coaxial cable, a second antenna element embodied as a line and connected to one end of the first antenna element in series, a third antenna eLement embodied as a line, having one end connected to a ground plane and the other end connected to the other end of the first antenna element in series, and a power feeding cable for supplying power to the second antenna element.

Abstract: Radiowave environment data correction that uses the data measurement results obtained at measuring points in a base station peripheral area provided for a wireless communications system, is achieved accurately at a limited number of measuring points. A radiowave environment data correcting system includes correction data determining means that determines correction data for sub-areas, the sub-areas being regions into which an assessment area is divided, on the basis of data measurement results obtained at measuring points belonging to the sub-areas, wherein division into the area is based on an area usage division that is a division predefined according to a particular layout of objects or spaces in the assessment area.

Abstract: A magnetic field focusing assembly includes a magnetic field generating device configured to generate a magnetic field, and a split ring resonator assembly configured to be magnetically coupled to the magnetic field generating device and configured to focus the magnetic field produced by the magnetic field generating device.

Abstract: An antenna for receiving circularly polarized satellite radio signals has a conductive base surface and at least one a conductor loop oriented horizontally above the base surface by a height h. The conductor loop is configured as a polygonal or circular closed ring line radiator The ring line radiator forms a resonant structure that is electrically excited so that the current distribution of a running line wave in a single rotation direction occurs on the ring line, wherein the phase difference of which, over one revolution, amounts to essentially 2?. A vertical radiator extends between the conductive base surface and the circumference of the ring line radiator. The height h is smaller than ? of the free-space wavelength ?.

Abstract: An antenna includes a metal member, an antenna, and a capacitor. The metal member includes a plurality of sidewalls connecting with each other. The antenna includes a fixing end and a free end, the fixing end is fixed to the metal member. The capacitor connects with the metal member and the free end of the antenna.

Abstract: An electric power communication device includes a plurality of directional antennas, a plurality of electric power communication portions, and an electric power communication control portion. Each of the plurality of directional antennas has directionality, and each of the plurality of electric power communication portions has directionality. The electric power communication control portion controls which of the plurality of electric power communication portions is used for electric power communication with a partner communication device, in accordance with the directional antenna, among the plurality of directional antennas, for which receiving of an incoming wireless signal that was transmitted from the partner communication device has been detected.

Abstract: An antenna structure, used for being fed with a signal, includes a grounding portion, a radiation portion, and a frequency adjusting portion. The radiation portion has a loop segment, a high frequency segment, and a low frequency segment. The loop segment has a feeding sub-segment adjacent to the grounding portion and used for being fed with the signal. The high and low frequency segments are extended from opposite ends of the loop segment away from each other. The frequency adjusting portion is connected to the loop segment and the grounding portion. A high frequency dual-path is formed from a feeding point of the feeding sub-segment and extends along the loop segment in two different directions to the high frequency segment. A low frequency dual-path is formed from the feeding point and extends along the loop segment in two different directions to the low frequency segment.

Abstract: An antenna for reception of satellite radio signals emitted circularly in the direction of rotation of polarization has a conductive base surface, an antenna connection point, an antenna element connection point and at least two antenna elements. The first antenna is a conductor loop disposed parallel to the base surface. The loop antenna has capacitors disposed along the conductor loop. The antenna connection point is coupled to an interruption of the loop antenna. This connection point feeds a ring current into the loop antenna. At least one additional antenna element extends between the antenna element connection point and the loop antenna. The additional antenna element has a polarization orientated perpendicular to the polarization of the loop antenna and an orthogonal phase in the far field.

Abstract: An RFID tag includes a base having at least one fold formed therein. An integrated circuit is formed on the base. At least one antenna segment extends from the integrated circuit and crosses the fold. When the fold is creased, a portion of the antenna segment on one side of the fold is aligned to be orthogonal to a portion of the antenna segment on the other side of the fold.

Abstract: A protective circuit module including: an insulating substrate including a plurality of layers; first and second printed circuit patterns disposed between the plurality of layers of the insulating substrate; a loop antenna electrically coupled to the first printed circuit pattern; and a wireless charging portion spaced apart from the loop antenna and electrically coupled to the second printed circuit pattern, wherein ends of the loop antenna and ends of the wireless charging portion are between the plurality of layers of the insulating substrate.

Abstract: The invention relates to an inductive antenna formed from at least two pairs of segments (32, 34) geometrically butted together and each comprising first (322, 342) and second (324, 344) parallel conductors insulated from each other, each pair having, at each end, a single terminal for the electrical connection of its first conductor to that of the neighbouring pair, in which said pairs are of a first type (3), in which the conductors are interrupted approximately at their mid-points so as to define the two segments, the first (respectively second) conductor of one segment being connected to the second (respectively first) conductor of the other segment of the pair, or of a second type, in which the first conductor is interrupted approximately at its mid-point so as to define the two segments, the second conductor not being interrupted.

Abstract: A dielectric base of an antenna element has a first external terminal at a position substantially corresponding to a node of voltage-distribution distribution of a harmonic wave distributed in a feeding radiation electrode and a second external terminal at a position substantially corresponding to a node of voltage-distribution distribution of a harmonic wave distributed in a non-feeding radiation electrode. A substrate has a ground electrode and a first external-terminal electrode to which the first external terminal is connected. An extension element extends from the first external-terminal electrode so as to be separated from the ground electrode.

Abstract: A mobile wireless LAN communications device may include a portable, handheld housing, and a wireless LAN transceiver carried by the housing. A polarization diversity wireless LAN antenna may be included for cooperating with the wireless LAN transceiver to communicate over a wireless LAN. The polarization diversity wireless LAN antenna may include a first antenna element coupled to the wireless LAN transceiver having a first shape and a first polarization, and a second antenna element coupled to the wireless LAN transceiver having a second shape different from the first shape. The second antenna element may also have a second polarization different from the first polarization.

Abstract: An antenna configuration is described for high frequency (HF) or very high frequency (VHF) radars contained in a single vertical post. The radar may include a vertical dipole or monopole transmitting antenna collocated with a three-element receive antenna. The three antennas including two crossed loops and a vertical element are used in a direction-finding (DF) mode. Isolation between the three antennas produces high quality patterns useful for determining target bearings in DF mode. The single vertical post is sufficiently rigid mechanically that it may be installed along a coast without guy wires.

Abstract: A security document (1) in the form of a booklet which has a large number of sheets (11, 12, 13) connected to one another to form the booklet. A first sheet (11) of the security document has a carrier layer (20), an antenna structure (21)—arranged in a first region (41)—for RF communication and an electronic circuit (22)—connected to the antenna structure (21)—with a memory device for storing data, and a communication device—connected to the antenna structure—for communicating data stored in the memory device to a reader via a radio interface by means of the antenna structure (21). A second sheet (13) of the security document has a carrier layer (30) and one or more electrically conductive layers shaped in a second region (43) for the formation of at least one LCR resonant circuit (3).

Abstract: An antenna system includes a dielectrically-loaded loop element electromagnetically coupled to a planar element. The antenna system exhibits uniform, broadband radiation and reception patterns.

Abstract: A communication terminal in which a card antenna module is loaded into a terminal casing including an antenna is operated such that a degree of coupling between a terminal-casing-side antenna and a module-side antenna is minimized and that a module-side antenna has a desired frequency characteristic. The communication terminal includes a terminal casing including a terminal-casing-side antenna, and a card antenna module loaded into the terminal casing. The card antenna module includes a coupling coil which is disposed at a position close to the terminal-casing-side antenna and which is coupled with the terminal-casing-side antenna via a magnetic field, and a module-side antenna which is disposed at a position more distant from the terminal-casing-side antenna than the coupling coil.

Abstract: Provided are an antenna and a mobile terminal including the antenna. The antenna includes a loop antenna, a solenoid, and a plurality of connections. The loop antenna is installed on a mobile terminal. The solenoid is connected in parallel to the loop antenna, and receives power. The connections connect the loop antenna to the solenoid. Accordingly, the degree of freedom of an antenna shape and a recognition distance of the antenna are improved.

Abstract: According to various aspects, exemplary embodiments are provided of antenna assemblies. In one exemplary embodiment, an antenna assembly generally includes at least one antenna element having first and second electrical paths. The antenna assembly may also include at least one reflector element spaced-apart from the antenna element for reflecting electromagnetic waves generally towards the antenna element.

Abstract: An RFID device, and more particularly to a RFID device which can be used in both a tag mode and a reader mode. There is provided an RF antenna transmitting and receiving wireless signals; a tuning circuit as a frequency filtering circuit connected to the RF antenna; a memory storing data; and a wireless communication card including antenna connection terminals connected to the RF antenna.

Abstract: A system comprises a first sensing device, a first Sterba Curtain, and a first modulating device communicatively coupling the first sensing device to the first Sterba Curtain. The first sensing device is configured to sense at least a first parameter. The first Sterba Curtain is configured to receive at least a first incident electromagnetic wave and to selectively transmit and reflect portions of the first incident electromagnetic wave. The first modulating device is configured to selectively convey a first signal representing the first parameter by modulating at least one of a first transmitted component of the first incident electromagnetic wave and a first reflected component of the first incident electromagnetic wave.

Abstract: An RFID tag and an RFID tag using the same are disclosed, wherein the RFID tag comprises: a circuit unit arranged on a first part of a board; and a loop type antenna on a second part of the board.

Abstract: The present invention relates to an antenna device for a portable radio communication device adapted for receiving and/or transmitting radio signals in at least a first and a second operating frequency band, said antenna device comprising a half-loop radiating element, comprising a feeding portion and a grounding portion, and arranged to operate at FM frequencies. The antenna device comprises a capacitor at said feeding portion and an inductor at said grounding portion, and said half-loop radiating element is arranged to simultaneously with FM frequencies operate at frequencies at least ten times higher than FM frequencies, wherein said capacitor is arranged to short circuit said half-loop radiating element to ground for frequencies at least ten times higher than FM frequencies and said inductor is arranged to short circuit said half-loop radiating element to ground for FM frequencies.

Abstract: A non-feeding element is provided with a proximity-providing gap from a feeding element that receives RF power from a feeding point on a circuit board, and a resonant state is generated there by capacitive coupling. The non-feeding element is formed so as to resonate at a frequency different from a resonant frequency of the feeding element. The feeding element and the non-feeding element have alongside-ground-terminal extending portions formed so as to be spaced from an edge surface (a ground terminal) at one end of a ground surface formed on the circuit board and to extend in a direction along the edge surface at the one end of the ground surface.

Abstract: A magnetic field focusing assembly includes a magnetic field generating device configured to generate a magnetic field, and a split ring resonator assembly configured to be magnetically coupled to the magnetic field generating device and configured to focus the magnetic field produced by the magnetic field generating device.