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: A magnetic antenna includes a plurality of magnetic layers, coil conductor patterns wound around the magnetic layers about a winding axis in a direction perpendicular or substantially perpendicular to a stacking direction of the magnetic layers, a dielectric layer stacked on an outer layer of the magnetic layers, and a conducting pattern provided with the dielectric layer and coupled with a ground. The conducting pattern and the coil conductor patterns disposed along the outer layer are arranged such that at least a portion of the coil conductor patterns faces the conducting pattern and defines a stray capacitor therewith.

Abstract: A bill processing apparatus which is capable of reliably supplying information on a bill to the bill housing body side. The paper sheet processing apparatus has a bill housing part (100) being capable of housing a bill inserted from a bill insertion slot, and also a reader/writer (142) which wirelessly transmits information on the bill inserted from the bill insertion slot. The bill housing part (100) has a coil antenna (104c) which wirelessly receives the information transmitted from the reader/writer (142), and a storage part (104b) which stores the information on the bill received from the coil antenna (104c).

Abstract: There is disclosed a loop antenna for mobile handsets and other devices. The antenna comprises a dielectric substrate (23) having first and second opposed surfaces and a conductive track (24) formed on the substrate (23). A feed point (26) and a grounding point (25) are provided adjacent to each other on the first surface of the substrate (23), with the conductive track (24) extending in generally opposite directions from the feed point (26) and grounding point (25) respectively and winding around the substrate (23) to the second surface and passing along a path generally opposite to the path taken on the first surface of the dielectric substrate (23). The conductive tracks (24) then connect to respective sides of a conductive arrangement (27) that extends into a central part of a loop formed by the conductive track (24) on the second surface of the dielectric substrate (23). The conductive arrangement (27) comprises both inductive and capacitive elements.

Abstract: Buried object locators including an omnidirectional antenna array and a gradient array are disclosed. A locator display may include information associated with a buried object based on both omnidirectional antenna array signals and gradient antenna array signals.

Abstract: An antenna device includes an antenna coil, a magnetic sheet, and a metallic member. The antenna coil is formed on a flexible base. The antenna coil is wound into a loop or a spiral in which a winding central portion is a coil opening portion. The magnetic sheet is disposed at a back surface of the flexible base. A square opening is formed in the metallic member. The antenna coil is exposed from the opening of the metallic member. A first side of the antenna coil is hidden by the metallic member and part of the coil opening portion and a second side are exposed from the opening, so that a magnetic flux links with the second side.

Abstract: A loop antenna in accordance with the present invention has an antenna element having a shape that traces a closed curve, the antenna element including (i) a first projection section which projects from one of two end sections of the antenna element toward an inside of the closed curve and (ii) a second projection section which projects from the other of the two end sections of the antenna element toward the inside of the closed curve, each of the first projection section and the second projection section including a feed point.

Abstract: An antenna system comprising a plurality of loop antenna sets with each of the plurality of loop antenna sets disposed in one of a plurality of different parallel planes with each of the planes being spaced apart from another adjacent plane and wherein loop antenna set in the plurality of loop antenna sets comprises a plurality of loop antennas and wherein the plurality of loop antennas are configured such that the near field inductive coupling between the plurality of loop antenna sets is zero. The absence of inductive coupling between the loop elements provides a frequency-independent means for multiplexing signals for transmission and reception by the multiple loop antenna system.

Abstract: A multiple input loop antenna comprising one or more half-loop antennas disposed above a ground plane wherein the plane of each half loop is perpendicular to the ground plane such that the multiple input loop antenna is a three-dimensional structure and electromagnetic waves are radiated from points within the volume occupied by the antenna rather than from a two-dimensional surface. For this reason, the multiple input loop antenna can radiate levels of peak power without inducing excessive air breakdown which are relatively high compared with peak power levels of conventional antennas having comparable transverse dimensions. Also described is an array antenna comprised of an array of multiple input loop antennas.

Abstract: According to one embodiment of the invention, a wireless network device comprises wireless logic and a heat dissipation unit that encases the wireless logic. The heat dissipation unit includes an antenna dome array that comprises a top surface having a convex-shaped outer periphery with a plurality of antenna elements positioned along the outer periphery.

Abstract: Antenna structures and methods of operating the same of a dual-loop-slot antenna of an electronic device are described. One dual-loop-slot antenna includes a first loop antenna coupled to a radio frequency (RF) feed and a ground plane, a second loop coupled to the RF feed and the ground plane. At least a portion of the second loop antenna is formed by the first loop antenna. The dual-loop-slot antenna also includes a slot antenna formed at least in part by a portion of at least one of the first loop antenna or the second loop antenna.

Abstract: Exemplary methods and systems related to wireless charging are disclosed. In an exemplary embodiment, a plurality of transmit antennas are used, wherein at least one transmit antenna of the plurality of transmit antennas is configured to be oriented in a different plane than at least one other transmit antenna of the plurality of transmit antennas. Furthermore, each transmit antenna of the plurality of transmit antennas is configured for transmitting power within an associated near-field.

Abstract: There is provided a case of an electronic device having an antenna pattern embedded therein, the case including: a radiator frame injection molded so that a radiator including an antenna pattern part and formed on a film is formed on one surface thereof; a case frame injection molded upwardly of the radiator frame and provided with the radiator embedded between the radiator frame and the case frame; and a boundary part forming a boundary between the radiator frame and the case frame and having a groove formed inwardly of the case frame.

Abstract: A non-contacting position sensing apparatus includes at least one vehicle-mounted receiver coil that is configured to detect a net flux null when the vehicle is optimally aligned relative to the primary coil in the charging device. Each of the at least one vehicle-mounted receiver coil includes a clockwise winding loop and a counterclockwise winding loop that are substantially symmetrically configured and serially connected to each other. When the non-contacting position sensing apparatus is located directly above the primary coil of the charging device, the electromotive forces from the clockwise winding loop and the counterclockwise region cancel out to provide a zero electromotive force, i.e., a zero voltage reading across the coil that includes the clockwise winding loop and the counterclockwise winding loop.

Abstract: Electronic article surveillance system includes an antenna system comprised of two or more of resonant circuits. Each resonant circuit includes an exciter coil having at least one wire turn aligned on a common coil axis. A transmitter is coupled to the antenna system and is arranged to generate an antenna system composite exciter signal. The composite exciter signal is comprised of a plurality of co-exciter signals having the same predetermined frequency. The composite exciter signal is capable of exciting an EAS security tag when applied to the antenna system. The transmitter has two or more transmitter output ports, each independently coupled to one of the plurality of resonant circuits. Each of the plurality of co-exciter signals is respectively provided separately from a transmitter output port to one of the of resonant circuits.

Abstract: A communication antenna device (D), on board a motor vehicle, for communicating with an antenna of a portable device, includes: a communication antenna (A) including a first part (A1) having a maximum number of primary windings (E1MAX) and a second part (A2) having a maximum number of secondary windings (E2MAX), a microcontroller (10) electrically connected to the antenna (A), a first switching element (M1), for connecting the first part and/or the second part to the microcontroller (10), a second switching element (M2), for connecting a determined number of primary windings (E1i) of the first part to the microcontroller (10), a third switching element (M3), for connecting a determined number of secondary windings (E2j) of the second part to the microcontroller (10), and elements for controlling (20) the first, second and third switching elements.

Abstract: Exemplary embodiments are directed to wireless power devices. A device may include a transmit antenna and a metallic structure spaced from and configured for detuning the transmit antenna. The device may further include a circuit for tuning the transmit antenna.

Abstract: Presented is radio frequency antenna circuit for portable and/or compact electronic devices. Embodiments comprise an antenna connected to an unbalanced current feeding arrangement. The unbalanced feeding arrangement may generate common mode currents which increase the overall radiation resistance and efficiency of the antenna circuit.

Abstract: The present invention relates to design of antennas for efficient communication over the radio-frequency airwaves in applications such as cellular phones and more particularly, wearable wireless devices, and to a system for reducing the overall electromagnetic energy radiated from a cellular phone designed to be worn on the body. The invention includes a series of antenna designs with a configuration of materials that can transmit wireless signals efficiently without excess power being emitted, enabling regulatory approval of a wearable wireless communications device, enhancing consumer safety, and increasing battery life. The design further enables a single antenna, with extraordinarily small physical dimensions, to be used across many of the most popular wireless communication spectra in the United State and worldwide.

Abstract: A multilayer film element and a method for producing the same. The multilayer film element includes a flexible dielectric carrier layer having a layer thickness of less than 800 ?m and has a first electrically conductive layer, in which a first coil-shaped conductor track is shaped in a first region of the film element, and a second electrically conductive layer, in which a second coil-shaped conductor track is shaped in the first region. The dielectric carrier layer is arranged between the first and second electrically conductive layers, and the first and second conductor tracks overlap at least in regions and are coupled to one another to form an antenna structure.

Abstract: An electronic device including a shell, an antenna unit, an insulating layer and an isolating conductor is provided. The material of the shell includes conductive material. The antenna unit is disposed on the shell and includes a first antenna and a second antenna. The first antenna and the second antenna are grounded to the shell. The insulating layer is disposed on the shell and located between a ground plane of the first antenna and a ground plane of the second antenna. The isolating conductor is disposed on the insulating layer and has a slot.

Abstract: An electronic device has wireless communications circuitry including an adjustable antenna system coupled to a radio-frequency transceiver. The adjustable antenna system may include one or more adjustable electrical components that are controlled by storage and processing circuitry in the electronic device. The adjustable electrical components may include switches and components that can be adjusted between numerous different states. The adjustable electrical components may be coupled between antenna system components such as transmission line elements, matching network elements, antenna elements and antenna feeds. By adjusting the adjustable electrical components, the storage and processing circuitry can tune the adjustable antenna system to ensure that the adjustable antenna system covers communications bands of interest.

Abstract: A device for identifying a metal substrate present in a strongly metallic environment that may also be dusty. The device includes a passive radio-frequency identification (RFID) label, a label carrier suitable for being attached to the metal substrate and to position the label at a distance therefrom, and a RFID reader having an antenna that includes, as an induction loop, two sections of a coaxial cable having a substantially identical length and each including a metal core and a metal pleat surrounding the core, the two sections being linked together, on the one hand, at one end thereof by connecting the core of one to the pleat of the other and conversely and, on the other hand, at the other end thereof by connecting only the pleats together, the cores thereof being separated at said other end.

Abstract: A near field communication (NFC) antenna including a dielectric substrate, a coil, and a coupling structure is provided. The coil is disposed on the dielectric substrate. The coupling structure includes at least one coupling branch. Two ends of the coupling branch are respectively connected to two different connection points on the coil. The coupling structure is configured to improve the isotropic characteristics of the NFC antenna.

Abstract: An antenna and a wireless communication device which are suitable for an RFID system and in which radiation characteristics are prevented from being changed as a result of impedance adjustment are configured such that the antenna includes a first loop electrode that has an external shape of a regular polygon or circle and that includes a pair of open ends, feeding portions arranged inside the first loop electrode, a second loop electrode connected to the feeding portions, and a coupling electrode that couples the first loop electrode and the second loop electrode to each other. The wireless communication device is obtained by coupling the wireless communication element which processes a high-frequency signal to the feeding portions.

Abstract: A circuit arrangement includes a first antenna configured to couple to an electromagnetic field from a first frequency band and a second antenna configured to couple to an electromagnetic field from a second frequency band, the second frequency band being different than the first frequency band. The first antenna is connected in series with the second antenna as an electrical supply line therefor.

Abstract: A compensated antenna array (108) and an RFID system including the compensated antenna array are disclosed. The antenna array includes a first antenna (208) and a second antenna (204) where the first antenna is positioned within the second antenna and overlaps itself at least one point (216) such that at least some induced current in the first antenna is offset by at least some induced current in the second antenna and such that at least some induced current in the second antenna is enhanced at the at least one point of overlap.

Abstract: An antenna includes an antenna element in which a predetermined electrode is provided on a dielectric base member and a substrate in which a predetermined electrode is provided on a base. A feed-terminal connecting electrode to which a feed terminal provided on the lower surface of the antenna element, an external-terminal connecting electrode to which an external electrode is connected, and a ground-terminal connecting electrode to which a ground terminal provided on the lower surface of the antenna element are provided on the upper surface of an ungrounded area of the substrate. A chip inductor is connected between the external-terminal connecting electrode and the feed-terminal connecting electrode, and a chip inductor is connected between the external-terminal connecting electrode and the ground-terminal connecting electrode. The shortcut of a current route achieved by each of the chip inductors is provided.

Abstract: Microstrip patch antenna (46), feed structure (48), and matching circuit (50) designs for an RFID tag (10). A balanced feed design using balanced feeds coupled by a shorting stub (56) to create a virtual short between the two feeds so as to eliminate the need for physically connecting the substrate to the ground plane. A dual feed structure design using a four-terminal IC can be connected to two antennas (46a,46b) resonating at different frequencies so as to provide directional and polarization diversity. A combined near-field/far-field design using a microstrip antenna providing electromagnetic coupling for far-field operation, and a looping matching circuit providing inductive coupling for near-field operation. A dual-antenna design using first and second microstrip antennas providing directional diversity when affixed to a cylindrical or conical object, and a protective superstrate (66). An annular antenna (46c) design for application to the top of a metal cylinder around a stem.

Abstract: This invention relates to dynamically controlled, electronic article surveillance (EAS) systems whereby an array of antenna elements is digitally phased and actively driven for concurrent transmission, and digitally phased and combined in the receiver unit to improve detection. In particular, the individual frequency and phase of the plurality of the transmit/receive signals are rapidly varied to allow for automated manipulation (steering) of the transmit field pattern and receive field sensitivity. The invention achieves the following features via means of digital phasing and dynamic computer control: sufficient far-field cancellation, null-free detection and uncompromised detection performance regardless of tag's orientation while using single transmission drivers to drive entire antenna structures, whether loop antenna or ferrite core antenna, using a phase coupler, thereby allowing more efficient system operation or additional features such as deactivator antenna operation.

Abstract: A dielectric body includes a first radiating element on a first side and a second radiating element on a second side. The first radiating element and the second radiating element are linear conductors that each extend from a first end to a second end (an open end), and are parallel or substantially parallel to each other in a direction from the first end to the second end. The first end of the first radiating element is connected to a first port of a coupling degree adjustment circuit, and the first end of the second radiating element is connected to a second port of the coupling degree adjustment circuit. The first radiating element and the second radiating element are mainly coupled to each other in the coupling degree adjustment circuit.

Abstract: A voltage detector for detecting a voltage generated in a second resonant coil that is disposed to face a first resonant coil and that performs at least one of electric power transmission and electric power reception to and from the first resonant coil in a contactless manner by means of electromagnetic resonance includes: a first high-impedance element having one end connected to one end of the second resonant coil; a second high-impedance element having one end connected to the other end of the second resonant coil; a low-impedance element connected between the other end of the first high-impedance element and the other end of the second high-impedance element and having an impedance smaller than each of those of the first and second high-impedance elements; and an output terminal for outputting a signal associated with a voltage applied across the low-impedance element.

Abstract: This invention relates to a method and apparatus for deactivating EAS markers. The device utilizes deactivating magnetic fields created by energizing electrical coils to deactivate electronic article surveillance markers. It consists of housing having an internal structure holding an electrical coil arrangement. The coil arrangement comprises two electrical coils that are arranged essentially coplanar, arranged side-by-side. A third electrical coil is arranged such that each of its windings wraps around both the first and said second electrical coils. Current flowing through the coils generates a composite deactivating magnetic field above the housing. This deactivating magnetic field allows deactivation of a tag swept in any orientation, and does not require the tag to come into physical contact with the deactivating device. Flush mounting conserves space, allowing for ease of merchandise movement over the counter. A distinctive sound indicates the presence and deactivation of the label.

Abstract: Dual polarization in an antenna structure that results from a number of radiating elements arranged in a loop configuration. The antenna structure is excited by a single coaxial feedline in an interior portion of the antenna structure. The antenna structure may include a ground plane that enables a directional radiation pattern. The antenna structure may also be operational without a ground plane to enable an omnidirectional radiation pattern. The antenna structure may be configured in a number of loop configurations electrically connected to each other by a number of microstrip loops extending in a horizontal and vertical planar direction.

Abstract: A flat identification antenna for receiving signals from multiple tag-carrying items placed on the antenna and a system for identifying and tracking multiple tag-carrying items including the same. The antenna comprises a first planar array of partially overlapping first planar loops, a second planar array of partially overlapping second planar loops and an insulating board positioned between the first and second arrays. The loops in the first array are arranged to partially overlap each other in one direction and the loops in the second array are arranged to partially overlap each other in another direction.

Abstract: The invention provides a dipole antenna and mobile communication terminal. The dipole antenna comprises a first vibrator, a second vibrator, a feed terminal and a dielectric slab, the first vibrator and the second vibrator being provided anti-symmetrically on the dielectric slab, wherein the first vibrator comprises a first resonant ring configured to transmit and receive radio signals in a GSM900 band and a first antenna arm configured to transmit and receive radio signals in a DCS1800 band, the first antenna arm being connected to the first resonant ring; the second vibrator comprises a second resonant ring configured to transmit and receive radio signals in the GSM900 band and a second antenna arm configured to transmit and receive radio signals in the DCS1800 band, the second antenna arm being connected to the second resonant ring; the first antenna arm is connected to the second antenna arm through the feed terminal.

Abstract: A floor mat has a cavity accommodating an insert supporting a releasable sheet member. An adhesive releasably attaches the sheet member to the insert to allow the sheet member to be removed from the mat and replaced with another sheet member. The sheet member has visual indicia providing persons with information. Signal transmitter and receiver antennas of an electronic article surveillance system are located within the floor mat.

Abstract: An antenna includes a flexible sheet that includes a first main surface including a first coil electrode located thereon and a second main surface including a second coil electrode located thereon. The first and second coil electrodes are wound in opposite directions when viewed from different directions. A first end of the first coil electrode faces a first end of the second coil electrode through the flexible sheet. Similarly, a second end of the first coil electrode faces a second end of the second coil electrode through the flexible sheet. The first and second coil electrodes define an inductor, the first ends of the first and second coil electrodes define a capacitor, and the second ends of the first and second coil electrodes define a capacitor whereby a resonant antenna is provided.

Abstract: An antenna device that radiates or receives a radio wave includes: a first wire line; a second wire line that is parallel to the first wire line; a power feeding/receiving point that is provided at proximal portions of the first wire line and second wire line; and a terminal resistance that is provided at distal end portions of the first wire line and second wire line.

Abstract: An antenna device includes: a plurality of loop metal wires that form loops out of metal wires and that are radially arranged around a center line; a power feeding portion that feeds power to the loop metal wires or a power receiving portion that receives power from the loop metal wires and that is provided on the center line; and a variable impedance element that is inserted in each of the loop metal wires.

Abstract: A multilayer film element and a method for producing the same. The multilayer film element includes a flexible dielectric carrier layer having a layer thickness of less than 800 ?m and has a first electrically conductive layer, in which a first coil-shaped conductor track is shaped in a first region of the film element, and a second electrically conductive layer, in which a second coil-shaped conductor track is shaped in the first region. The dielectric carrier layer is arranged between the first and second electrically conductive layers, and the first and second conductor tracks overlap at least in regions and are coupled to one another to form an antenna structure.

Abstract: An integrated distributed active radiator (DAR) device includes first and second conductors disposed adjacent to each other. The conductors define curves which close on themselves to within a distance of a gap. The first conductor first end is electrically coupled to the second conductor second end across the gap. The second conductor first end is electrically coupled to the first conductor second end across the gap. At least one active element is configured to produce a self-oscillation current at a frequency f0. The self-oscillation current has a first direction in the first conductor and a second direction in the second conductor. The DAR device is configured to generate a harmonic current which has the same direction in both conductors. The DAR device is configured to efficiently radiate electromagnetic energy at a harmonic frequency and to substantially inhibit the radiation of electromagnetic energy at the frequency f0.

Abstract: A method and apparatus for providing a broadband near field of an antenna are disclosed. A small broadband loop antenna may include a printed circuit board (PCB) substrate with multiple layers. Printed on the PCB substrate are dual loops sharing a same driver circuit, an impedance matching network, a primary ground layer and a conductive layer. A shorting via connects the dual loops to a ground plane. The antenna may be tuned to a desired operating frequency by adjusting parameters of the loop, such as the position of the shorting via.

Abstract: The invention concerns an RFID/NFC antenna circuit. An antenna (L) is formed by at least three turns (S), the antenna having a first end terminal (D) and a second end terminal (E), two access terminals (1, 2) to connect a charge, a tuning capacitance (C1, ZZ) for tuning at a prescribed tuning frequency, an intermediate tap (A) connected to the antenna (L) and distinct from terminals (D, E), a first connector (CON1A) connecting the intermediate tap (A) to terminal (1), a second connector (CON2E) connecting end terminal (E) to the capacitance terminal (C1E). A third connector (CON31, CON32) connects the capacitance terminal (C1X) and the second access terminal (2) respectively to a first point (P1) of the antenna (L) and to a second point (P2) of the antenna (L) connected to the first point of the antenna (L) at least one turn (S) of the antenna (L).

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: The present invention is disclosed to provide an NFC antenna using dual resonance, wherein a closed circuit is formed by a capacitor and a loop antenna, and a relay unit is attached to a portable wireless terminal that forms a resonance to a predetermined frequency signal mutually transmitted between a portable wireless terminal reader and an NFC chip, and in the course of communicating between the NFC chip and the reader, the relay unit relays a signal transmitted by the reader to an NFC antenna unit, and the NFC chip relays a signal transmitted through the NFC antenna unit to the reader to thereby increase a recognition distance capable of obtaining predetermined information.

Abstract: The invention relates to a method for manufacturing contactless portable objects having an integrated circuit, and to contactless portable objects having an integrated circuit. The method of the invention is characterized in that it comprises the following steps: providing a dielectric antenna substrate (6) which carries an antenna circuit (7) having at least one turn (7-1, 7-2, 7-3, 7-4) and two contact terminals (8-1, 8-2); providing a bridge (5) having a dielectric bridge substrate (1) and a chip (3) having an integrated circuit; and placing said bridge (5) with said chip (3) onto said dielectric antenna substrate (6) so that the bridge (5) straddles said at least one turn (7-1, 7-2, 7-3, 7-4) and forms an electric connection between said chip (3) and said antenna circuit (7). The invention is particularly useful for HF RFID objects.

Abstract: An antenna includes a first loop defining a first enclosed area and having a first phase center point, a second loop coupled to the first loop and disposed substantially parallel to the first loop, the second loop defining a second enclosed area, and a third loop coupled to the first loop and the second loop and substantially parallel to the first loop, the third loop defining a third enclosed area with a plurality of adjuster elements coupled to at least one of the first loop, the second loop, or the third loop to provide an adjustable loop and configured to expand or contract the enclosed area of the adjustable loop.

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: 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.