Abstract: An antenna, consisting of a folded looped conductor closed at a feedpoint. The antenna has at least two conductive arms extending from the feedpoint.

Abstract: An antenna includes a loop unit and an arm unit. The loop unit includes a grounding element that extends along a first plane, a feeding element that extends along a second plane, and a radiating element that interconnects the feeding element and the grounding element. The arm unit extends from the feeding element of the loop unit.

Abstract: A loop antenna is provided having a matching circuit integrally formed includes a radiator which is formed in a loop shape; and a matching circuit including an extension part extended from one side of the radiator to an inner side of the loop and a bend part bent from an end of the extension part several times. Accordingly, the space for the installation of the loop antenna can be reduced and the design modification of the matching circuit can be facilitated.

Abstract: A receiver device (10) for receiving audio signals from a remote source is provided, comprising: a magnetic loop antenna for receiving radio frequency signals carrying audio signals, a signal processing unit for reproducing audio signals from the radio frequency signals received by the antenna, an output interface which is capable of being mechanically connected to an input interface of a hearing instrument to be worn at a user's ear in order to supply the audio signals from the signal processing unit as input to the hearing instrument, and a housing enclosing the antenna and the signal processing unit, wherein the antenna is designed as a printed board circuit with a loop-like conductor on an at least partially flexible insolating substrate and comprises a first portion defining a first plane and a second portion defining a second plane, wherein the first plane and the second plane are oriented at an angle of 60 to 120 degrees relative to each other.

Abstract: A circularly polarized antenna includes a dielectric substrate, a closed-loop radiating element, a micro-strip radiating element, a feeding element, and a grounding element. The closed-loop radiating element is formed on a first surface of the dielectric substrate. The micro-strip radiating element is formed on the first surface of the dielectric substrate, is surrounded by the closed-loop radiating element, and is coupled to the closed-loop radiating element. The feeding element is formed on the first surface of the dielectric substrate, is surrounded by the closed-loop radiating element, and is coupled to the micro-strip radiating element. The grounding element is formed on a second surface of the dielectric substrate.

Abstract: A circular polarized signal receiving antenna (100) including an active element having first and second ends separated by a gap, a dimension of the active element, between the first and second ends thereof, corresponding to approximately one wavelength of a resonant operating frequency of the antenna. A feed-point is coupled to the active element, wherein the feed-point is located approximately one-quarter of the wavelength from the first end of the active element and approximately three-quarters of the wavelength from the second end of the active element. In one embodiment, the feed-point is reactively coupled to the active element.

Abstract: An antenna device includes a dual-loop radiating element, first and second radiating arms, a feeding element, and a grounding element. The dual-loop radiating element has first and second loops. Each of the first and second radiating arms is disposed in a respective one of the first and second loops. The feeding element interconnects the first and second loops and the first and second radiating arms. The grounding element is connected to the first and second loops.

Abstract: There is provided a windmill-shaped loop antenna including: a dielectric substrate; a first radiation unit disposed on a top surface of the dielectric substrate and including a metal pattern having loop pieces; a second radiation unit disposed at a bottom surface of the dielectric substrate and including a metal pattern having loop pieces arranged not to face the loop pieces of the first radiation unit; and a plurality of identical transmission line from a center of the top and bottom surfaces of the dielectric substrate to the first and second radiation units, which form windmill-shaped metal pattern with the first and second radiation unit.

Abstract: An antenna device includes a single-loop radiating element, a radiating arm, a feeding element, and a grounding element. The single-loop radiating element is operable within a first frequency band. The radiating arm extends from the single-loop radiating element and is operable in second frequency band. The feeding element is connected to the single-loop radiating element and the radiating arm. The grounding element is connected to the single-loop radiating element.

Abstract: Provided is an antenna for a Radio Frequency Identification (RFID) reader using an electrical loop. It includes an upper metal plate which functions as a radiator; a lower metal plate which is disposed apart from the upper metal plate by a predetermined distance and functions as a radiator; a ground plate disposed apart from the lower metal plate by a predetermined distance; and a feeding probe disposed at the center of the upper and lower metal plates. The antenna can perform radiation parallel to the earth's surface including other directions. Therefore, it is suitable for an RFID reader which recognizes an RFID tag attached in parallel to the earth's surface. The electrical loop antenna can control impedance matching, resonance frequency, antenna gain, and radiation pattern according to the distance between metal plates, size of the metal plates, thickness of a feeding probe, and how the metal plates are arranged.

Abstract: A loop antenna is disclosed which can prevent the occurrence of variance in the loop length of the installed loop antenna element, and a method for manufacturing the loop antenna. The loop antenna comprises electrical wires constituting the antenna element and a housing that holds the electrical wires. Furthermore, the housing is formed with first guide grooves that guide the first end portions of the electrical wires and that have wall surfaces against which the tip ends on the side of the first end portions of the electrical wires abut, and second guide grooves that guide the second end portions of the electrical wires and that have wall surfaces against which the tip ends on the side of the second end portions of the electrical wires abut. Moreover, crimp parts with which the end portions of the electrical wires are connected by crimping are provided inside the respective guide grooves.

Abstract: To provide a circularly polarized antenna capable of obtaining an excellent axial ratio over a very wide range and having a great gain in a zenith direction. The circularly polarized antenna (10) includes a planar loop antenna element (122) and feeding means for providing quadruple feeds with their phases varied by 90 degrees with respect to the planar loop antenna element (122). The feeding means has four feeding probes (131 through 134). The circularly polarized antenna (10) is provided with a circuit board (25) disposed in parallel with the planar loop antenna element (122). The circuit board (25) has an area greater than that of the planar loop antenna element (122). The circuit board (25) has a principal surface (25U) which entirely serves as a ground plane. The circuit board (25) has a rear surface (25L) provided with a 90-degree phase shifter formed thereon.

Abstract: A robot cleaner including: a main body; and an RF antenna installed at the main body with such a length appropriate for communication with a remote controller. Because the RF antenna is installed within the main body, the degradation of traveling performance and cleaning efficiency caused as the antenna contacts with an external obstacle can be prevented.

Abstract: A communication device includes a radio frequency identification tag that performs a radio communication with a predetermined device. A first metal body has an electrical conductivity. A space adjustment unit is configured to adjust a space between the first metal body and the radio frequency identification tag. The first metal body is configured to be replaced with a second metal body, and when the first metal body is replaced with the second metal body, the space adjustment unit is configured to adjust a space between the second metal body and the radio frequency identification tag.

Abstract: The present invention relates to an integrated circuit package comprising at least one substrate, each substrate including at least one layer, at least one semiconductor die, at least one terminal, and an antenna located in the integrated circuit package, but not on said at least one semiconductor die. The conducting pattern comprises a curve having at least five sections or segments, at least three of the sections or segments being shorter than one-tenth of the longest free-space operating wavelength of the antenna, each of the five sections or segments forming a pair of angles with each adjacent segment or section, wherein the smaller angle of each of the four pairs of angles between sections or segments is less than 180° (i.e.

Abstract: The wideband L-loop antenna is presented in this invention. It has excellent performance for lower band of UWB system and has the attractive features of small size, inexpensive, and easy to design. The antenna composed of a single metallic layer is printed on the top of a substrate and a coupled tapered transmission line is printed on the top of the same substrate. A L shape portion is formed by widening partially or wholly the width of a part of antenna elements in comparison with the other part.

Abstract: A dual-band loop antenna for using in a mobile phone for (890˜960 MHz)/DCS(1710˜1880 MHz) application is disclosed to include a ground plane in a substantially rectangular shape having a grounding point and a shorting point, a radiating metallic loop having a feeding end and a shorting end electrically connected to the shorting point of the ground plane and spaced from the feeding end at a predetermined distance, and a radiating metallic plate surrounded by the radiating metallic loop and having one end electrically connected to a vicinity around the shorting end of the radiating metallic loop and spaced from the shorting end of the radiating metallic loop at a distance less than 10 mm.

Abstract: A mobile wireless communications device may include a housing, a main dielectric substrate carried by the housing, circuitry carried by the main dielectric substrate, and a ground plane conductor on the main dielectric substrate. The mobile wireless communications device may further include an L-shaped dielectric extension comprising a vertical portion extending outwardly from the main dielectric substrate and an overhang portion extending outwardly from the vertical portion and above an adjacent portion of the main dielectric layer. A main loop antenna conductor comprising at least one conductive trace may be relatively positioned on the overhang portion of the L-shaped dielectric extension so as not to overlap the ground plane conductor.

Abstract: The invention regards a communication device which is adapted for placement in a users ear and comprises a shell part enclosing an input transducer for receiving an input signal, a signal processing device and an output transducer for providing a signal perceivable as sound, a battery located at a surface part of the shell which is facing away from the head of the user, a transmission and reception circuit for transmission and/or reception of electromagnetic energy, and where an antenna for radiating and/or receiving electromagnetic energy is arranged with a first surface turned towards the surroundings and a second surface located in close proximity of the battery whereby the antenna forms a loop with a loop axis pointing away from the ear and head, whereby the loop material has a wider extension in the direction of the loop axis than in the direction perpendicular to the loop axis.

Abstract: A mobile wireless communications device may include a housing and a multi-frequency band antenna carried within the housing. The multi-frequency band antenna may include a main loop conductor having a gap therein defining first and second ends of the main loop conductor, a first branch conductor having a first end connected adjacent the first end of the main loop conductor and having a second end defining a first feed point, and a second branch conductor having a first end connected adjacent the second end of the main loop conductor and a second end defining a second feed point. The antenna may further include a tuning branch conductor having a first end connected to the main loop conductor between the respective first ends of the first and second branches.

Abstract: The invention relates to a vehicle mobile radio holder for mounting a mobile radio terminal in a vehicle, with the vehicle mobile radio holder having a housing with a first housing part which is shaped to hold a mobile radio terminal. The vehicle mobile radio holder also has an electrical interface for connection of an external antenna to the vehicle mobile radio holder, and a coupling antenna which is electrically connected to the interface, for non-contacting electromagnetic coupling of RF signals between the coupling antenna and the antenna of the mobile radio terminal which is inserted into the vehicle mobile radio holder. The vehicle mobile radio holder also has one or more elements for reflection of electromagnetic radiation which has been emitted from the antenna of the mobile radio terminal inserted into the vehicle mobile radio holder and has not been injected into the coupling antenna, and/or has one or more elements for absorption of this electromagnetic radiation.

Abstract: A wideband meander line loaded antenna is configured to be flush mounted to a conductive surface serving as a ground plane by embedding the meander line components within a conductive cavity surrounded at its top edge by the ground plane. The antenna thus looks out of a cavity recessed in the surface. By permitting flush mounting the meander line antenna, not only can the antenna dimensions be minimized due to the use of the meander line loaded antenna configuration, but in aircraft applications no part of the antenna exists above the skin of the aircraft, thereby to minimize turbulent flow. Also disclosed is a method and apparatus in which a lossy dielectric is placed across the feed points of a loop type meander line loaded antenna to markedly decrease the VSWR to below 3:1, thus to increase the bandwidth of a relatively wideband 3:1 meander line loaded antenna to 6:1.

Abstract: The invention concerns an inductor comprising a plurality of so-called first conductors (100 to 109) substantially parallel to one another, at least three of said first conductors being substantially mutually equidistant and distributed over a surface (120), and an electric power supply (140) of said conductors adapted to circulate an electric current in the same direction in said conductors. Preferably, said conductors are more densely distributed at the ends of the surface (120) comprising them. Preferably, the inductor further comprises a plurality of second substantially parallel conductors perpendicular to the first conductors, the electric power supply circulating an electric current in the same direction on said second conductors. Preferably, the inductor further comprises a plurality of third conductors forming closed turns, the electric power supply circulating an electric current in the same direction in said third conductors.

Abstract: A multiple band capacitively-loaded magnetic dipole antenna includes a plurality of magnetic dipole radiators connected to a transformer loop where the magnetic dipole radiators include at least one capacitively-loaded magnetic dipole radiator. The transformer loop has a balanced feed interface and includes a side that provides a transformer interface of quasi loops formed by the plurality of magnetic dipole radiators. Each quasi loop has a configuration and length to maximize antenna performance within a different frequency band. The at least one capacitively-loaded magnetic dipole radiator may be formed with a meander line structure and may include an electric field bridge such as a dielectric gap, lumped element, circuit board surface-mounted, ferroelectric tunable, or a microelectromechanical system (MEMS) capacitor.

Abstract: Described herein is a radiofrequency receive coil system for a magnetic resonance imaging (MRI) system that includes an array of a plurality of individual coils arrayed around the outer limits of the imaging volume that is defined by a main magnet and a gradient coil, positioned tangentially down the length of said volume, with the plurality of individual coils each having an initial position with relation to the patient to be imaged; and mechanical support for the individual coils. The individual coils may be dynamically repositioned for optimal imaging. A further embodiment of the system includes an array of individual coils positioned radially on the vertical plane around the patient table, which may advance into the gantry before imaging. The method for use of the receive coil system is also described.

Abstract: A radio frequency identification (RFID) system is described that utilizes a substantially-contiguous conductive shield to shape an electromagnetic field formed by an antenna for communication with RFID tags. The antenna and the conductive shield have substantially planar forms, and may be mounted to a surface of a check-in/check-out area. The conductive shield is positioned around the antenna and within a plane parallel to the antenna, e.g., within the same plane. The conductive shield shapes the electromagnetic field to extend substantially in a direction perpendicular to the antenna, and prevents the electromagnetic field from forming substantially over the conductive shield.

Abstract: The present invention provides apparatuses and methods for an antenna in a wireless receiving system. The antenna includes an opened segmented component that is electrically coupled to a printed circuit board and a capacitive top loaded component that provides a capacitive load. The vertical profile of the antenna may be reduced sufficiently so that the antenna may be internally located in the same enclosure as the printed circuit board. The capacitive top loaded component is situated away from a ground plane of a printed circuit board to reduce the capacitive coupling is reduced, and consequently the required voltage standing wave ration (VSWR) is maintained over a broad operating range. The capacitive top loaded component includes a closed shape that provides a capacitive load. In order to tune the antenna to operate with a desired characteristic (e.g., within a VSWR criterion), the closed shape may be modified.

Abstract: The RFID tag of the present invention includes the tag antenna, and the LSI chip being connected in parallel with the tag antenna. The tag antenna includes a feeder terminal to which the LSI chip is connected, a loop antenna connected to the feeder terminal, and a bypass conductive line bypassing the loop of the loop antenna. Further, the line width of the bypass conductive line is structured thicker than the line width of the loop antenna.

Abstract: A ground conductor constituting a bottom board and a loop antenna formed of a strip conductor formed separately from and around the ground conductor are provided on one face of a dielectric substrate, and a transmitter-receiver is connected to one end of the loop antenna serving as the power dispatching unit via a first matching circuit, and a second matching circuit is connected to the other end. A conductor formed of the strip conductor is provided on the dielectric substrate on the other face of the dielectric substrate so as to oppose the loop antenna with the intermediary of the dielectric substrate. A third matching circuit is connected to one end of the conductor and a fourth matching circuit is connected to the other end of the conductor. The loop antenna and the conductor are set to have a wavelength shorter than that of the frequency band to be used.

Abstract: The present invention relates to an antenna element for a portable communication device as well as to a portable communication device including such an antenna element. The antenna element includes a wire of an electrically conducting material having a first and a second feeding end for connection to a radio communication unit and ground. The wire also has a winding section comprising a number of turns around a central axis. The last turn of the winding section, which is provided furthest from the first feeding end is in physical contact with the previous turn and the rest of the turns are separated from each other.

Abstract: A method and apparatus are provided for making radio frequency (RF) inlays. The RF inlays include an integrated circuit and an antenna affixed to a substrate material carrying the integrated circuit. During processing, portions of the wire forming the antenna are located adjacent to, but not directly over the integrated circuit such that the wire may be subject to further processing, such as removing insulation without potentially damaging the integrated circuit. In the subsequent processing step, the wire ends are placed in contact with and secured to the integrated circuit terminal areas. Methods of the invention include forming loops with the wire ends wherein the loops extend above a plane of the substrate, and in another processing step, the loops are displaced to be electrically connected to the terminal areas. Methods also include repositioning the wire and using a brush or comb device.

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: The present invention seeks to provide a multiple monopole antenna including a looped conductor having at least two conductive arms extending therefrom and a common feed point located on the looped conductor.

Abstract: A chip seal ring that maintains the chip seal ring as a continuous barrier to contamination, while at the same time creating a desirable electrical feature in the seal ring that enables the use of an on-chip loop antenna. In one embodiment, at least a portion of the chip seal ring has a serpentine configuration, such as a square wave, triangle wave, or curved geometry, that increases the reactance and resistance of the seal ring so as to mitigate the adverse induced currents created by the magnetic coupling effects between the on-chip antenna and the seal rings, thereby improving the efficiency of an on-chip loop antenna in the presence of the seal ring.

Abstract: A wearable device comprises one or more circuit substrates comprising electrically conductive parts, a radio unit and a loop antenna coupled to the radio unit. The loop antenna comprises a conductor formed into a loop, wherein the electrically conductive parts of at least one of said one or more circuit substrates substantially act as a ground plane for the loop antenna. Said at least one circuit substrate is positioned substantially on the same plane with the loop and such that at least the electrically conductive parts of said at least one circuit substrate are within an area defined by the loop when said at least one circuit substrate and the loop are observed perpendicularly with respect to a plane of the loop in order to minimize the ground plane effect of the electrically conductive parts of said at least one circuit substrate on the loop antenna.

Abstract: The present invention discloses: a connecting part of conductor pattern, which is connected to a conductor pattern formed on a surface of an insulating substrate and which has at least one dent on the surface, and a conductor patterns-connected structure obtained by electrically connecting the connecting parts of conductor patterns, mentioned above, to each other with a conductive material which fills the inside of the dent of each connecting part and further is adhered to each connecting part.

Abstract: A loop antenna device includes a loop antenna having a high noise resistance performance. In a loop antenna having a shield member covering a looped conductor portion formed in a loop shape from a conductive wire, a non-covered portion where the looped conductor portion is not covered is formed in correspondence with a portion of the conductive wire including a reference position for the symmetry of two terminals for connection between the antenna device and a reception circuit. This provides a balanced shield structure. Besides, a line for connecting one end of the conductive wire to the ground potential and a line for connecting the shield member to the ground potential are individually separate from each other, whereby reception of a voltage fall due to common impedance by the antenna is suppressed.

Abstract: The present invention relates to a wireless communication device and an antenna arrangement in such a device, where a loop antenna element (18) comprises: a first section (20) provided in and extending a length in first plane, a second section (22) spaced from, provided in and extending a length in the first plane, a third section (24) in a second plane parallel to the first plane, aligned with the first and second sections, and a fourth (26) and a fifth section (28) interconnecting antenna sections in the first and second planes. The sections form a three-dimensional structure having a substantial two-dimensional extension in at least one of the first and second planes. The second section extends along the same line as the first section or has a curvature, which is a continuation of the curvature of the first section. Thereby a small wideband antenna requiring a small ground plane is obtained.

Abstract: Described is the transformation of a mono-band antenna into a or multi-band antenna by adding matching circuits, in either serial or parallel fashion, to a mono-band antenna. The matching circuits contain reactive elements such as inductors and capacitors which create impedance matching for two or more frequency bands. These multi-band loop antennas can be used for frequencies extending from a few megahertz to several hundred megahertz. The method of tuning such multi-band antennas is also described.

Abstract: A contactless reading system, wherein a chip card is fixed on a planar support of an object such as a book (11) for identification by means of the data contained in the chip card, and a mobile reader (16) provided with an antenna in order to read the data of the card. The antenna of the reader (16) consists of a small-sized convolution disposed in a series with a large-sized convolution, which are concentric and which have the same winding direction. A maximum value is obtained for the component (H) of the electromagnetic field produced by the antenna parallel to the antenna at a given distance from the antenna. Maximum reception by the chip card of electromagnetic signals emitted by the antenna is obtained when the antenna is disposed in a perpendicular position in relation to the support of the card and at the given distance from the card.

Abstract: The present invention relates to a radiating element designed to operate in an electrically small antenna including a conducting strip folded N times like a bellows.

Abstract: A loop antenna is provided having a matching circuit integrally formed includes a radiator which is formed in a loop shape; and a matching circuit including an extension part extended from one side of the radiator to an inner side of the loop and a bend part bent from an end of the extension part several times. Accordingly, the space for the installation of the loop antenna can be reduced and the design modification of the matching circuit can be facilitated.

Abstract: A transmission line resonator loop antenna includes a transmission line resonator for receiving an input excitation signal and producing a predetermined resonant output signal which is substantially phase reversed relative to the input excitation signal; and a loop antenna having one end responsive to the phase reversed output signal and the other end responsive to a reference excitation signal for maintaining the predetermined resonance.

Abstract: An RFID tag which has improved radiation/reception characteristics when used in proximity to the human body, and has an antenna which, when stacked with a 13 MHz band RFID tag, does not have an effect on the loop antenna of that tag. An RFID tag assembly comprises a first RFID tag having a coiled loop antenna and a second RFID tag superposed on the first RFID tag, the second RFID tag comprising an antenna formed by a metal member which covers at least a portion of a surface of a dielectric substrate, an electronic part mounted on the metal member, and a member which is provided with the overlapped coiled loop antenna of the first RFID tag housed in the end thereof so as to cover a portion of the antenna formed by the metal member.

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: An antenna device for a portable device has an antenna loop of conducting material to be connected to radio circuitry in the portable device. The antenna loop is positioned opposite a ground plane of a PCB. Also, the antenna device also comprises at least one battery, which is positioned in the extension of a first side of the PCB, and acts as an extension of the ground plane of the PCB.

Abstract: An antenna system for use in a communications device, such as a mobile phone. The antenna system has a multiband GSM antenna operating at GSM850, GSM900, GSM 1800 and GSM 1900 that has a short-circuited section located between a separate UMTS antenna and a UMTS receive diversity antenna. As such, large electrical isolation between the two UMTS antennas can be achieved. The UMTS antennas can be short-circuited microstrip loop antennas, IFA, PIFA, ILA or PILA antennas. These antennas are well-isolated antennas instead of coupled antennas. As such, the diversity antenna is well isolated from the main antenna despite its close proximity to the main antenna. Well-isolated antennas have little mutual coupling and, therefore, are easier to design than coupled antennas, because isolated antennas can be tuned independently from each other.

Abstract: There are disposed first coupling conductors, which comprise a pair of coupling branch lines 1 and 2 connected to the first antenna conductor 3 and extend inward from the first antenna conductor. The coupling branch lines 1 and 2 have open ends 1a and 2a disposed so as to be adjacent to each other and be capacitively coupled to each other. The open ends 1a and 2a of the coupling branch lines 1 and 2 are located at closest or substantially closest portions to each other. The second antenna conductor 13 includes second coupling conductors, which comprise a pair of coupling branch lines 11 and 12 connected the second antenna conductor 13 and extending inward from the second antenna conductor. The coupling branch lines 11 and 12 have open ends disposed so as to be adjacent to each other and be capacitively coupled to each other. The open ends of the coupling branch lines 11 and 12 are located at closest or substantially closest portions to each other.

Abstract: An antenna structure is composed of an antenna seat, a terminal, and an antenna set. The antenna set includes antennae, a matching circuit, conducting wires, and a lead wire. By the conducting wires and matching circuit connected on the antennae, an impedance matching can be achieved to be coupled with frequency of radio wave signal to be received for reducing a standing-wave ration, when the antenna are receiving the radio wave signal. In addition, the frequency and wavelength of radio wave signal received by the antennae can be adjusted by changing lengths of conducting wires.

Abstract: Disclosed herein is a wideband glass antenna for a vehicle. The wideband glass antenna includes a loop antenna and a pattern. The loop antenna has a loop antenna pattern, in which a first side is connected to a feeding point, a second side is connected to a ground, and the two sides are connected to each other. The loop antenna pattern forms a predetermined space in the loop antenna. The pattern is formed in the loop antenna and is connected by a plurality of tuning arms for expanding a frequency band of the antenna.