Abstract: Exemplary embodiments are directed to a device including a focused antenna. A device may include a minor plane surface and an antenna positioned proximate the minor plane surface. The antenna may be configured for generating a field focused around the minor plane surface. The antenna may further include an element extending from the minor plane surface toward another minor plane surface of the device.

Abstract: A broadband multi-signal loop antenna in a mobile communication device such as a cellular phone having a chassis is disclosed. The antenna includes a conductor assembly electrically connected to the chassis and including a plurality of loops each starting at a common feed point and ending at respective grounding point; and a member for mounting the conductor assembly thereon. The loop has a grounding point. The ground points are located at different physical positions. The antenna is adapted to operate at multi-band.

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: There is provided an antenna arrangement for RF systems. An exemplary antenna arrangement comprises at least two antenna coils that are installed on a flat, non-conductive carrier. The first antenna coil as well as the second antenna coil comprise one or more windings that are applied onto the carrier. The antenna coils are arranged in at least two different layers that are one above the other and that do not touch each other. The first antenna coil is of a first quality and the second antenna coil is of a second quality. The first antenna coil is arranged so as to be offset with respect to the second antenna coil in such a way that the mutual inductance between the two antenna coils is minimized.

Abstract: An electronic information device includes an integrated circuit embedded within the device. The electronic information device further includes a first antenna that is embedded within the device and is connected to the integrated circuit. The electronic information device further includes a second antenna that is embedded within the device and is connected to the integrated circuit. The first antenna is oriented within a first plane and the second antenna is oriented within a second plane that is substantially parallel to the first plane.

Abstract: The present invention is directed to a small aperture broadband localizing system, comprising one or more systems for ascertaining angle-of-arrival of an electromagnetic signal and a transmit tag. A system for ascertaining angle-of-arrival of an electromagnetic signal further comprises a compact antenna array and an evaluation apparatus, and an electromagnetic signal is preferentially a broadband or ultra-wideband (UWB) signal.

Abstract: An antenna substrate for a non-contact communication apparatus includes a support substrate and an antenna coil provided on or inside of the support substrate. The antenna coil has a first opening and an auxiliary coil. The auxiliary coil has a second opening which has an opening area smaller than the first opening. The auxiliary coil is insulated and isolated from the antenna coil, and arranged so that the second opening is opposed to a part of the first opening when viewed from a direction orthogonal to a surface of the support substrate.

Abstract: A cellular modem card that conforms to a PCMCIA standard includes a balanced antenna. The balanced antenna minimizes susceptibility to limited available ground plane and limited ground connections between the modem card and a host device, such as laptop computer. The balanced antenna may be a dipole antenna, loop antenna, capacitively loaded antenna, or any other suitable balanced antenna.

Abstract: The present invention relates to a chip carrier (15) for contacting with a chip (16) and an antenna (13) disposed on an antenna substrate (17, 54, 61), wherein the chip carrier features a strip-shaped carrier substrate (18) which is provided with a chip contact arrangement (29) located at a distance from longitudinal ends (25, 26) of the carrier substrate for electrical contacting with a chip and which is provided with two antenna contact surfaces (27, 28) having the chip contact arrangement therebetween for electrical contacting with the antenna, wherein the chip contact arrangement and the antenna contact surfaces are located on an application surface (31) of the chip carrier and at least one insulation surface (20) is formed on the application surface (20) between the chip contact arrangement and the antenna contact surfaces.

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: The present invention relates to management of information relating to medical fluids, containers therefore, and medical fluid administration devices for administering such medical fluids to patients. Data tags (e.g., RFID tags) are generally associated with containers of the invention and may be electromagnetically read from and/or written to using an electromagnetic device, for example, that may be associated with a medical fluid administration device of the invention.

Abstract: An orientation-independent antenna presents a circular polarization characteristic to incoming waves such that these waves are detected regardless or polarization and angle of arrival. The antenna includes crossed vertical loops and a horizontal loop, with the loops being phased to provide the circular polarization characteristic. In one embodiment, the antenna includes a number of elements on the faces of a cube, or the elements are positioned on the surface of a sphere. In another embodiment, the antenna is given both a right hand circular polarization characteristic and a left hand circular polarization characteristic in two different channels to provide for double the data throughput.

Abstract: Apparatus including: an antenna configured for efficient far field communication at a first frequency; an inductive element including a plurality of series-connected coiled portions, including a first coiled portion and a second coiled portion, wherein the inductive element is configured to provide near field communication at a second frequency; and at least one reactive element parallel connected between the first coiled portion and the second coiled portion, wherein the at least one reactive element has a lower impedance at the first frequency than at the second frequency.

Abstract: A complex antenna which receives or transmits a plurality of electromagnetic waves of different frequencies is provided. A first one of the electromagnetic waves is an alternating magnetic flux. The complex antenna includes a first antenna which receives or transmits the alternating magnetic flux. The complex antenna includes a second antenna arranged such that the first antenna and the second antenna overlap as viewed from a direction in which the alternating magnetic flux penetrates the first antenna. The second antenna is adapted for reducing an induction effect of a current which is induced by the alternating magnetic flux and flows in the second antenna.

Abstract: A load control device for controlling the power delivered to an electrical load has a power switch, a transmitter and/or a receiver in communication with a controller for the switch; a mounting yoke for a traditional style faceplate; an actuator button extending through an opening of the faceplate; an antenna receiving a first signal from a remote control device and/or transmitting a second signal to a remote control device, the receiver coupling the first signal from the antenna to the controller for controlling the switch, the transmitter coupling the second signal from the controller to the antenna. The antenna has a printed circuit board disposed perpendicular to the yoke; first and second magnetically coupled conductive loops; the antenna disposed inside and behind the actuator button and extending through and beyond the opening of the faceplate.

Abstract: In accordance with a preferred embodiment of the invention, an antenna structure is provided having one or more antennae arranged so as to read all possible orientations of a randomly placed tag. Also provided in accordance with a preferred embodiment of the invention, is a method of configuring one or more antennae composed of the steps of: identifying the “dead zones” of each discrete antennae used, and orienting each antennae such that there are no “dead zones” common to all antennae. The unique antenna structure (and corresponding method) has particular application in tag reader antenna systems for use in RFID (radio frequency identification) applications (13.56 MHz) and the like. In accordance with an exemplary embodiment, multiple RF (radio frequency) antennae are utilized as part of an intelligent station to track items tagged with radio frequency identification (RFID) tags.

Abstract: A method for reducing a resistance of an antenna circuit capable of obtaining a desired property by reducing wiring resistance to a suitable value while ensuring inductance is provided. An antenna circuit is disposed to a transponder having a carrier frequency band of 13.56 MHz. The antenna circuit is formed of a prescribed base material and two antenna conductors each of which is formed of the same conductor pattern forming an antenna coil, formed on respective front and back surfaces of the base material by electrically parallel connection. Each of the two antenna conductors has a thickness of greater than equal to 5% and less than 50% of an overall thickness formed of the two antenna conductors and the base material.

Abstract: An electronic entity includes an electronic circuit (21) having at least one first terminal (22) and a second terminal (24) to which an antenna is connected. The antenna includes a conducting element (26) electrically connected to the first terminal (22) of the electronic circuit (21) and includes a resonator (28) insulated from the conducting element (26) at the antenna, electrically connected to the second terminal (24) of the electronic circuit (21) and coupled to the conducting element (26).

Abstract: Provided are a radio frequency identification (RFID) antenna and an RFID tag including the RFID antenna. The RFID antenna includes an electric conductor and a conductor that radiate electromagnetic fields isotropically. The RFID tag including the RFID antenna can be installed on a metal plate.

Abstract: A logistical passage measurement system comprising an excitation unit having dual loop antennae, and a control box for exciting said antennae in order to generate a non-zero magnetic field at each point and each orientation in an immediate vicinity of said antennae.

Abstract: The antenna includes a power-feeding radiation electrode and a non-power-feeding radiation electrode are provided adjacent to each other with a gap therebetween on the flexible substrate, which also is bendable. The power-feeding radiation electrode is used to perform antenna operation in a basic mode in which resonant operation is performed at a basic frequency and antenna operation in a high-order mode in which resonant operation is performed at a frequency higher than the basic frequency. The power-feeding radiation electrode includes a loop path configured such that the power-feeding radiation electrode first extends in a direction away from a power-feeding end and an open end is bent toward the power-feeding end. The non-power-feeding radiation electrode has one end serving as a ground-side end and the other end serving as an open end.

Abstract: A method is disclosed of forming on a moving surface an auxiliary antenna for an RFID tag. The method includes the steps of providing a webstock of polymeric material including a conductive film, conveying the webstock with the moving surface, and applying the conductive film to the moving surface in a shape corresponding to the auxiliary antenna. The moving surface may include cardboard in a roll manufacturing process. Depending on the thickness of the auxiliary antenna the step of applying the conductive film may include cold or hot stamping. Apparatus for forming an auxiliary antenna for an RFID tag is also disclosed.

Abstract: To attain sensitivity not deviating in any of XYZ directions. A three-axis antenna with a cross-shaped core 2 having a pair of X-axis arms 22a, 22b projecting in the X-axis direction in an orthogonal coordinate system and a pair of Y-axis arms 23a, 23b projecting in the Y-axis direction orthogonal to aforementioned X-axis direction, and having Z-axis winding wire 26 provided in a substantially rectangular frame shape outside the head sections of aforementioned X-axis arms 22a, 22b and the head sections of aforementioned Y-axis arms 23a, 23b. Aforementioned Z-axis winding wire is housed in a case having a bottom so as to cover the entire head surfaces of X-axis arms 22a, 23b and head surfaces of Y-axis arms 23a, 23b in aforementioned cross-shaped core 2.

Abstract: An antenna includes inductance elements that are magnetically coupled together, an LC series resonant circuit that includes one of the inductance elements and capacitance elements, and an LC series resonant circuit that includes another of the inductance elements and capacitance elements. The plurality of LC series resonant circuits are used to radiate radio waves and are used as inductances of a matching circuit that matches an impedance when a power supply side is viewed from power supply terminals and a radiation impedance of free space.

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: An antenna is provided for operating within the electrically small antenna regime (i.e., ka?0.5), and having bandwidth performance quite close to fundamental limits. The antenna of the invention, in various embodiments, is based upon spherical resonator structures that are characterized by a performance factor (Q/Qchu,) close to 1.5. The antenna combines a resonator structure determined according to the method of the invention with an appropriate transmission line feeding arrangement, such that the resonator effectively couples the transmission line mode to the radiating spherical harmonic mode in an impedance-matched manner.

Abstract: A method and apparatus for identifying and tracking instruments, in multiple instrument environments such as an operating room or a garage. Each instrument or disposable has attached thereto an identifying tag, such as an RFID tag. Each plane or location the instruments or disposables are placed on, comprises an antenna and thus continuously identifies the tools. In order for the antenna to work in a metallic environment, the antenna is equipped with a metallic board underneath, which insulates form other metals, and in order for the metallic board not to absorb all the energy, a spacing layer is placed between the metal board and the antenna. Flat antennas may be implemented as a collection of wire loops, overlapping in about 20% of one of their dimensions.

Abstract: A proximity antenna includes a wiring pattern wound in a predetermined direction in a horizontal plane from a signal end to a ground end and a wiring pattern wound in a direction opposite to the predetermined direction in a horizontal plane from a signal end to a ground end, in which the wiring pattern and the wiring pattern are apposed in a vertical direction. The characteristics of a spiral coil having several turns can be thus obtained by a one-turn wiring width, and an installation space for other components, larger than a conventional installation space, can be therefore secured.

Abstract: The size of an antenna coil is reduced, and it is possible to prevent a lowering of the reception sensitivity due to a difference of the arrangement position of the antenna coil. On a winding frame of a ferrite core, a first coil and a second coil are wound in such a manner that their winding axes orthogonally intersect each other. A third coil is wound around an outer circumference of the first coil and the second coil in such a manner that the third coil's winding axis orthogonally intersects the winding axes of the first coil and the second coil.

Abstract: Disclosed is an antenna which has a simple structure and a small null angle, and which can achieve communication using a circularly-polarized wave. The antenna includes a conductive wire which is arranged in loops in such a way as to form a cross shape. The part at which two line portions projecting outward from the center portion define a right angle is included in the loop path of the conductive wire. This part allows the antenna to transmit and receive an electromagnetic wave in all directions and have a circular polarization characteristic.

Abstract: A coil arrangement (32) comprises individual coil segments (381, 382, . . . , 38n) disposed adjacently one another adjacent an examination field (14). At least one radio frequency shield (40) is associated with the coil segments (381, 382, . . . , 38n). The radio frequency shield (40) has a first portion (70), which shields the associated coil segments from adjacent magnetic field and magnetic field gradient generating coils (20, 30), and side elements (72, 74), which shield the coil segments or groups of the segments from each other.

Abstract: Embodiments of the invention provide a method, system and apparatus for detecting a merchandise marker in which a first antenna has a circuit having a first loop defining a first area and a second loop defining a second area substantially coplanar with the first area. A second antenna is substantially coplanar and orthogonally positioned with respect to the first antenna. The second antenna has a circuit having a third loop defining a third area and a fourth loop defining a fourth area substantially coplanar with the third area.

Abstract: The invention relates to an antenna system (AS) for an implantable device like a cardiac pacemaker or a cochlear implant. The antenna system comprises at least two DD coil units (L1, L2) coupled with their terminals (T1 1, T21, T 12, T22) to a control circuit (CC) which can selectively connect the coil units in series or in anti-series, corresponding to an “operational mode” and a “safety mode”, respectively. In the operational mode, magnetically induced voltages (U1, U2) in the coil units add, while they subtract and therefore completely or partially compensate in the safety mode. Thus the implantable device can be protected from damage due to extraordinarily large changing rates of external magnetic fields as they exist for example during MRI examinations.

Abstract: An antenna module and a portable communication terminal equipped with the antenna module are provided. The antenna module has a space-saving design, and also has both a capability for long communication distance for a tag function and a capability for wide communication range for a reader/writer function. A first antenna coil (11) for communication with a reader/writer and a second antenna coil (12) for communication with an IC tag are disposed on a base substrate (10). The first antenna coil (11) is disposed in an outermost periphery section of the base substrate (10) so that a communication distance is attained. The second antenna coil (12) is disposed within an inner periphery of the first antenna coil (11) so as to achieve overall size reduction of the module.

Abstract: A near field apparatus comprises a Radio Frequency (RF) coil including at least one of a shorting bridge from a first point to a second point along an electrical path of the RF coil and/or a discontinuity in the electrical path of the RF coil.

Abstract: Wireless repeaters comprising antennae having high electrical isolation are presented. Multi-band antennae are placed on opposing sides of a conductive ground plane to achieve high electrical isolation, preferably higher than 30 dB. The antennae are preferably placed at a distanced from the ground plane that is less than 0.5 wavelengths of a frequency associated with frequency bands to which the antennae are responsive. The presented antennae system reduces the minimum amount of isolation required for stable operation.

Abstract: A method of making a double-sided antenna for high frequency devices is discussed. The method includes forming metal patterns on both sides of a substrate having pre-formed connection holes. Preferably, the metal patterns are formed using a printing ink having a precursor and a solvent. In one embodiment, the metal patterns include coils which are formed on both sides of the substrate. In one embodiment, shunt bars are used to speed up the process of making the metal patterns. The shunt bars are punched out at the end of the process to electrically isolate the metal patterns.

Abstract: A passive wireless corrosion sensor is disclosed. A circuit is configured to provide a signal response when energized. An antenna is configured to wirelessly receive energy for energizing the circuit and to receive the signal response from the circuit and transmit the signal response. A corrosion sensitive connector interposes the circuit and the antenna. The corrosion sensitive connector conducts the energy from the antenna to the circuit and conducts the signal response from the circuit to the antenna when in a substantially non-corroded state. The corrosion sensitive connector creates an effectively non conducting link between the antenna and the circuit when in a substantially corroded state.

Abstract: A radio apparatus having a casing and an antenna is provided. The casing has first, second and third faces. The second face and the third face correspond to a side face and another side face of the first face, respectively. The antenna is formed by a conductive line in such a way that the conductive line forms a first loop shape, a second loop shape and a third loop shape, that the first loop shape includes a first portion and a second portion positioned adjacent to a third portion of the second loop shape and a fourth portion of the third loop shape, respectively, that directions of currents distributed on the first portion and the third portion if the antenna is fed are almost same, and that directions of currents distributed on the second portion and the fourth portion if the antenna is fed are almost same.

Abstract: A compact polarization agile antenna includes a dual-orthogonal loop structure which is excited by a single RF feed (21). The loop structure includes a pair of loops (8, 10), each loop is connected to ground (45) through a complex impedance via a solid state switch (41, 43). Current flows in the loop when the switch (41, 43) is closed. The switches (41, 43) and impedances (47, 49) in each leg are independently controlled. Additionally, the relative phase of the current in each leg can be controlled over a narrow bandwidth via a complex impedance for narrowband circular polarized applications. Using this approach, orthogonal linear, slant, or left-hand and right-hand circular polarizations can be generated.

Abstract: The invention relates to a multiple phase shifter for protecting individuals against electromagnetic waves. The invention comprises several phase shift modules which each comprise two identical or homothetic flat loops which are electrically connected by means of two inter-loop connection elements at a first opening in each of the loops and which are electrically insulated from one another with the exception of the inter-loop connection elements. Each module is electrically connected to another module by means of two inter-module connection elements and is essentially identical or homothetic to the other modules. The inter-module connection elements connect one of the loops of one module at a second opening in the loop to one of the loops of another module at a second opening in said loop. The modules are electrically insulated from one another with the exception of the inter-module connection elements.

Abstract: In one embodiment the present invention includes a radio frequency identification (RFID) system with a shorting loop. The shorting loop at least partially surrounds the antenna. The shorting loop distorts the electromagnetic field generated by the antenna to improve the definition of the border of the read region of the antenna. In this manner, the RFID system provides more accurate discrimination between RFID tags inside the read region versus RFID tags outside the read region (i.e., improves the accuracy of determining that a particular RFID tag is inside the read region).

Abstract: An antenna comprising a radiating element for transmitting and receiving communication signals is disclosed. A load and a feed are connectable to the radiating element and that the feed is spaced apart from the load. The radiating element is a planar loop having two free ends to which the load and the feed are connected. The load has two distal terminals, one of which is connected to one of the two free ends and the other is provided for connecting to one of grounding and another radiating element.

Abstract: The invention provides a coil part used for an antenna coil that improves the production rate and enhances its sensitivity. A coil part used in a antenna coil has a cross shape core that includes: a first winding frame part extending a first direction and being provided with a coil, and a second winding frame part extending a direction crossing the first direction and being provided with a coil. A first core including the first winding frame part is interlocked with a second core including the second winding frame part.

Abstract: Embodiments of a multi-axial antenna system and system for measuring subsurface formations are generally described herein. Other embodiments may be described and claimed. In some embodiments, the multi-axial antenna system comprising at least two co-located coils wound around a torroidal-shaped bobbin. Each coil generates a magnetic field in a mutually orthogonal direction. Signals provided to the coils may be adjusted to simulate a tilted-coil antenna system.

Abstract: An antenna includes inductance elements that are magnetically coupled together, an LC series resonant circuit that includes one of the inductance elements capacitance elements, and an LC series resonant circuit that includes another of the inductance elements and capacitance elements. The plurality of LC series resonant circuits are used to radiate radio waves and are used as inductances of a matching circuit that matches an impedance when a power supply side is viewed from power supply terminals and a radiation impedance of free space.

Abstract: The invention relates to a radio-frequency communication device comprising an inductive antenna in order to communicate with a transponder. According to the invention, the antenna is capable of establishing weak coupling with a transmitter which produces a magnetic field which is substantially homogeneous on the scale of the antenna and is also capable of establishing strong inductive coupling with a transponder located in the vicinity of the device, with the device comprising a transponder interrogation circuit comprising means of sampling and processing the signal on the antenna terminals which are capable of producing a reference signal as a function of said signal; modulation means capable of modulating the reference signal; and application means capable of applying the modulated signal to the antenna terminals.

Abstract: Exemplary embodiments are directed to wireless power transfer to an electronic circuit including a wireless charging receive antenna comprising a first loop of an energy receiving conductor and at least another loop of said energy receiving conductor electrically coupled to the first loop. The loops form a multi-turn loop antenna to resonate at a wireless charging frequency and provide wirelessly received power to the electronic device. The multi-turn loop antenna is configured for affixing to a housing of the wireless device.

Abstract: In addition to an FM reception antenna element for receiving an FM radio wave and an FM receiver connected to the FM reception antenna element, a mobile object is provided with a first antenna element for receiving a satellite signal, a signal processing unit connected to the first antenna, and a second antenna element connected to the signal processing unit. The signal processing unit processes the satellite signal into an FM signal. The second antenna element emits the FM signal as the FM radio wave that may be received in the FM reception antenna and processed by the FM receiver in the manner known in the art.

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.