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 a generally annular shape with an opening. At least one reflector element is spaced-apart from the antenna element for reflecting electromagnetic waves generally towards the antenna element.

Abstract: A circular polarized signal receiving antenna includes 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 corresponds 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 coupled to the active element.

Abstract: A mobile wireless communications device may include a housing having an upper portion and a lower portion, a dielectric substrate carried by the housing, circuitry carried by the dielectric substrate, and an audio output transducer carried by the upper portion of the housing and connected to the circuitry. The device may further include a user input interface carried by the housing and connected to the circuitry, and at least one auxiliary input/output device carried by the upper portion of the housing and connected to the circuitry. An antenna may also be carried within the lower portion of the housing comprising a pattern of conductive traces on the dielectric substrate.

Abstract: A loop antenna includes a dielectric substrate taking a cuboid form, and a loop part composed of a metal that covers two pairs of facing surfaces of the dielectric substrate. The loop part is formed by leaving a blank portion at the center of one surface of the pair of facing surfaces having a wider area. In the blank portion, a feeding point to an LSI chip and a capacitance part connected to the loop part in parallel to the feeding point are formed. The capacitance part is provided to compensate for an internal capacitance of the LSI chip so that a small LSI chip matches the antenna. A convex part having a length is arranged with a gap within a corresponding concave part to form a large capacitance.

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: An antenna sheet is provided with a flexible substrate, and an antenna coil, which is connected to a terminal section of an external IC module having an IC chip and is arranged on the substrate. On the substrate, a storing section that stores at least a part of the IC module is formed.

Abstract: Metamaterial structures are taught which provide for the modulation of terahertz frequency signals. Each element within an array of metamaterial (MM) elements comprises multiple loops and at least one gap. The MM elements may comprise resonators with conductive loops and insulated gaps, or the inverse in which insulated loops are present with conductive gaps; each providing useful transmissive control properties. The metamaterial elements are fabricated on a semiconducting substrate configured with a means of enhancing or depleting electrons from near the gaps of the MM elements. An on to off transmissivity ratio of about 0.5 is achieved with this approach. Embodiments are described in which the MM elements incorporated within a Quantum Cascade Laser (QCL) to provide surface emitting (SE) properties.

Abstract: The present invention antenna preserves the general size and form factor of the prior art loop antennas while providing the benefits of multiple point feeds at less than one wavelength in separation of feed points. The invention antenna obtains omnidirectional radiation and improved efficiency over the prior art by way of dual slotted, open ended cylindrical or rectangular box structures fed with high impedance feed lines.

Abstract: Conventionally, people have to go to the place where a measurement instrument for health data is, to obtain health data and the like. Further, even when using a portable measurement instrument, people have to manage data by themselves, thus health data cannot be managed rapidly. According to the invention, a modulating circuit, a demodulating circuit, a logic circuit, a sensor circuit, and an antenna circuit are provided over an insulating substrate, thereby data sensed by the sensor circuit is transmitted wirelessly. According to the invention, health data on the living body (for example a human body) is sensed and can be rapidly detected.

Abstract: A one-wavelength loop antenna includes a looped antenna element having a length equivalent to one wavelength related to communication; and a feeding cable for feeding current to a feeding point on the antenna element, wherein an inner conductor is disposed inside an outer conductor in a section between the feeding point and an extraction position of the feeding cable distanced from the feeding point by ? wavelength or more, at least one of the outer and inner conductors functioning as the feeding cable.

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 receiver device for receiving audio signals from a remote source has 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. The antenna is designed as a printed board circuit with a loop-shaped conductor on an at least partially flexible insulating substrate. A first portion defines a first plane and a second portion defines a second plane, the first plane and second planes being oriented at an angle of 60° to 120° relative to each other.

Abstract: A system comprising at least one antenna and a circuit, wherein the circuit is at least in part not a semiconductor chip or a die. The at least one antenna and the circuit are arranged on a package. Alternatively described is a system comprising at least one antenna and at least one circuit, wherein the at least one antenna and the at least one circuit are arranged on a package, wherein the at least one circuit performs a radio-frequency and optionally a base-band and/or a digital functionality.

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: A receiver device for receiving audio signals from a remote source has 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. The antenna is designed as a printed board circuit with a loop-shaped conductor on an at least partially flexible insulating substrate. A first portion defines a first plane and a second portion defines a second plane, the first plane and second planes being oriented at an angle of 60° to 120° relative to each other.

Abstract: According to the method of stripping a portion of a wire of the invention, the insulated wire including the wire core are first flattened before the insulation is stripped away. The flattening eases the stripping as the insulation is partially cracked and dissociated of the wire core, and the stripping is more efficiently applied on a flat surface. A wire stripping machine and a transponder antenna with stripped portions are also claim as being part of the invention.

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 easy-to-fabricate and relatively strong circularly polarized loop antenna of a simple construction is built. A circularly polarized loop antenna 1 has a loop section 11, which is made up of a loop-shaped conductor whose length is equal to 1 wavelength (?) of the transmitted and received signals, and a coupling section 12, made up of a conductor, is connected thereto at a prescribed point. The coupling section 12 is shaped such that it is connected to the loop section 11 at a connection point 201 at one end and extends along the loop section 11 throughout a length equal to ?/4. A reflective plate 2 is placed in a predetermined position in the vertical direction from the circumferential plane of the loop section 11, in parallel to the circumferential plane. In addition, the other end of the loop section 11 is connected to external circuitry carrying out the processing of signals transmitted and received via a first feed conductor 13 and a second feed conductor 14 and operates as a feed point, 200.

Abstract: The present invention relates to a multiband folded loop antenna comprising a dielectric substrate, a ground plane, a radiating portion and a matching circuit. The ground plane is located on the dielectric substrate and has a grounding point. The radiating portion comprises a supporter, a loop strip, and a tuning patch. The loop strip has a length about a half-wavelength of the central frequency of the antenna's first resonant mode. The loop strip has a feeding end and a grounding end, with the grounding end electrically connected to the grounding point on the ground plane. The loop strip is folded into a three-dimensional structure and is supported by the supporter. The tuning patch is electrically connected to the loop strip. The matching circuit is located on the dielectric substrate with one terminal electrically connected to the feeding end of the loop strip and another terminal to a signal source.

Abstract: To improve vertical efficiency, the present invention provides a loop antenna for a wireless network, which includes a feeding terminal for receiving a feeding signal, a shorting-to-ground terminal for providing grounding, a metal bar formed on a first plane and surrounding a center point, a first metal arm formed on a second plane associated with the first plane and coupled between an terminal of the metal bar and the feeding terminal, and a second metal arm formed on a third plane associated with the first plane and coupled between another terminal of the metal bar and the shorting-to-ground terminal.

Abstract: An antenna assembly is disclosed. The antenna assembly includes a dual band vertical loop wire antenna extending from a printed circuit board positioned over a ground plane, wherein the wire antenna includes: at least one coiled section, at least one straight wire section, and at least one feeding post section.

Abstract: A loop antenna may include first and second electrical conductors arranged to define a circular shape with first and second spaced apart gaps therein. Opposing portions of the first and second electrical conductors at the first gap may define a signal feedpoint, and opposing portions of the first and second electrical conductors at the second gap may define an impedance tuning feature. The second gap may be circumferentially spaced from the first gap less than ninety degrees, and the second gap may be greater than the first gap to provide a predetermined impedance. A coaxial transmission line may form a feed inset into the loop conductor. The loop antenna may be planar and have a reduced size for ease of manufacture and use, and it may provide an isotropic radiating pattern at a predetermined operating frequency, which may avoid the need for antenna aiming.

Abstract: A loop antenna includes a dielectric substrate taking a cuboid form, and a loop part composed of a metal that covers two pairs of facing surfaces of the dielectric substrate. The loop part is formed by leaving a blank portion at the center of one surface of the pair of facing surfaces having a wider area. In the blank portion, a feeding point to an LSI chip and a capacitance part connected to the loop part in parallel to the feeding point are formed. The capacitance part is provided to compensate for an internal capacitance of the LSI chip so that a small LSI chip matches the antenna. A convex part having a length is arranged with a gap within a corresponding concave part to form a large capacitance.

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: An antenna assembly includes an antenna. The antenna assembly includes at least one interrupted loop or rod of electrically conducting material and a printed circuit board (PCB). At least a part of the PCB together with the at least one interrupted loop or rod of electrically conducting material forms the antenna.

Abstract: The subject is to provide an information processing apparatus serving as a wearable device, which makes it possible not only to reduce the divergence of data toward the peripheral spaces, but also to eliminate the electrode to be contacted to the surface of the living body when wearing it, and further, which is superior in the transmitting efficiency.

Abstract: A tag antenna which, within a limited area, resonates with an RFID LSI chip having a capacitance component, and an RFID tag on which such a tag antenna is mounted, and which has an antenna and an LSI chip connected in parallel to the antenna are disclosed; the antenna has a feed terminal connected to the LSI chip, a loop antenna connected to the feed terminal, and a bypass conducting path which bypasses the loop of the loop antenna.

Abstract: Radio-frequency identification (RFID) tag antenna, tags and communications systems using the same are presented. The RFID tag antenna includes a patterned conductive loop having a plurality of longitudinal conductive sections and a pair of transverse conductive sections connecting to each end of the longitudinal conductive sections to serve as a matching network. A pair of extended conductive arms is electrically connected to the patterned conductive loop via two nodes. A bonding pad with an RFID chip disposed thereon is arranged at the central area of the pair of extended conductive arms.

Abstract: A fabrication method of a radio frequency identification (RFID) antenna coil is provided. First, a substrate is processed by a surface modified procedure, to form a self-assembly membranes (SAMs) on a surface of the substrate. A catalyst is sprayed on the SAMs of the substrate according to patterning. After that, the first electroless plating procedure is first carried out for the substrate to generate a magnetic metal layer corresponding to the wiring pattern on the catalyst, and the second electroless plating procedure is then carried out for the substrate to generate the metal layer on the magnetic metal layer.

Abstract: The invention concerns a method for making smart cards capable of operating with or without contact called mixed cards and contactless smart cards. In order to avoid the risk of deteriorating the antenna the method consists in producing an antenna comprising at least two turns, on a support sheet, said antenna having its turns located outside the connecting pads, and in providing an insulating bridge so as to connect each of the antenna ends to a connection pad respectively.

Abstract: An antenna, including a dielectric carrier having a bounding surface, and a conductive monopole resonant at a first frequency, the monopole having at least one conducting section mounted on the bounding surface. The antenna further includes a labyrinthine conductive coupling element mounted on the bounding surface so as to encompass the dielectric carrier. The coupling element is located with respect to the conductive monopole so as to transfer from the conductive monopole a second frequency lower than the first frequency.

Abstract: An antenna (1, 41) for an RFID transponder (20), comprises a first antenna arm (2, 42), a second antenna arm (3, 43), and a dc-loop structure (14) electrically connected to the first antenna arm (2, 42) at a first connection (15) and to the second antenna arm (3, 43) at a second connection (16). The first antenna arm (2, 42) comprises a first open end (7) and a first terminal end (8) to be connected to an electronic circuit (21) of an RFID transponder (20) and the second antenna arm (3, 43) comprises a second open end (12) and a second terminal end (13) to be connected to the electronic circuit (21).

Abstract: An antenna includes a loop radiating element, and first and second radiating arms. The loop radiating element includes first and second segments, each of which has opposite first and second ends, and an intermediate segment that interconnects the second ends of the first and second segments thereof. The first and second radiating arms extend outwardly and respectively from the first and second ends of the first segment of the loop radiating element.

Abstract: Provided is a small monopole antenna having a loop feeder. The small monopole antenna having a loop feeder includes: a loop element forming a loop along a predetermined plane and having a loop feeder at the center thereof; a non-feeding type monopole antenna element including one end connected to a wire of the loop element and other end connected to a ground unit by being bended at the center of the loop element; a ground unit for grounding other end of the non-feeding type monopole antenna; and a first connecting unit for connecting the non-feeding type monopole antenna to an external device for feeding the loop feeder of the loop element through the non-feeding type monopole antenna.

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

Abstract: 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: 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 wearable article of clothing and the like is configured to be worn by a person underwater or underground; An antenna with at least one loop, is coupled to the wearable item. The antenna provides transmission or receipt of electromagnetic signals and has a size and geometry that maximizes antenna transmission area while minimizing a restriction on movement by the person wearing the wearable article. The antenna carries an alternating current that provides conductive attenuation and has three different field components. Each field component has a different geometric loss when moving a distance r from the antenna. R is a propagating distance from the antenna.

Abstract: The invention relates to an antenna structure for coupling electromagnetic energy between a chip and an off-chip element, including a first resonant structure disposed on or in a chip. The first resonant structure is configured to have a first resonant frequency. The antenna structure also includes a second resonant structure disposed on or in an off-chip element. The second resonant structure is configured to have a second resonant frequency substantially the same as the first resonant frequency. The first resonant structure and the second resonant structure are mutually disposed within a near field distance of each other to form a coupled antenna structure that is configured to couple electromagnetic energy between the chip and the off-chip element. The electromagnetic energy has a selected wavelength in a wavelength range from microwave to sub-millimeter wave. The invention also relates to a method of calculating dimensions for a highly coupled antenna structure.

Abstract: The present invention is related to a coupled-fed multi-band loop antenna. The antenna comprises a dielectric substrate, a ground plane located on the dielectric substrate and has a grounding point, a radiating portion which comprise a supporter, a coupling trip and a loop strip, and a matching circuit. The coupling strip and loop strip are both located on the supporter, with the coupling strip surrounded by the loop strip. The length of loop strip is about 0.25 wavelength of the antenna's first resonant mode. The loop strip has a first end paralleling with the coupling loop, a second end and a shorting point near the second end and electrically connected to the grounding point on the ground plane. The matching circuit is on the dielectric substrate. One terminal of the matching circuit is connected to the coupling strip, and the other is connected to a signal source.

Abstract: A broadband antenna is capable of generating an upper resonant mode (at about 700 MHz) from a first radiating arm and a lower resonant mode (at about 500 MHz) from a second radiating arm. The first and second radiating arms are bent at least one time. An open end of the second radiating arm is extended toward an open end of the first radiating arm with a predefined distance there between. The predefined distance can be adjusted to improve the impedance matching of lower resonant mode, which can be further combined with the upper resonant mode to achieve a broad bandwidth covering the complete spectrum of digital TV channels (470-862 MHz).

Abstract: An antenna capable of receiving circularly polarized waves and performing impedance matching between the antenna and an IC (integrated circuit) of a semiconductor device, and a semiconductor device having such an antenna. The antenna has a first conductor pattern with a loop configuration having a cut section, a second conductor pattern, a third conductor pattern, and a feeding section. A first end portion of the second conductor pattern and a first end portion of the third conductor pattern are connected to the first conductor pattern. A second end portion of the second conductor pattern and a second end portion of the third conductor pattern are connected to the feeding section. The total length of the second conductor pattern is longer than the total length of the third conductor pattern, and the second conductor pattern is placed closer to the cut section than the third conductor pattern is.

Abstract: The present invention relates to a multiband folded loop antenna comprising a dielectric substrate, a ground plane, a radiating portion and a matching circuit. The ground plane is located on the dielectric substrate and has a grounding point. The radiating portion comprises a supporter, a loop strip, and a tuning patch. The loop strip has a length about half wavelength of the antenna's lowest resonant frequency. The loop strip has a feeding end and a grounding end, with the grounding end electrically connected to the grounding point on the ground plane. The loop strip is folded into a three-dimensional structure and is supported by the supporter. The tuning patch is electrically connected to the loop strip. The matching circuit is located on the dielectric substrate with one terminal electrically connected to the feeding end of the loop strip and another terminal to a signal source.

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: An identification tag, such as an EAS tag or an RFID tag, comprising a loop antenna having a substantially triangular shape and an electronic component connected to and positioned within the loop antenna, the antenna and component comprising a flexible metal structure disposed on one face of a flexible substrate, the flexible substrate extending away from one side of the triangular loop antenna to form a flap such that, when the tag is positioned on a face of a package close to its edge, the flap can be wrapped around the edge of the package and onto its other face.

Abstract: An antenna includes a central loop and four adjacent coplanar eccentric loops. The central loop creates a magnetic field that is essentially perpendicular to the antenna. The centres of gravity of the four eccentric loops are essentially located on the periphery of the central loop and the eccentric loops are supplied in such a way as to predominantly create a rotating field in a plane parallel to the plane of the antenna. The eccentric loops can be associated in pairs of non-adjacent loops in such a way as to generate electromagnetic fields of opposite phases in the respective pair. In this way, the two loops of a pair can be connected such that the same current flows through them in opposite trigonometric directions. A radiofrequency generator can supply first and second excitation signals alternately on two outputs, respectively to the central loop and to the eccentric loops.

Abstract: An antenna system is provided. The antenna system comprises a first antenna with a first operating frequency and a second antenna with a second operating frequency. The second antenna has a first near field with a first near region in which the first antenna is disposed and a second near region. The second antenna has a first gain in the first near region which is lower than a second gain in the second near region. The first gain and the second gain are both at a same one of the first operating frequency and the second operating frequency.

Abstract: This disclosure describes a radio frequency identification (RFID) tag that includes a three-dimensional (3D) loop antenna. The 3D loop antenna includes a first conductive portion having a length and width that substantially exceed a thickness. The length and width of the first conductive portion substantially lie in a first plane. The 3D loop antenna includes a second conductive portion having a length and width that substantially exceed a thickness. The length and width of the second conductive portion substantially lie in a second plane that is substantially parallel to the first plane. An RFID circuit electrically connected to the loop antenna excites a current through the first and second conductive portions in a current loop that lies in a third plane that is not substantially parallel to the first and second planes. In some instances the third plane may be substantially perpendicular to the first and second planes.

Abstract: An antenna includes a loop radiating element, and first and second radiating arms. The loop radiating element includes first andsecond segments, each of which has opposite first and second ends, and an intermediate segment that interconnects the second ends of the first and second segments thereof. The first and second radiating arms extend outwardly and respectively from the first and second ends of the first segment of the loop radiating element.

Abstract: An RFID antenna that can be disposed in a space-saving manner. The RFID antenna comprises an outermost peripheral conductive line that is bent in a manner extending along sides of a generally rectangular shape having a predetermined size, and a power-feeding conductive line that is disposed close to an inner periphery of the outermost peripheral conductive line in a manner extending parallel therewith, and is electrically connected to the outermost peripheral conductive line at ends thereof, the power-feeding conductive line including a portion thereof formed with a feeder part. Therefore, the antenna fits into a rectangle having a predetermined size, such as a card size.