Abstract: In accordance with some embodiments, there is provided an apparatus. The apparatus includes a conductive loop; a first conductive member electromagnetically coupled to the conductive loop and galvanically coupled to a radio frequency circuit; a second conductive member arranged across and electromagnetically coupled to the conductive loop; and a third conductive member arranged across and electromagnetically coupled to the conductive loop, the third conductive member being spaced apart from the second conductive member and electromagnetically coupled to the first conductive member.

Abstract: A radio frequency identification (RFID) antenna is disclosed. The RFID antenna may include: a substrate; a radiator disposed on the substrate, the radiator comprising a first electrical conductor and a second electrical conductor that perpendicularly intersect a straight edge of the radiator, the first electrical conductor and the second electrical conductor being symmetrical to each other with respect to a central point of the radiator; a loop disposed on the substrate; and a stub disposed on the substrate between the loop and the central point of the radiator.

Abstract: An antenna apparatus includes a first feed line and a second feed line spaced apart from each other, a ground plane surrounding a portion of each of the first and second feed lines, a first end-fire antenna pattern and a second end-fire antenna pattern having different sizes spaced apart from each other, spaced apart from the ground plane, and respectively electrically connected to the first and second feed lines, and a first feed via and a second feed via respectively electrically connecting the first and second feed lines to the first and second end-fire antenna patterns. The first feed via extends away from the first feed line in one direction, and the second feed via extends away from the second feed line in another direction different from the one direction.

Abstract: In a method for reading from an RFID-tagged article and an RFID system, information is accurately read from an RFID tag while interference with other devices is prevented by use of a compact and simple configuration. An article is conveyed on a conveyor belt. Also, an RFID tag is attached to the article. Information on the RFID tag is read by a leaky coaxial cable that is a stationary read/write antenna in a vicinity of the conveyor belt. The leaky coaxial cable is above the conveyor belt and at least a portion of the cable traverses the conveyor belt.

Abstract: Disclosed is a magnetic resonance imaging (MRI) apparatus with a spirally extended monopole antenna structure whereby magnetic field homogeneity is improved. The apparatus includes: a cylinder body 110; a plurality of monopole antennas forming an array, the antenna being spirally arranged along a surface of the cylinder body 110 at a predetermined inclination angle relative to a central axis of the cylinder body 110; a ground plate 130 in which ends of the monopole antennas are arranged on one surface of the ground plate 130 in a circular arrangement; and a plurality of coaxial cables 140 in which signal lines thereof are respectively connected to the monopole antennas and ground lines thereof are connected to the ground plate 130.

Abstract: The present invention is related to a horizontally polarized wave antenna using a serial-feed mode. The antenna includes: a feeder line configured to receive a current supplied from a feeder unit installed to a vehicle; and a patch antenna unit configured to radiate an electromagnetic wave in a horizontal direction while being installed to serially extend in a vertical direction with respect to the ground in a shape that is bent in a zigzag form. The patch antenna unit includes a plurality of first patch elements and a plurality of second patches. With this arrangement, it is possible to realize a horizontally polarized wave with a high resolution by composing vectors of currents flowing in respective patch elements while keeping the entire size of a radar system small.

Abstract: The embodiments described herein include a wireless-power-transmitting antenna formed from a stamped piece of metal. One such antenna includes: (i) a signal feed, defined by a single stamped piece of metal, that conducts a signal that controls wireless power transmission and (ii) resonators, each of which is defined by the single stamped piece of metal, that transmits power transmission waves in response to receiving the signal, where each resonator: (a) is planar with respect to a first plane and vertically aligned with each resonator, (b) is coupled to another resonator via curved sections of the stamped piece of metal that are in contact with the signal feed, each curved section extending along a second plane that is orthogonal to the first plane such that respective gaps are formed between each resonator, and (c) receives the signal via a respective curved section of the single stamped piece of metal.

Abstract: A resonant wireless energy transfer system comprises first and second antennas made up of dual parallel wire helixes wherein the wires are terminated by short wires. Voltage controlled variable capacitors are connected into the antennas to permit progressive variation between folded dipole and normal dipole operating modes such that optimum energy transfer can be achieved between the antennas over a wide range of antenna separation distances. A vehicle battery charging system using the above-described antennas is provided including an installation which allows purchase of battery charging power by members of the general public. In-vehicle energy transfer for sensors, computers, cell phones and the like is also described.

Abstract: High gain, multi-pattern multiple-input multiple-output (MIMO) antenna systems are disclosed. These systems provide for multiple-polarization and omnidirectional coverage using multiple radios, which may be tuned to the same frequency. The MIMO antenna systems may include multiple high-gain beams arranged (or capable of being arranged) to provide for omnidirectional coverage. These systems provide for increased data throughput and reduced interference without sacrificing the benefits related to size and manageability of an associated access point.

Abstract: A dipole antenna of the present invention is more compact and has a wider bandwidth as compared with a conventional dipole antenna. A dipole antenna (DP) includes antenna elements (E1) and (E2) on a single plane. (E1) includes a linear section (E1a) extending from an end of (E1) in a first direction, and a linear section (E1b) connected to (E1a) via a bending section (E1c), (E1b) extending from (E1c) in a direction opposite to the first direction. (E2) includes a linear section (E2a) extending from an end of (E2) in the direction opposite to the first direction, and a linear section (E2b) connected to (E2a) via a bending section (E2c), (E2b) extending from (E2c) in the first direction. (E1) and (E2) are such that (E1a) is provided between (E2a) and (E2b), and (E2a) is provided between (E1a) and (E1b).

Abstract: Provided is a planar antenna assembly attached to a ceiling, in which a structure of an antenna assembly for a mobile communication repeater is developed into a planar shape, thereby improving interior aesthetics. The planar antenna assembly attached to the ceiling according to an embodiment of the present invention may improve electric characteristics of radio waves to improve call quality.

Abstract: An antenna device, in which a dipole antenna (110), a first monopole antenna, and a second monopole antenna are disposed on an insulating board (140), wherein the dipole antenna (110) includes left and right elements connected to a power feeding section (150), and the left and right elements have: first portions extended from the power feeding section in a state of facing each other; and second portions extended from the first portions separately to left and right sides, and the first monopole antenna (120) connects to the power feeding section and extends toward the second portion of the left element in the dipole antenna (110), and the second monopole antenna (130) connects to the power feeding section (150) and extended toward the second portion of the right element of the dipole antenna (110).

Abstract: The invention provides circuitry integrated into a silicon chip that measures aspects of an RF signal on a transmission line in order to provide data that is ultimately used by an antenna tuner circuit to substantially match the impedance of the antenna with that of the transmission line providing the RF frequency to be transmitted.

Abstract: An radio frequency identification (“RFID”) system and RFID tag that include a substrate body having a surface where the substrate body defines a plane of the tag, an RFID integrated circuit disposed on the surface of the substrate body, and an antenna that has an antenna pattern, which is disposed on the substrate body and in electrical communication with the RFID integrated circuit, the antenna generating a radiation pattern with maximum gain along an axis that is substantially coplanar with the tag.

Abstract: An antenna apparatus includes a dipole antenna, a first monopole antenna and a second monopole antenna, each formed in a form of a conductor pattern on an insulating substrate. A fifth portion of the first monopole antenna and a seventh portion of the second monopole antenna are formed to be adjacent to and to be substantially parallel to a grounding conductor provided outside the antenna apparatus. The fifth portion includes a loop portion, and the seventh portion includes a loop portion.

Abstract: An antenna including a high band generating assembly having a first end and a second end, the high band generating assembly including a feed point and a bifurcated conductive element coupled to the feed point and having an angularly bent tip, the feed point defining the first end of the high band generating assembly, the angularly bent tip defining the second end of the high band generating assembly, at least one low band generating assembly, the at least one low band generating assembly including the high band generating assembly and at least one pair of dipole arms extending from the bifurcated conductive element, and a balun portion coupled to the feed point.

Abstract: An antenna including: a conducting wire part which includes a first part extending in a first direction, a second part extending from an end of the first part in a direction crossing the first direction, and a third part extending from an end of the second part to face the first part, wherein lengths of the first and third parts are different from each other.

Abstract: A metal pipe includes a slot having a predetermined length in a longitudinal direction of the metal pipe and a wireless tag that is placed inside the metal pipe and includes a power feeding unit to feed electric power to the slot and an IC chip connected to the power feeding unit, thereby functioning as an antenna of the wireless tag. The metal pipe is thus managed by the wireless tag.

Abstract: A compact antenna and a communication apparatus using the same are provided. An antenna includes a strip-shaped conductor in which a plurality of strip-shaped m-th order elements, where m is an integer of 3 or more, are sequentially connected to one another. Herein n-th order elements constituting the strip-shaped conductor, where n is all integers equal to or more than 2 and equal to or less than m, are configured to be p n-th order elements into which an (n?1)-th order element is divided, where p is an integer of 3 or more, and the n-th order elements divided into p have bent shapes at respective boundary parts between the n-th order elements and are located so that a vector direction from one end of the (n?1)-th order element to the other end thereof does not vary. A compact high-performance antenna is obtained.

Abstract: Antenna apparatus and methods of using the same that employ a broadband, planar, single feed ultra high frequency satellite communication (UHF SATCOM) antenna device which may be mounted on composite or other non-metallic and non-electrically conductive surfaces. The antenna apparatus may be implemented using a single antenna feed and impedance matching network with a low profile antenna shape that optimizes over-the-horizon gain, with no requirement for a ground plane. The antenna apparatus may also be implemented to cover the entire UHF SATCOM frequency band using a single antenna feed.

Abstract: An exemplary antenna system for an electromagnetic wave includes a conductor having a first portion and a second bent portion. The exemplary antenna system includes a first transformer connected to the second bent portion and configured to invert current of the second bent portion relative to current received from the first portion. An exemplary method for conducting an electromagnetic signal includes conducting an electromagnetic signal through a first portion and a second bent portion of a conductor. The exemplary method includes inverting current of the signal of the second bent portion relative to current received from the first portion. A wave created by current of the first portion can be added to a wave created by current of the second bent portion.

Abstract: A low profile antenna has a meander length based on the full electrical wavelength of the signal being transmitted or received. The antenna can have either an open-loop structure or a closed-loop structure with a matching network. The low profile enables the antenna to be used in a card for a device such as a personal computer, personal digital assistant, wireless telephone and so on with minimal risk of the antenna breaking off, as compared with a prior art antenna having a higher height and thus more likelihood of being broken from its card.

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: A low-cost compact wideband antenna (200) has two triangular-shaped arms (500 and 510) formed by winding the conductive wire into a zigzag pattern. The two arms (500 and 510) form a compact bow-tie type antenna having equivalent electrical size larger then its mechanical dimensions. Two straight wires (530 and 540) are joined to, and electrically connected between two respective largest segment ends of two zigzag structures. The compact wideband antenna (200) is hidden inside the decorative household item (210) to provide antenna having external appearance appropriate for modern home furnishing setting with improved broadband characteristic across VHF and UHF bands but without the inconvenience of the large size.

Abstract: A mobile device includes a ground plane, a conductive housing disposed on the ground plane including a sidewall, a first conductive strip spaced apart from the conductive housing, and a second conductive strip electrically connecting the first conductive strip to the conductive housing.

Abstract: An open-ended two-strip meander line antenna, an RFID tag using the same and an antenna impedance matching method thereof are provided. The antenna includes: a radiating strip line for deciding a resonant frequency of the antenna; and a feeding strip line for providing a radio frequency (RF) signal to an element connected to the antenna, wherein ends of the radiating strip line and the feeding strip line are open.

Abstract: A wireless communication device coupled to a wave antenna that provides greater increased durability and impedance matching. The wave antenna is a conductor that is bent in alternating sections to form peaks and valleys. The wireless communication device is coupled to the wave antenna to provide wireless communication with other communication devices, such as an interrogation reader. The wireless communication device and wave antenna may be placed on objects, goods, or other articles of manufacture that are subject to forces such that the wave antenna may be stretched or compressed during the manufacture and/or use of such object, good or article of manufacture. The wave antenna, because of its bent structure, is capable of stretching and compressing more easily than other structures, reducing the wireless communication device's susceptibility to damage or breaks that might render the wireless communication device coupled to the wave antenna unable to properly communicate information wirelessly.

Abstract: An antenna assembly includes a ground plane and an element coupled to the ground plane. The element has a center point, a first element portion extending away from the center point on a first side of the center point for a first distance in a first direction, bending at a first approximately 180 degree bend, extending towards the center point for a second distance in a second direction, bending at a second approximately 180 degree bend, and extending away from the center point for a third distance in the first direction. The element also has a second element portion provided on a second side of the center point opposite the first element portion on the first side of the center point, the second element portion being substantially a mirror image of the first element portion.

Abstract: The invention concerns a meandered antenna comprising: a first meandered conductive element including a plurality of arms, two consecutive arms forming a meander; a second conductive element forming with the first conductive element a radiating two-wired line, the second conductive element including a plurality of arms engaged each between two consecutive arms of the first conductive element. The antenna is characterized in that it is designed to operate without ground element, in particular without ground plane.

Abstract: A planar dipole antenna is described. The antenna may include a ground element, a feed point, a matching element, and first and second radiating elements disposed on a substrate, and a feed point. The ground element may have a substantially rectangular shape and the feed point may be arranged adjacent to the ground element. The matching element may be connected to the feed point and may include a central bar connected to a first and second arm. The first and second arms may be substantially symmetrically disposed on the substrate in respect to the central bar. The first and second radiating elements may have substantially trapezoidal shapes and may be extend from the first and second arms of the matching element, respectively. The first and second radiating elements may be substantially symmetrically disposed on the substrate in respect to the central bar of the matching element.

Abstract: An exemplary antenna system for an electromagnetic wave includes a conductor having a first portion and a second bent portion. The exemplary antenna system includes a first transformer connected to the second bent portion and configured to invert current of the second bent portion relative to current received from the first portion. An exemplary method for conducting an electromagnetic signal includes conducting an electromagnetic signal through a first portion and a second bent portion of a conductor. The exemplary method includes inverting current of the signal of the second bent portion relative to current received from the first portion. A wave created by current of the first portion can be added to a wave created by current of the second bent portion.

Abstract: A versatile wire antenna that can be up to 80 percent shorter than traditional wire antennas—while still providing exceptional operating characteristics. The present invention is also more durable than traditional wire antennas, offers broadband and multi-band performance, eliminates tension on the wire components, does not require inductive elements, does not require end insulators or transmission-line feed-point insulators, has low noise characteristics, and offers the potential for significant static-discharge capability. Also disclosed is a method for constructing the present invention.

Abstract: A wireless communication device coupled to a wave antenna that provides greater increased durability and impedance matching. The wave antenna is a conductor that is bent in alternating sections to form peaks and valleys. The wireless communication device is coupled to the wave antenna to provide wireless communication with other communication devices, such as an interrogation reader. The wireless communication device and wave antenna may be placed on objects, goods, or other articles of manufacture that are subject to forces such that the wave antenna may be stretched or compressed during the manufacture and/or use of such object, good or article of manufacture. The wave antenna, because of its bent structure, is capable of stretching and compressing more easily than other structures, reducing the wireless communication device's susceptibility to damage or breaks that might render the wireless communication device coupled to the wave antenna unable to properly communicate information wirelessly.

Abstract: There are disclosed methods of making RFID transponder webs and intermediate webs such as RFID strap webs and antenna webs, as well as such webs per se.

Abstract: In an antenna configuration (4) with two antenna arms (5, 6) arranged in a V-shape, two coupling zones (13, 14) for electrically coupling to respective terminals of an integrated component (15) are provided in the region of the ends (7, 8) of the antenna arms (5, 6) lying close together, wherein each of the two antenna arms (5, 6) in addition comprises a coupling region (20, 21) at a distance from its coupling zone (13, 14), and each coupling region (20, 21) is designed for electrically coupling to a terminal of a further electronic component (22).

Abstract: An RF tag includes a sensor for detecting a change in an environment near the RF tag, a storage section for storing identifier information uniquely assigned to each RF tag to identify the RF tag, and a controller for controlling the sensor and the storage section. A reader-writer includes a sensor value requesting section for requesting, with respect to the identifier information, a sensor value detected by the sensor. When the environmental information changes, the reader-writer identifies an object according to the sensor value sent from the RF tag including the identifier information as a response to the reader-writer. It is therefore possible, using an information management system, an information management method, a program, and a recording medium, to recognize an object including a particular tag.

Abstract: A wireless communication device coupled to a wave antenna that provides greater increased durability and impedance matching. The wave antenna is a conductor that is bent in alternating sections to form peaks and valleys. The wireless communication device is coupled to the wave antenna to provide wireless communication with other communication devices, such as an interrogation reader. The wireless communication device and wave antenna may be placed on objects, goods, or other articles of manufacture that are subject to forces such that the wave antenna may be stretched or compressed during the manufacture and/or use of such object, good or article of manufacture. The wave antenna, because of its bent structure, is capable of stretching and compressing more easily than other structures, reducing the wireless communication device's susceptibility to damage or breaks that might render the wireless communication device coupled to the wave antenna unable to properly communicate information wirelessly.

Abstract: An antenna, which is operable in a digital video broadcasting for handhelds (DVB-H) frequency range, includes first and second monopole radiating elements and a feeding element. The first and second monopole radiating elements are symmetrical about an axis of symmetry and have a meandering shape. The feeding element interconnects the first and second monopole radiating elements.

Abstract: A low-cost compact wideband antenna (200) has two triangular-shaped arms (500 and 510) formed by winding the conductive wire into a zigzag pattern. The two arms (500 and 510) form a compact bow-tie type antenna having equivalent electrical size larger then its mechanical dimensions. Two straight wires (530 and 540) are joined to, and electrically connected between two respective largest segment ends of two zigzag structures. The compact wideband antenna (200) is hidden inside the decorative household item (210) to provide antenna having external appearance appropriate for modern home furnishing setting with improved broadband characteristic across VHF and UHF bands but without the inconvenience of the large size.

Abstract: The invention relates in part to a folded dipole having a dipole axis and a pair of arms which together have a profile which is concave on one side and convex on the other when viewed along the dipole axis. The dipoles may be arranged as a dipole box around a central region, typically in a generally circular or square configuration. Further elements may be placed in the dipole box or in the gaps between dipole boxes. The antenna may be a single-band antenna, or a multi-band antenna with the further elements operating in a different frequency band to the dipole boxes. The further elements may be concentric dipole boxes. The invention is particularly suited for use in a cellular base station panel antenna. A novel coaxial to microstrip transition is also described.

Abstract: A dipole antenna comprising a base; first and second pairs of dipoles positioned in front of the base and arranged around a central region; a first feed line which extends from the base towards the dipoles and splits at a first junction positioned in front of the base into a first pair of feed probes each of which is coupled to a respective one of the first pair of dipoles; and a second feed line which extends from the base towards the dipoles and splits at a second junction positioned in front of the base into a second pair of feed probes each of which is coupled to a respective one of the second pair of dipoles. The feed probes are spaced from the dipoles so as to field-couple with the dipoles. In one embodiment, the first pair of feed probes is positioned on a first side of the dipoles and the second pair of feed probes is positioned on a second side of the dipoles opposite to the first side. In another embodiment, the dipoles are printed on a PCB.

Abstract: An antenna element 1 is formed such that a plurality of turning parts 13, 15, 17 are formed by being turned back in zigzag in parallel to a ground conductor film 2 while extending perpendicularly thereto and the lengths of segments 12, 14, 16, 18 between the turning parts are shorter on a side of the ground conductor film 2 (a side of a feeding part 4) and increase gradually as the segments are away from the ground conductor film 2. The turning parts of the antenna element 1 are formed such that the antenna resonates at two or more frequency bands, and has a fractional bandwidth of 4% or more of its frequency in a first frequency band and a fractional bandwidth of 15% or more of its frequency in a second frequency band by adjusting the lengths L1, L2 and L3 of respective segments and the intervals d1, d2 and d3 between adjacent segments. Consequently, a wideband antenna is realized in two or more multi-frequency bands, for example 2.4 to 2.5 GHz and 5 to 6 GHz, by using a single folded antenna.

Abstract: An integrated multi-band antenna has a first radiating conductor, a second radiating conductor spaced from the first radiating conductor, a trap element connected to the first and second radiating conductors, a third radiating conductor with a first feeding point connected to the first radiating conductor, a fourth radiating conductor connected to the second and third radiating conductors, a meandering radiating conductor having two ends which respectively connect a fifth radiating conductor with a second radiating conductor and a sixth radiating conductor parallel to the meandering radiating conductor and a ground portion arranged close to the first radiating conductor and spaced from the fifth radiating conductor. The second, third and fourth radiating conductors resonate at a first frequency bandwidth. The first, second and third radiating conductor and the trap element resonate a second frequency bandwidth.

Abstract: A low profile antenna has a meander length based on the full electrical wavelength of the signal being transmitted or received. The antenna can have either an open-loop structure or a closed-loop structure with a matching network. The low profile enables the antenna to be used in a card for a device such as a personal computer, personal digital assistant, wireless telephone and so on with minimal risk of the antenna breaking off, as compared with a prior art antenna having a higher height and thus more likelihood of being broken from its card.

Abstract: The present invention relates to a tag-use antenna allowing a miniaturization while maintaining a constant minimal change of a communication distance. The tag-use antenna has a feed part of a folded dipole antenna of a size of 53 mm long and 7 mm wide being connected to, and equipped with, an LSI chip of Rc=500 ohms and Cc=1.4 pF and is covered with plastic resin 13 of the dielectric constant ?r=3 and thickness of t=0.75 mm on both sides of the antenna. The dipole part of 1 mm wire path width of the tag-use antenna is formed in a rectangular spiral by being bent inward from both ends at bending parts at four places. The entire length of the dipole antenna when extending the four bending parts straight is featured so as to be shorter than one half of a resonance wavelength of the antenna. An inductance part is featured in the intermediate part of the both dipole parts in the neighborhood of the center of the antenna.

Abstract: A multiband antenna with removed coupling includes a radiator formed as a meander line bent zigzag several times and having a gap filling part in at least one area between neighboring meander lines. The gap filling part interconnects the neighboring meander lines. The multiband antenna further includes a ground connected with the radiator and at least one switch element mounted in an area along the longitudinal direction of the radiator and configured to alternately short or open an area of the radiator. Accordingly, two different resonance frequencies can be tuned using the single antenna, and the antenna efficiency can be enhanced by removing the coupling between the resonant frequencies that are tuned through the gap filling.

Abstract: A dipole antenna includes a plurality of parallel metal wires as its basic structure, and a plurality of identical or similar unit circuits arranged in a row in an extending direction of the plurality of metal wires and connected with each other. The unit circuits each have a tie portion that connects the metal wires with each other via at least one first inductor, and at least one first capacitor provided on at least one of the metal wires. The plurality of metal wires each have a base portion and an extended portion, and the plurality of metal wires are each bent such that the extended portion extends at an angle of 90 degrees with respect to the base portion.

Abstract: A low profile antenna has a meander length based on the full electrical wavelength of the signal being transmitted or received. The antenna can have either an open-loop structure or a closed-loop structure with a matching network. The low profile enables the antenna to be used in a card for a device such as a personal computer, personal digital assistant, wireless telephone and so on with minimal risk of the antenna breaking off, as compared with a prior art antenna having a higher height and thus more likelihood of being broken from its card.

Abstract: A wireless communication device coupled to a wave antenna that provides greater increased durability and impedance matching. The wave antenna may be in the form of a polygonal, elliptical curve and/or coil shape. The wireless communication device is coupled to the wave antenna to provide wireless communication. The wireless communication device and wave antenna may be placed on objects, goods, or other articles of manufacture that are subject to forces such that the wave antenna may be stretched or compressed during the manufacture and/or use of such object, good or article of manufacture. The wave antenna, because of its curved structure, is capable of stretching and compressing more easily than other structures, reducing the wireless communication device's susceptibility to damage or breakage that might render the wireless communication device coupled to the wave antenna unable to properly communicate information wirelessly.

Abstract: A security element for RF identification and a process for the production of such a security element. The security element has a flexible, electrically non-conducting substrate layer and a conductive layer of an electrically conducting material which is applied to the substrate layer and which in a first surface region of the substrate layer is shaped out in pattern form to form an RF component. A first relief structure is shaped at least in region-wise manner in the surface region, associated with the RF component, in the first conductive layer.