Abstract: A tripolar antenna is described having at least two electromagnetic signal transmitting/receiving elements arranged such that their axes of signal transmission/reception sensitivity are not parallel, wherein said elements are provided on or at least partially in a substrate of dielectric material so portions of said at least two elements are coplanar and dielectrically isolated from one another. In a preferred arrangement, two dipoles are provided on the substrate in perpendicular orientation and in the plane containing of the surface of said dielectric material. Most preferably a further third element is provided so as to render the antenna tripolar, said third element comprising a first circular disk element secured to an upper surface of the dielectric material, and a second slightly larger circular disk element, concentrically positioned on the corresponding opposite and lower surface of the dielectric.

Abstract: Dual-band antenna including a shorted loop slot antenna and a spiral antenna.

Abstract: The invention relates to a handheld device comprising a first antenna (401, 701, 901, 931, 961, 1101, 1151, 1301, 1501) arranged to operate in at least a first frequency band, and a second antenna (402, 702, 902, 1102, 1302, 1502, 2210) arranged to operate in at least a second frequency band, wherein said second frequency band is different from said first frequency band. According to the invention, the second antenna comprises a slot antenna comprising at least one slot in at least one conductive layer. The invention also relates to enhancement of the isolation between first and second antennas in a handheld device.

Abstract: A portable electronic device is provided that has a hybrid antenna. The hybrid antenna may include a slot antenna structure and an inverted-F antenna structure. The slot antenna portion of the hybrid antenna may be used to provide antenna coverage in a first communications band and the inverted-F antenna portion of the hybrid antenna may be used to provide antenna coverage in a second communications band. The second communications band need not be harmonically related to the first communications band. The electronic device may be formed from two portions. One portion may contain conductive structures that define the shape of the antenna slot. One or more dielectric-filled gaps in the slot may be bridged using conductive structures on another portion of the electronic device. A conductive trim member may be inserted into an antenna slot to trim the resonant frequency of the slot antenna portion of the hybrid antenna.

Abstract: A helical element, which is operated in the frequency band of FM broadcast, is wound around the outer periphery of a rod-shaped support member 10. A line-shaped element 12, which is operated in the frequency band of terrestrial digital television broadcast, is disposed in a first groove 10a of a predetermined length formed on the outer periphery of the support member 10 from the lower end thereof. With this arrangement, a multi-frequency antenna 1, which is operated in the frequency band of FM broadcast and the frequency band of terrestrial digital television broadcast, can be arranged, and the entire length L of the helical element can be reduced and it can be operated in a plurality of frequency bands with the effect of the line-shaped element 12.

Abstract: An antenna providing a plurality of radiation patterns by adjusting a vertical beamwidth and a construction method for the antenna are provided. The antenna may include an integrated circuit (IC) element unit to provide a plurality of radiation patterns, and a switching unit to selectively provide any one of the plurality of radiation patterns based on control data.

Abstract: A low-profile antenna assembly includes at least two antennas co-located under a cover. At least one of the at least two antennas includes an antenna configured for use with AM/FM radio. And, at least one of the at least two antennas includes an antenna configured for use with at least one or more of SDARS, GPS, cell phones, Wi-Fi, DAB-VHF-III, DAB-L, etc.

Abstract: An apparatus and method are provided for producing a wide E-plane half power beamwidth. The apparatus can include a dipole antenna and a complimentary slot antenna in an infinite ground plane. The apparatus can also include a waveguide with surrounding structure that can be adjusted to produce the desired half power beamwidth.

Abstract: Free space antenna structures are presented in which multiple radiating elements are disposed proximate to each other. In a structure containing two radiating elements, the radiating element of shorter wavelength is split into a monopole and a dipole that are electrically, but not physically, coupled to each other. The monopole has a length of ?/4 and is attached to the same feed as the longer wavelength radiating element. The dipole has a length of ?/4 and is attached to the same feed as the longer wavelength radiating element. Non-conductive shields prevent contact between the monopole, dipole, and longer wavelength radiating element. The longer wavelength radiating element is formed in a helix outside of which the dipole, and perhaps monopole, is disposed.

Abstract: A fin-type planar antenna and a deployable dipole antenna are combined into a system as a diversity fin antenna to reduce or eliminate cross polarization fades and dropouts common to wireless audio systems used in theatres, churches and convention centers. A dual feedline connects the diversity fin antenna system to a diversity-equipped receiver in a convenient and rapid manner. The antenna system features broad bandwidth, resistance to deep nulls or fades caused by cross polarization, and an air space dielectric covering provides resistance to detuning in the presence of rain, or touching objects.

Abstract: Wireless portable electronic devices such as laptop computers are provided with antennas. An antenna may be provided within a clutch barrel in a laptop computer. The clutch barrel may have a dielectric cover. Antenna elements may be mounted within the clutch barrel cover on an antenna support structure. There may be two or more antenna elements mounted to the antenna support structure. These antenna elements may be of different types. A first antenna element for the clutch barrel antenna may be formed from a dual band antenna element having a closed slot and an open slot. A second antenna element for the clutch barrel antenna may be formed from a dual band antenna element of a hybrid type having a planar resonating element arm and a slot resonating element. Flex circuit structures may be used in implanting the first and second antenna elements for the clutch barrel antenna.

Abstract: A device having an electric antenna and a magnetic antenna is described, the antennas being spatially arranged in immediate mutual proximity. The electric antenna has at least one current-carrying electric conductor which acts as a resonator for the electric antenna, while the magnetic antenna has a coil with at least one current-carrying conductor loop which acts as an inductor of the magnetic antenna. Thus the electric antenna and the magnetic antenna are spatially arranged relative to each other such that the direction of the current in the electric conductor of the electric antenna extends substantially at right angles to the direction of the current in the conductor loop of the magnetic antenna.

Abstract: The invention relates to a polarization diversity multi-antenna system comprising a first slot type antenna (20) and at least one second patch type antenna (30), said first and second antennas sharing the same ground plane (10), the slot of the first antenna being laid out in said ground plane and the patch of the second antenna being at least partly plumb with said slot.

Abstract: A dual-band antenna is provided that combines two normally disparate communications modes into a single compact aperture minimizing overall mass and volume, while maintaining high performance efficiency and reciprocity of each individual mode. The antenna is compatible with both optical (near-IR/visible) and RF (microwave/millimeter-wave) transceiver subsystems for high bandwidth communications, applicable primarily to long- to extremely long-range (space-to-ground) link distances. The optical link provides high bandwidth while the RF provides a lower data-rate weather backup, accommodation for traditional navigation techniques, and assistance in cueing the extremely tight optical beam by matching the RF beamwidth to an optical fine-steering mechanism field-of-regard. The configuration is built around a near-diffraction-limited high performance primary mirror shared by both a direct-fed RF antenna design and a Cassegrain optical telescope.

Abstract: A triple-band antenna for transmitting and receiving low-frequency band signals and high-frequency band signals. The triple-band antenna includes a printed antenna having two wings for transmitting and receiving low-frequency signals; and an antenna array including a plurality of radiating elements being printed on one of the wings of the printed antenna, wherein the antenna array transmits and receives the high-frequency band signals, wherein one of the wings of the printed dipole is a ground for the antenna array.

Abstract: A diversity antenna for use with a portable host device such as a laptop computer, for example as part of a PCMCIA card pluggable into the laptop computer to enable wireless computer by the laptop computer, includes a main antenna and a diversity antenna. Various configurations for these antennas are possible, including the use of a balanced dipole as the main antenna element and a split diversity antenna for the diversity antenna element. The diversity antenna provides high isolation between the antenna elements and isolation from interfering self-noise generated by the host device.

Abstract: A distributed multiband antenna intended for radio devices, and methods for designing manufacturing the same. In one embodiment, a planar inverted-F antenna (PIFA) configured to operate in a high-frequency band, and a matched monopole configured to operate in a low-frequency band, are used within a handheld mobile device (e.g., cellular telephone). The two antennas are placed on substantially opposing regions of the portable device. The use of a separate low-frequency antenna element facilitates frequency-specific antenna matching, and therefore improves the overall performance of the multiband antenna. The use of high-band PIFA reduces antenna volume, and enables a smaller device housing structure while also reducing signal losses in the high frequency band. These attributes also advantageously facilitate compliance with specific absorption rate (SAR) tests; e.g., in the immediate proximity of hand and head “phantoms” as mandated under CTIA regulations.

Abstract: An antenna configuration is described for high frequency (HF) or very high frequency (VHF) radars contained in a single vertical post. The radar may include a vertical dipole or monopole transmitting antenna collocated with a three-element receive antenna. The three antennas including two crossed loops and a vertical element are used in a direction-finding (DF) mode. Isolation between the three antennas produces high quality patterns useful for determining target bearings in DF mode. The single vertical post is sufficiently rigid mechanically that it may be installed along a coast without guy wires.

Abstract: A high isolation multi-band antenna includes a housing, at least one WiMAX antenna array installed inside the housing, at least one Wi-Fi antenna installed inside the housing, and a printed circuit board installed inside the housing for processing signals accessed through the at least one WiMAX antenna and the at least one Wi-Fi antenna. The at least one Wi-Fi antenna is substantially orthogonal to the at least one WiMAX antenna.

Abstract: A multi-band antenna apparatus of a portable terminal increases multi-band support and space utility by installing a broadcasting antenna in an installation space of a mobile communication antenna. The multi-band antenna apparatus includes a carrier engaging with a main circuit board of the portable terminal. A first antenna emitter is provided at one side of the carrier. A whip antenna including an outer sleeve is provided inside the carrier. A second antenna emitter electrically connected to an extension line is integrally extended from a first antenna emitter and an outer sleeve of a whip antenna. A first power supply line electrically connecting a first power supply pad is provided at the main circuit board to the first antenna emitter. And a second power supply line electrically connecting the outer sleeve of the whip antenna to a second power supply pad is provided at the main circuit board.

Abstract: An antenna made up of small addressable conductive segments, or pixel elements, located in a dielectric space positioned over a two-dimensional pixel element actuator is presented. The small pixel elements can be actuated in less than a millisecond by the actuator to form patterns that create an array of patch antennas and associated transmission lines on the upper surface of the dielectric space. The pixel elements can be formed using small movable conductive particles such as metal flakes or metal chips.

Abstract: A Ka/Ku-band transmitter-receiver comprises a tri-band feed of a Ka-band transceiver, in conjunction with an array of phase combined patch receiving, antennas that operate at the Ku-band frequencies.

Abstract: An antenna provides two antenna elements, which are connected to one another. The second antenna element can be connected to a radio device. The first antenna element and the second antenna element together form a first antenna part. The second antenna element alone forms a second antenna part. The first antenna element comprises at least in part at least one flexible metal strip. The second antenna element comprises at least in part a flexible corrugated tube.

Abstract: A multi-band antenna comprising a conductive structure and a plurality of current probes coupled around the conductive structure. Each current probe is designed to receive and transmit in a substantially different frequency band than the other current probes. The current probes are positioned on the conductive structure so as to effectively create a plurality of transmit/receive antennas such that each respective antenna has a voltage standing wave ratio (VSWR) of less than or equal to approximately 3:1 for a given range within each respective frequency band.

Abstract: There is provided a composite antenna device for responding to waves in a plurality of radio frequency bands, including: a sheet of conductor plate; a first antenna provided on the sheet of conductor plate for responding to a linearly-polarized wave in at least one radio frequency band; and a second antenna provided on the sheet of conductor plate for responding to a circularly-polarized wave in a radio frequency band that is different from the at least one radio frequency band, wherein the first antenna has a ground portion, the second antenna is formed in an area in the ground portion, and each of the first antenna and the second antenna has a feeding point.

Abstract: A dual-feed and dual-band antenna includes a substrate, a grounding unit disposed on the substrate and having two opposite sides, a first radiating unit disposed on the substrate near the first side of the grounding unit, and a second radiating unit disposed on the substrate near the second side. The second radiating unit has a short-circuit strip electrically connected to the grounding unit. The antenna further includes a first coaxial cable electrically connected to the first radiating unit and the grounding unit, and a second coaxial cable electrically connected to the second radiating unit and the grounding unit.

Abstract: An antenna device includes a ground plate, a dielectric body disposed at an end of the ground plate, an L-shaped foldable antenna disposed at one side of the dielectric body, a wide-band monopole antenna disposed at an opposite side of the dielectric body, and a power supply disposed between the L-shaped foldable antenna and the wide-band monopole antenna.

Abstract: The present disclosure relates to compact, dual-mode ultra high frequency (UHF) radio frequency identification (RFID) reader antenna systems and methods capable of supporting both long range and short range applications. The present invention includes a dual-mode antenna design, a dual-mode RFID reader utilizing the dual-mode antenna design, and an associated usage method. The dual-mode antenna design may include a patch operating mode for long range applications and a slot operating mode for short range applications. Additionally, the dual-mode antenna design may include mechanisms to improve the patch operating mode bandwidth, circular polarization in the patch operating mode, and dual polarization in the slot operation mode.

Abstract: An apparatus, method of propagating a signal and method of manufacture for an antenna structure comprising a section which is positioned or formed in relation to a portion of the antenna structure, such that a portion of the electromagnetic (EM) field that is emitted from the antenna structure is partially slowed or phase shifted thereby resulting in an improvement of the horizontal gain of the EM field.

Abstract: A mobile wireless communications device includes a housing and circuit board carried by the housing. Radio Frequency (RF) circuitry is mounted on the circuit board. A first antenna is supported by the circuit board within the housing and operatively connected to the RF circuitry and configured for cellular phone communications. A second antenna is supported by the circuit board within the housing and operatively connected to the RF circuitry and configured for WiFi communications. The second antenna comprises an inverted-F or monopole antenna having an opening gap that is pointed away from the first antenna.

Abstract: To provide a dual polarized antenna capable of reducing correlation between antenna elements. A dual polarized antenna is constituted by a vertically polarized antenna and a horizontally polarized antenna formed on a printed circuit board and radiates two kinds of polarized waves.

Abstract: There is disclosed an antenna for reception of circularly polarized satellite radio signals. The antenna comprises at least one two-dimensional or three-dimensional antenna conductor structure connected with an antenna output connector. The multi-dimensional antenna conductor structure is configured so that it comprises a plurality of antenna conductor sections, which, with reference to a spatial reference point (z) common to the antenna conductor sections, are disposed in pairs, symmetrically and extending in the same direction.

Abstract: Aspects of a method and system for matching an integrated FM system to an antenna utilizing on-chip measurement of reflected signals are provided. In this regard a portion of a signal output by an integrated FM radio transmit block and reflected by an antenna may be routed to an on-chip signal analyzer. Accordingly, measurements of the reflected signals may be utilized to configure a matching network in order to provide a best impedance match between the FM radio and the antenna. In this regard, a best impedance match may maximize radiation efficiency and/or radiated power. Additionally, the configuration of the matching network may incorporate a correction algorithm/offset experimentally determined via a calibration utilizing external components.

Abstract: Methods and systems for auto detecting and auto switching antennas in a multi-antenna FM transmit/receive system are disclosed and may include detecting when an external antenna may be coupled to an external port of the wireless device and utilizing the external antenna for transmitting and/or receiving FM signals. The decoupling of an external antenna from an external port may be detected, which may cause the FM radio transmitter/receiver to be configured to transmit and/or receive FM signals utilizing antennas internal to the wireless device. One or more test signals, which may include AC signals, may be generated within the chip for detecting whether an external antenna may be coupled to an external port. A reflected signal from an external port may be measured and compared to a prestored value corresponding to a reflection due to an open circuit at the one or more external ports of the wireless device.

Abstract: A multi-band antenna apparatus is provided. The multi-band antenna apparatus comprises a circuit board, a planar printed antenna with a feed-in point and a telescopic antenna. The planar printed antenna is printed on the circuit board. The telescopic antenna is coupled to the circuit board through the feed-in point. The planar printed antenna receives a first radio frequency signal, and then transmits the first radio frequency signal to the circuit board through the feed-in point. The telescopic antenna receives a second radio frequency signal and then transmits the second radio frequency to the circuit board.

Abstract: A composite antenna device whose size is reduced while reception performance of a patch antenna is maintained is provided. The composite antenna device includes a rod antenna 30 for receiving AM/FM radio broadcasting and a patch antenna 40 for a radio wave of satellite broadcasting that is transmitted from a satellite and is higher than the AM/FM broadcasting, the patch antenna 40 is arranged side by side at a position with a distance from the rod antenna 30 shorter than a wavelength of the radio wave of the satellite broadcasting, and a feeding point P2 that supplies power to the patch antenna 40 is provided at a position displaced from a front end 41B of the patch antenna 40 only by a length according to a distance L between the antennas.

Abstract: The present disclosure is directed to enclosed antenna systems for receiving multiple different broadcast types. In one aspect of the disclosure, the enclosed antenna system comprises an enclosure including a satellite television antenna assembly, an off-air television antenna assembly and control electronics disposed on a motorized turntable. In another aspect, the off-air television antenna assembly comprises both UHF and VHF antenna assemblies. In a further aspect, the UHF and VHF television signals received by the off-air antenna assembly are combined, amplified and diplexed with the television signal received by the satellite television antenna assembly. A method of watching television broadcasts from satellite and off-air sources using a multi-antenna system contained within a single enclosure is also disclosed.

Abstract: Embodiments of wireless antenna array systems to achieve three-dimensional beam coverage are described herein. Other embodiments may be described and claimed.

Abstract: An antenna assembly for multiple band operation of a wireless communications devices such as cellphones. Embodiments of the present invention provides for operation over 824-960 MHz Cellphone and 1575 MHz GPS bands and 1710-2155 MHz. Coverage over the GPS frequency band is highly desirable for wireless communication devices such as cell phones, in order to provide location information. Radiating conducting elements can be positioned in close proximity to an inverted PIFA-type antenna, requiring very little additional space or volume and allowing nearly the same form factor to be used for the antenna assembly. An illuminated panel may be positioned within an aperture of the ground plane. The panel may be back lit and activated in response to an external signal.

Abstract: The present invention provides an antenna apparatus for a wireless unit, the antenna apparatus exhibiting a reduced specific absorption rate (SAR) without an additional component for reducing the SAR, which is the amount of energy of an electromagnetic wave absorbed by a human body.

Abstract: The antenna circuit 42 includes: an MI magnetic sensor having an electric property which changes in accordance with a magnetic field change; a radio-frequency signal generator S1 to apply a radio-frequency signal to the MI magnetic sensor Z1; an inverter 92 to invert the radio-frequency signal; an adder 94 to reduce the radio-frequency signal by adding the inverted signal with a received signal obtained by the MI magnetic sensor Z1; and detectors D1 and D2 to detect the received signal in which the radio-frequency signal has been reduced. Further, included are a resonant circuit 620 including a magnetic sensor circuit Z1 and a resonant element such as quartz to retrieve a magnetic field change of a resonant frequency from a detected magnetic field change; and a resistance R0. Further, the magnetic sensor circuit 610 includes a magnetoresistance element 612, a DC power source 611 and a resistance R1.

Abstract: An antenna system for a reader configured to interact with RFID tags includes one or more antenna elements electrically coupled to the reader for transmission and reception of RFID signals. In one embodiment the antenna elements include a conductive plate, a first elongate aperture in the plate oriented longitudinally in a first direction, a second elongate aperture in the plate oriented longitudinally in the first direction so as to be generally parallel with the first elongate aperture, a third elongate aperture in the plate oriented longitudinally in a second direction generally perpendicular to the first direction and configured to join the first and second apertures at about the longitudinal middle of the first aperture. Both “h”-shaped and “H”-shaped versions are provided. In another embodiment the antenna element comprises a rectangular slot.

Abstract: Embodiments of wireless antenna array systems to achieve three-dimensional beam coverage are described herein. Other embodiments may be described and claimed.

Abstract: An antenna assembly that has particular application for a hand held reader that interrogates sensors embedded within a vehicle tire, such as RFID sensors and tire pressure sensors. In one embodiment, the antenna assembly includes a first antenna operating in the 432-435 MHz range that employs a meander-line slot that provides increased antenna cross-polarization so that the sensor can be interrogated regardless of the antenna orientation and polarization. The antenna assembly also includes two RFID antennas that operate in the 902-928 MHz range that are planar antenna that make the antenna bi-directional, polarization free and a wide enough bandwidth for the RFID interrogation.

Abstract: The present invention relates to an antenna comprising: at least one central longitudinal radiating element; and at least one outer element comprising at least one rolled-up electrically-conductive sheet disposed around the central element, without electrical contact therebetween, the outer element presenting a height that is strictly decreasing, or alternatively that increases and decreases along the roll.

Abstract: An antenna apparatus that can suppress sensitivity degradation as much as possible to receive AM broadcasts and FM broadcasts even if an antenna height is decreased to 70 mm or less. An antenna board is vertically mounted on a planar antenna base, and a top portion is disposed to stride over the antenna board. An antenna element includes the top portion and an antenna pattern formed on the antenna board. A distance between the antenna base and a lower edge of the top portion is not less than 10 mm, and the lower edge of the top portion is bent downward. The top portion is configured such that an antenna capacitance of the antenna element becomes about 3 pF or more. A received signal from the antenna element is guided to an amplifier board through a connecting wire and amplified. An antenna case is fitted in the antenna base.

Abstract: An antenna apparatus includes a housing defining a plurality of walls and a plurality of included angle spaces between the walls. An inner surface of one of the walls is configured a telecommunication antenna. One of the included angle spaces opposite to the wall on which the telecommunication antenna is configured a global positioning system antenna. A broadcast receiving antenna positions in the housing and between the telecommunication antenna and the global positioning system antenna. Because the telecommunication antenna and the global positioning system antenna position away from each other, the interference therebetween will be reduced.

Abstract: Provided are an antenna apparatus for linearly polarized diversity antennas in a radio frequency identification (RFID) reader, and a method of controlling the antenna apparatus. The antenna apparatus includes: a plurality of linearly polarized diversity antennas disposed to have different directions to one another; a switching unit connecting the linearly polarized diversity antennas to the RFID reader; and a controller controlling the switching unit to selectively activate the linearly polarized diversity antennas.

Abstract: The present invention relates to a compact multiband antenna constituted by a first dipole type element comprising a first conductive arm connected to a second conductive arm having the shape of a box, mounted on a ground plane, the first and the second arms being supplied differentially and a second element of the slot type realized on said ground plane in the extension of said second arm.

Abstract: An antenna 1 which is incorporated in a multilayer wiring board 2 has: radiating elements 11-1, 11-2, 11-3, and 11-4 which are laid on faces of A-, B-, and C-layers of the wiring board 2, respectively; power supplying portions 12-1, 12-2, 12-3, and 12-4 which are laid on the faces of the layers, respectively to supply an electric power to the radiating elements 11-1, 11-2, 11-3, and 11-4; short-circuiting portions 13-1, 13-2, 13-3, and 13-4 which are laid on the faces of the layers, respectively to ground the radiating elements 11-1, 11-2, 11-3, and 11-4; and a connecting portion 14 which penetrates the A-, B-, and C-layers of the wiring board 2, and through which the power supplying portions 12-1, 12-2, 12-3, and 12-4 are electrically connected to each other.