Switching Between Antennas And Lines Patents (Class 343/876)
  • Patent number: 7853222
    Abstract: The invention relates to a switch with selective isolation and also to a switching device with selective isolation for multimedia terminals. The switch formed by 2 transistors (T1, T2) is feedback controlled by a feedback control signal V tune at a pre-defined frequency thus guaranteeing the selective isolation at this frequency. The switching device for switching the transmission/receiver channels of a multimedia terminal is formed by selective isolation switches that can be integrated using MMIC technology.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: December 14, 2010
    Assignee: Thomson Licensing
    Inventors: Jean-Luc Robert, Philippe Minard, Jean-Yves Le Naour
  • Patent number: 7847740
    Abstract: An antenna system comprises a receive diversity antenna system and a configurable antenna arrangement. Incoming signals are received through the receive diversity antenna system and outgoing signals are transmitted through the configurable antenna arrangement. A controller generates control signals to adjust the configurable antenna arrangement to change the transmission performance characteristics of the configurable antenna arrangement. The configurable antenna arrangement may be a smart antenna, a plurality of antennas, or a configurable antenna where transmission characteristics change in response to control signals.
    Type: Grant
    Filed: February 13, 2006
    Date of Patent: December 7, 2010
    Assignee: Kyocera Corporation
    Inventors: Doug Dunn, Gregory Poilasne, Henry Chang, Huan-Sheng Hwang, Ramon Khalona
  • Publication number: 20100302126
    Abstract: A circuit board for wireless communications includes communication circuitry for modulating and/or demodulating a radio frequency (RF) signal and an antenna apparatus for transmitting and receiving the RF signal, the antenna apparatus having selectable antenna elements located near one or more peripheries of the circuit board. A first antenna element produces a first directional radiation pattern; a second antenna element produces a second directional radiation pattern offset from the first radiation pattern. The antenna elements may include one or more reflectors configured to provide gain and broaden the frequency response of the antenna element. A switching network couples one or more of the selectable elements to the communication circuitry and provides impedance matching regardless of which or how many of the antenna elements are selected.
    Type: Application
    Filed: August 5, 2010
    Publication date: December 2, 2010
    Inventors: Victor Shtrom, Darin T. Milton, William S. Kish
  • Patent number: 7844231
    Abstract: An apparatus and method in a Time Division Duplex (TDD) wireless communication system are provided. The apparatus includes two 90° hybrid couplers and a phase converter block. The two 90° hybrid couplers each separate a signal into two signals and output the two signals, and each couple two signals and output the coupled signal. The phase converter block connects between the two 90° hybrid couplers. In a transmission mode, the phase converter block identically varies phases of two signals and outputs the varied two signals to the second 90° hybrid coupler. In a reception mode, the phase converter block varies phases of two signals and outputs the varied two signals to the first 90° hybrid coupler.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: November 30, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hyun-Su Yoon
  • Publication number: 20100289717
    Abstract: A micro electromechanical (MEMS) antenna (36) is positioned on one side of a substrate and is connected to a MEMS switch comprising a capacitor bridge (46) and to a transmission line (42) by means of a thru hole or via (48) which forms an electrically conducting path through the substrate. This arrangement provides a common ground plane for the antenna and switch and shields the switch from the electromagnetic radiation received or transmitted from the antenna. The switch may comprise a topmost metal layer which extends across a bridge structure formed by a polymer layer (19). The polymer layer comprises poly-monochloro-para-xylene (parylene-C). Homogeneous or heterogeneous antenna array structures are implemented. The antenna arrays may include one or more different type of antennas with for example different shapes, rotations and reflections.
    Type: Application
    Filed: June 13, 2008
    Publication date: November 18, 2010
    Applicant: THE UNIVERSITY COURT OF THE UNIVERSITY OF EDINBURGH
    Inventors: Tughrul Arslan, Anthony John Walton, Nakul R. Haridas, Ahmed Osman El-Rayis
  • Patent number: 7830330
    Abstract: Regarding an antenna configuration (1) preferably provided for a telecommunication device and comprising a first resonator structure (6) and second resonator structure (RS) being capacitive coupled with the first resonator structure (6) it is suggested to provide the antenna configuration (1) with a control electrode (2) and a switching stage (3), said control electrode (2) by means of the switching stage (3) being switchably connected to ground (G) and said switching stage (3) enabling to change capacitive coupling of the two resonator structures (6, RS) and thus to change the resonance frequency of the antenna configuration (1) and making possible to switch between a first frequency range and a second frequency range for enhancing the bandwidth and achieving improved matching of the antenna configuration (1).
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: November 9, 2010
    Assignee: NXP B.V.
    Inventor: Heiko Pelzer
  • Publication number: 20100279734
    Abstract: There is an antenna, three feed ports, two switches, and two impedances. In an embodiment, the first and second feed ports interface respective FM transmitter and FM receiver, and the third feed port interfaces Bluetooth, WLAN and/or GPS radios. The two switches are disposed along the antenna. A first throw of them renders a balanced mode for the antenna seen by the first feed port and a second throw renders an unbalanced mode for the antenna seen by the second feed port. The two impedances are disposed and configured such that the antenna, for signals in a second frequency band at the third feed port and which are impeded by the two impedances, is an unbalanced mode for the first throw of the switches and is an unbalanced mode for the second throw of the switches. Also detailed is a method for making an electronic device having such an antenna.
    Type: Application
    Filed: April 30, 2010
    Publication date: November 4, 2010
    Inventors: Jouni Karkinen, Hannu Laurila, Jouni Hanninen
  • Publication number: 20100277394
    Abstract: It is described an antenna arrangement for transmitting and/or for receiving electromagnetic radiation. The antenna arrangement includes two antenna elements, which are adapted for transmitting and/or for receiving electromagnetic radiation of a first polarization. The antenna arrangement further includes one antenna element, which is adapted for transmitting and/or for receiving electromagnetic radiation of a second polarization being different from the first polarization. Furthermore, there is provided one coupling unit, which is adapted to couple, based on an appropriate control signal, the antenna elements selectively with one terminal of the antenna arrangement in such a manner, that the polarization direction of the antenna arrangement can be adjusted to the first polarization or to a combination of the first and the second polarization.
    Type: Application
    Filed: August 27, 2008
    Publication date: November 4, 2010
    Inventors: Thomas Haustein, Egon Schulz, Wolfgang Zirwas
  • Publication number: 20100277395
    Abstract: An antenna device and a communication device capable of changing over polarization characteristics of an antenna to improve transmission capacity in various kinds of polarization environments and used configuration by preventing reduction of the communication capacity for a reception signal degrading or varying depending on momentarily changing polarization conditions between a base station and a terminal. The antenna device (110) includes a plurality of first antenna elements (111,112) for a first polarizing direction, a second antenna element (121) provided in the direction orthogonal to the first polarizing direction, a plurality of switches (131,132) for switching connection between the plurality of first antenna elements (111,112) and the second antenna element (121), and power supply parts (141,142) respectively provided on the plurality of first antenna elements (111,112).
    Type: Application
    Filed: December 4, 2007
    Publication date: November 4, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Hiroshi Satoh, Yoshio Koyanagi
  • Publication number: 20100271269
    Abstract: An antenna comprises a metal pen, a first contact terminal and a first switch. The metal pen is configured for receiving a wireless signal. The first contact terminal is configured for transmitting the wireless signal. The first switch is coupled to the first contact terminal and configured for outputting the wireless signal to a first processing unit or a second processing unit according to a control signal. A mode of the first processing unit processing the wireless signal is different from that of the second processing unit.
    Type: Application
    Filed: April 27, 2009
    Publication date: October 28, 2010
    Inventor: Shih-Ming CHUANG
  • Patent number: 7821464
    Abstract: The present invention relates generally to computer devices utilizing removable radio frequency communication devices used for transmitting and receiving information and more particularly to an improved apparatus for connecting an appropriate antenna to the radio frequency communication device using an antenna cap, and to an improved method and apparatus for connecting a communication card device such as a radio or modem to an appropriate antenna or telephone line.
    Type: Grant
    Filed: October 21, 2008
    Date of Patent: October 26, 2010
    Assignee: Broadcom Corporation
    Inventors: Patrick W. Kinney, Ronald L. Mahany, Guy J. West
  • Patent number: 7812783
    Abstract: A system for providing multiple antenna patterns comprises a first antenna element, a second antenna element, wherein the first and second antenna elements are coplanar and arranged orthogonally with respect to each other in the plane, and a feed circuit in communication with a signal feed line alternately connecting the signal feed line to each of the first and second antenna elements.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: October 12, 2010
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventors: Chi Lun Mak, Corbett R. Rowell
  • Patent number: 7808445
    Abstract: The present invention relates to a portable radio communication device operable in at least a first and a second frequency band, the antenna device comprises a first electrically conductive radiating element comprises a first feeding portion connectable to a feed device (RF) of the radio communication device for feeding and receiving radio frequency signals, a ground plane provided at a distance from the first radiating element, a DC-blocking device connecting the first electrically conductive radiating element and the ground plane at a first position, and a controllable switch connecting the first electrically conductive radiating element and the ground plane at a second position.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: October 5, 2010
    Assignee: Laird Technologies AB
    Inventor: Axel von Arbin
  • Patent number: 7808431
    Abstract: The antenna apparatus includes first to fourth antenna elements successively arranged at regular angular intervals around the central point on the same plane and respectively having first to fourth feed points, and a phase shifter delaying the phase of the received electric wave approximately by 90 degrees. The unidirectivity of the antenna apparatus is controlled in four directions of 0 degree, 90 degrees, 180 degrees and 270 degrees by selectively connecting the first to fourth feed points, the phase shifter and a television receiver. Therefore, multipath interference in these directions can be suppressed.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: October 5, 2010
    Assignee: DX Antenna Company, Limited
    Inventors: Eiji Shibuya, Toshio Fujita
  • Publication number: 20100245205
    Abstract: A wideband antenna, for use in portable computers incorporating at least one wireless communication device, with improved radiated antenna efficiency across a broad range of operating frequency bands with minimal additional physical size or cost, is described. In an exemplary embodiment, the wideband antenna is defined by at least a first and second housing, where a first metal structure in at least a first one of the at least a first and second housings is commonly connected to at least two antenna RF feed ports at a boundary of the at least a first and second housing. In a further exemplary embodiment, the device is a portable computer, and the first housing is an upper display housing, the second housing includes a wireless communication device with at least two RF signal paths to at least two antenna RF feed ports, and the second housing further includes a second metal structure commonly connected to at least two antenna RF feed ports of the wideband antenna.
    Type: Application
    Filed: March 27, 2009
    Publication date: September 30, 2010
    Applicant: QUALCOMM INCORPORATED
    Inventor: Allen Minh-Triet Tran
  • Publication number: 20100245207
    Abstract: The present invention relates to a multi-sector radiating device intended to receive and/or transmit electromagnetic signals, comprising at least, arranged on a plane substrate: a first set of antennas, with: a first antenna, a second antenna, a third antenna, arranged in the opposite manner to the first antenna, a fourth antenna, arranged in the opposite manner to the second antenna, the antennas being longitudinal radiation slot type antennas, said antennas each presenting a bisector, wherein the radiating device comprises a switching circuit capable of activating one or more of the antennas, and notably all the antennas of the first set of antennas, —and in that the bisectors of the opposed antennas on the substrate are not combined.
    Type: Application
    Filed: November 19, 2008
    Publication date: September 30, 2010
    Inventors: Jean-Luc Robert, Philippe Minard, Ali Louzir
  • Patent number: 7804455
    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.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: September 28, 2010
    Assignees: Electronics and Telecommunications Reseach Institute, Chungbuk National University Industry-Academic Cooperation Foundation
    Inventors: Jong Moon Lee, Nae-Soo Kim, Cheol Sig Pyo, Ik Guen Choi
  • Publication number: 20100238075
    Abstract: The invention provides an antenna system for wireless communications and in particular to a multiple antenna system for operation in conjunction with a radio frequency (RF) front end for wireless communication. The antenna system comprises one or more antennas configurable for transmission and reception in a first set of configurations and configured for transmission in a second set of configurations. The antenna system further comprises two or more antennas configurable for MIMO-diversity reception for the second set of configurations. The antennas that are configured for MIMO-diversity reception may be tuneable, and may have similar characteristics to enhance MIMO reception. Mobile communications terminals utilizing the antenna system, and radio-frequency (RF) front ends for operation in conjunction with the antenna system are also provided. The antenna system may support communications in multiple frequency bands and/or multiple communication standards of operation.
    Type: Application
    Filed: March 4, 2010
    Publication date: September 23, 2010
    Applicant: Sierra Wireless, Inc.
    Inventor: Behrouz Pourseyed
  • Patent number: 7800553
    Abstract: In an information processing apparatus such as a notebook type personal computer having radio communication functions, for communication units to simultaneously carry out transmission/reception independently of each other without increasing the number of antennas, and for sufficiently utilizing a diversity function in the case of only a portion of the communication units, there are provided antennas, communication units capable of carrying out radio communications through the use of the antennas, respectively, and a switching unit for switching connection states between the antennas and the communication units.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: September 21, 2010
    Assignee: Fujitsu Limited
    Inventor: Yosuke Konaka
  • Patent number: 7800552
    Abstract: At least two antennas are selected from a plurality of antennas which consist of at least two antennas having polarization characteristics or directivities different from one another, and which are arranged such that spatial fading correlations between the antennas are low, and a multiple input multiple output communication is conducted by using the selected antennas.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: September 21, 2010
    Assignee: Fujitsu Limited
    Inventors: Yuuta Nakaya, Ichirou Ida, Atsushi Honda
  • Patent number: 7800544
    Abstract: A multi-band antenna device for a portable radio communication device has first and second radiating elements (10, 20?). A controllable switch (30) is arranged between the radiating elements for selectively interconnecting and disconnecting thereof. The state of the switch is controlled by means of a control voltage input (VSwitch). A filter (40) comprising a pure resistance that blocks radio frequency signals is arranged between the second radiating element and the control voltage input. By means of this arrangement, two broad and spaced apart frequency bands are obtained with retained performance and small overall size of the antenna device. A communication device comprising such an antenna device is also provided.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: September 21, 2010
    Assignee: Laird Technologies AB
    Inventor: Anders Thornell-Pers
  • Publication number: 20100231325
    Abstract: A switchable 0°/180° phase shifter on a balanced transmission line is provided. In one embodiment, the invention relates to an apparatus for providing 0°/180° phase shifting for a transmit/receive antenna pair including a transmit element and a receive element coupled by a balanced transmission line having two sections, the apparatus including a first section of the balanced transmission line, the first section including a first conductor and a second conductor, a second section of the balanced transmission line, the second section including a third conductor and a fourth conductor, and a switch disposed between the first section and the second section, wherein in a first configuration, the switch couples the first conductor to the third conductor and the second conductor to the fourth conductor, and in a second configuration, the switch couples the first conductor to the fourth conductor and the second conductor to the third conductor.
    Type: Application
    Filed: March 16, 2009
    Publication date: September 16, 2010
    Inventors: Mark Hauhe, Clifton Quan
  • Patent number: 7787832
    Abstract: An apparatus including a TX/RX antenna switch (TRAS) in a time division duplex (TDD) wireless communication system is provided. In particular, an apparatus for protecting an RX low-noise amplifier (LNA) from a radio-frequency (RF) TX signal using a 180° hybrid coupler is provided. The TRAS apparatus includes a 180° hybrid coupler, a phase shifter and a combiner/divider unit.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: August 31, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hyun-Su Yoon
  • Patent number: 7783265
    Abstract: A switching element is provided that realizes an stabilize a potential between the gates of the multi-gates without an increase in the insertion loss, and an antenna switch circuit and a radio frequency module each using the switch element. The switching element includes two ohmic electrodes 39, 40 formed on a semiconductor substrate, at least two gate electrodes 41, 42 disposed between the two ohmic electrodes, and a conductive region 45 disposed between the adjacent gate electrodes among the at least two gate electrodes, a field effective transistor being structured by the two ohmic electrodes, the at least two gate electrodes, and the conductive region. The conductive region has a wider portion that is wider in width than the conductive region interposed between the adjacent gate electrodes on one end thereof. The distance between the adjacent gate electrodes is narrower than the width of the wider portion. Resistors 44, 46 are connected in series between the two ohmic electrodes through the wider portion.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: August 24, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Takashi Ogawa, Shinichiro Takatani, Shigeki Koya, Hiroyuki Takazawa, Shinya Osakabe, Akishige Nakajima, Yasushi Shigeno
  • Patent number: 7773037
    Abstract: According to one embodiment, an information processing apparatus including a main body to be detachably docked with an external apparatus including a first antenna and a first radio communication unit which performs radio communication by using the first antenna, a second antenna provided in the main body, a third antenna provided in a predetermined position in the main body, which is closer to the first antenna than to the second antenna, when the main body is docked with the external apparatus, and a second radio communication unit which is provided in the main body, and communicates by radio with the external apparatus by using the third antenna, when the main body is docked with the external apparatus.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: August 10, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Nobuaki Takasu
  • Publication number: 20100194663
    Abstract: A patch antenna system comprises a patch antenna having a patch spatially separated from a ground plane; a plurality of pins interposed between the patch and the ground plane selectively connecting the patch to the ground plane; and a control module operably coupled to the plurality of pins and operable to set an operating frequency characteristic of the patch antenna by selectively connecting the patch to the ground plane with one or more of the plurality of pins.
    Type: Application
    Filed: April 15, 2010
    Publication date: August 5, 2010
    Applicant: Board of Trustees Operating Michigan State University
    Inventors: Edward J. ROTHWELL, Lynn GREETIS
  • Patent number: 7768455
    Abstract: An antenna for controlling a radiation pattern includes a first substrate; a first radiator formed in one surface of the first substrate; a second radiator formed in other surface of the first substrate; and a tuning part which controls a radiation pattern by changing a size of an overlapping region of the first radiator and the second radiator disposed with the first substrate interposed therebetween according to an external control signal. The tuning part includes a plurality of sub-radiators arranged by at least one side of the first radiator or the second radiator, and a plurality of switches. Accordingly, the beam radiation pattern can be easily controlled through the switch control.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: August 3, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chang-won Jung, Young-eil Kim, Jennifer T Bernhard, Jessica Ruyle
  • Publication number: 20100188289
    Abstract: The subject matter discloses a wireless communication system comprising: at least one active phased array antenna unit for transmission and reception of electronic radiation and a phased array circuit for driving and controlling said at least one phased array antenna unit, wherein said at least one phased array antenna unit comprises at least four one dimensional arrays of radiations. The subject matter also discloses a method for utilizing the described system.
    Type: Application
    Filed: September 8, 2008
    Publication date: July 29, 2010
    Applicant: Beam Networks Ltd.
    Inventors: Alberto Milano, Hillel Weinstein
  • Patent number: 7760146
    Abstract: An antenna structure comprises an unbalanced antenna for receiving digital video broadcasting signals. The antenna is dimensioned to fit within an electronic device, such as a mobile phone. The unbalanced antenna has a radiative element and a feed line connected to a matching circuit so as to achieve two or more resonances within a DVB-H frequency range, such as 470 to 702 MHz. The physical length of the radiative element is always smaller than ?/4 at the frequencies of interest (470-702 MHz), but the electrical length can be smaller or substantially equal to ?/4. The matching circuit can comprise one or more LC resonators depending on the number of resonances. The resonators can be series or parallel connected between the feed line and RF circuitry for processing the broadcasting signals. The antenna can be tuned to other bands above the DVB-H frequencies for use as a diversity or MIMO antenna.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: July 20, 2010
    Assignee: Nokia Corporation
    Inventor: Jani Ollikainen
  • Patent number: 7760152
    Abstract: The invention relates to an antenna system that includes transmitter component (1, 2, 3, 4), a reception component (4, 3, 10, 11, 12), and an antenna (5) connected to the transmitter and reception components. According to the invention, the antenna (5) is arranged to connect to different connection points (6, 7, 8) of the transmitter (1, 2, 3, 4) or the reception component (4, 3, 10, 11, 12). The invention is also related to a method in connection with the antenna.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: July 20, 2010
    Assignee: Perlos Oyj
    Inventor: Hekki Seppä
  • Patent number: 7750866
    Abstract: An antenna assembly for wireless communication equipment comprises an antenna structure comprising at least a loop type antenna arranged to deliver a first current when it is used in a balanced mode and/or a second current when it is used in an unbalanced mode with respect to a ground plane from received radio signals, and current extraction device coupled to the antenna structure and arranged to be placed in at least a first state in which the current extraction device delivers the first or second current and a second state in which the current extraction device simultaneously delivers the first and second currents either separately or mixed together.
    Type: Grant
    Filed: May 16, 2006
    Date of Patent: July 6, 2010
    Assignee: NXP B.V.
    Inventors: Vincent Rambeau, Jan Van Sinderen, Johannes H. A. Brekelmans, Marc G. M Notten
  • Patent number: 7750860
    Abstract: A helmet substrate is covered with a highly absorptive layer and an antenna layer. The antenna layer includes a conformal log periodic dipole array wherein adjacent antenna elements connect through switches. By driving appropriate ones of the switches, the log periodic dipole array tunes to a desired frequency band.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: July 6, 2010
    Inventor: Farrokh Mohamadi
  • Publication number: 20100164492
    Abstract: A coil arrangement (32) comprises individual coil segments (381, 382, . . . , 38n) disposed adjacently one another adjacent an examination field (14). At least one radio frequency shield (40) is associated with the coil segments (381, 382, . . . , 38n). The radio frequency shield (40) has a first portion (70), which shields the associated coil segments from adjacent magnetic field and magnetic field gradient generating coils (20, 30), and side elements (72, 74), which shield the coil segments or groups of the segments from each other.
    Type: Application
    Filed: March 8, 2007
    Publication date: July 1, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N. V.
    Inventor: Christoph Leussler
  • Publication number: 20100156727
    Abstract: An electronically steerable antenna includes at least one driven element, at least one controllable counterpoise element, and a support structure on which the driven element and the controllable counterpoise element are disposed. The controllable counterpoise element has at least one geometric characteristic which can be varied. A radiating angle of the driven element is selectively controlled, at least in part, by modifying the geometric characteristic of the at least one controllable counterpoise element. The counterpoise element may include multiple conductive segments, at least a subset of which may be adapted to be individually electrically connected together so as to modify the radiating angle of the driven,element.
    Type: Application
    Filed: August 29, 2007
    Publication date: June 24, 2010
    Inventors: Roger A. Fratti, Anthony J. Grewe
  • Patent number: 7741998
    Abstract: An antenna device for a portable radio communication device operable in at least a first and a second frequency band, includes first and second electrically conductive planar radiating elements. The first radiating element has a feeding portion connectable to a feed device of the portable radio communication device. The second radiating element includes a grounding portion connectable to ground. A controllable switch is arranged between the first and second radiating elements for selectively interconnecting and disconnecting the radiating elements. The state of the switch is controlled by means of a control voltage input. A first filter is arranged between the feeding portion and the control voltage input, to block radio frequency signals. By providing a high pass filter between the first and second radiating elements above a ground plane, quad-band operation is provided with high efficiency in a physically small antenna device.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: June 22, 2010
    Assignee: Laird Technologies AB
    Inventor: Anders Thornell-Pers
  • Publication number: 20100149057
    Abstract: An antenna system internal to a radio device, the system comprising separate antennas and having separate operating bands. The system is implemented as decentralized in a way that each antenna is typically based on a small-sized chip component (310; 320; 330; 340; 350; 360; 610), which are located at suitable places on the circuit board (PCB) and possibly on also another internal surface in the device. The chip component comprises a ceramic substrate and at least one radiating element. The operating band of an individual antenna covers e.g. the frequency range used by a radio system or only the transmitting or receiving band in that range. At least one antenna is connected to an adjusting circuit with a switch, by which the antenna's operating band can be displaced in a desired way. In this case the operating band covers at a time a part of the frequency range used by one or two radio systems.
    Type: Application
    Filed: April 3, 2008
    Publication date: June 17, 2010
    Inventors: Zlatoljub Milosavljevic, Pertti Nissinen, Antti Leskela, Petteri Annamaa
  • Publication number: 20100149067
    Abstract: A parasitic antenna element (20) comprises first and second switches: one at the base (PIN diode 22) and one approximately half way along the parasitic element (PIN diode 28). The lower half of the parasitic element is realized as a coplanar waveguide with a central conductor (32). This not only provides a convenient method for biasing the second PIN diode (28), but the outer conductors (24, 26) provide shielding and reduce coupling of the RF energy into the bias circuitry. The first switch located near the base of the antenna element is provided for selectively coupling the antenna element to a ground plane for quenching a first current mode. The second switch located along the antenna element selectively partitions the antenna element into first and second portions, thereby quenching higher order current modes.
    Type: Application
    Filed: March 27, 2008
    Publication date: June 17, 2010
    Inventors: Neil Williams, Michael Philippakis, Dean Kemp
  • Patent number: 7733276
    Abstract: Embodiments of an antenna system for notebook, laptop and portable computers and methods for communicating in multiple wireless systems are generally described herein. Other embodiments may be described and claimed. In some embodiments, a notebook computer comprises a plurality of transceivers, a plurality of antennas coupled to the transceivers with coaxial cables, and signal separation circuitry coupled to at least one of the coaxial cables to allow the at least one coaxial cable to be shared by two or more of the transceivers.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: June 8, 2010
    Assignee: Intel Corporation
    Inventors: Shmuel Levy, David G. Leeper
  • Patent number: 7733291
    Abstract: According to various aspects, exemplary embodiments are provided of antenna radial systems. In one exemplary embodiment, an antenna radial system generally includes a washer having a channel disposed along a first side of the washer. A radial includes a locking portion configured to be received within the channel. The radial also includes elongate portions extending outwardly from the locking portion such that an angle is defined between each elongate portion and the locking portion. A bushing cooperates with the washer for sandwiching the radial's locking portion therebetween to thereby help retain the radial's locking portion within the channel.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: June 8, 2010
    Assignee: Laird Technologies, Inc.
    Inventor: Imad M. Swais
  • Publication number: 20100131033
    Abstract: The invention relates to an antenna system (AS) for an implantable device like a cardiac pacemaker or a cochlear implant. The antenna system comprises at least two DD coil units (L1, L2) coupled with their terminals (T1 1, T21, T 12, T22) to a control circuit (CC) which can selectively connect the coil units in series or in anti-series, corresponding to an “operational mode” and a “safety mode”, respectively. In the operational mode, magnetically induced voltages (U1, U2) in the coil units add, while they subtract and therefore completely or partially compensate in the safety mode. Thus the implantable device can be protected from damage due to extraordinarily large changing rates of external magnetic fields as they exist for example during MRI examinations.
    Type: Application
    Filed: April 21, 2008
    Publication date: May 27, 2010
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Eugenio Cantatore, Robert Paul Kleihorst
  • Publication number: 20100127951
    Abstract: A multi-antenna system feed device and a terminal including such a device is suggested. The device includes at least: a set of Wilkinson combiners, a branch of a combiner feeding an antenna, with the branches connected as inputs to a feed point; a set of switches connected between the antennas and the combiners with each switch switching a combiner branch to its corresponding antenna with the antenna being connected to the line when the switch is closed; A branch feeding an antenna, for instance, will be common to two consecutive combiners of the system. The suggested multi-antenna system feed device applies in particular to the extension of multi-antenna or sector antenna systems, used especially in devices with Multiple Inputs/Outputs of the MiMo type and more specifically to mesh network architectures.
    Type: Application
    Filed: July 22, 2008
    Publication date: May 27, 2010
    Inventors: Jean-Luc Robert, Philippe Minard, Ali Louzir
  • Patent number: 7724141
    Abstract: A dynamically reconfigurable antenna system for an RFID (Radio Frequency Identification) reader/encoder includes a plurality of antenna elements; and a mechanism constructed and adapted to dynamically and selectively configure said plurality of antenna elements during operation thereof. The antenna elements may be arranged in a pattern of conductive areas, and each antenna element is switchably connectable to ground or to a transmission line connectable to the RFID reader/encoder. Each antenna element may be square, rectangle, circular, or diamond shaped. The antenna elements may located on an inner layer of the multi-layer printed circuit and wherein regions above the antenna elements are a dielectric layer or a slot aperture. The antenna system may be incorporated into an RFID encoder/reader.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: May 25, 2010
    Assignee: ThingMagic, Inc.
    Inventor: Matthew Stephen Reynolds
  • Patent number: 7719458
    Abstract: A radar system having first and second modes of operation comprising a dual antenna assembly comprising first and second antennas having respective first and second antenna waveguides coupled to a waveguide switch operable to divert RF energy to or from either said antenna waveguide, said waveguide switch coupled to a common waveguide, said dual antenna assembly mounted to an antenna support assembly, said first and second antennas being designed for use in said first and second modes respectively and operable for coupling said RF energy to a transmit medium, and for coupling reflected RF energy from transmit medium to said first or second antenna waveguide; and a control processor configured with control logic operable to control the functions of said radar system wherein said first and second antennas are mounted generally perpendicularly in the vertical plane with respect to each other and wherein said radar system operates in only one of said modes of operation at any time.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: May 18, 2010
    Assignee: Baron Services, Inc.
    Inventor: William H. Walker
  • Publication number: 20100117922
    Abstract: An array antenna includes a group of antenna elements and a switching section. The group of antenna elements has a configuration in which a plurality of antenna elements is arranged. The switching section has a plurality of switch elements capable of individually switching the feeding points of the antenna elements included in the group of antenna elements. By switching of the switch elements, the group of antenna elements is converted into an antenna for MIMO communication to transmit and receive a plurality of signals in parallel, or into a directional array antenna to control the directivity towards the direction at which the signals arrive.
    Type: Application
    Filed: December 11, 2007
    Publication date: May 13, 2010
    Inventor: Junichi Fukuda
  • Publication number: 20100117921
    Abstract: Disclosed herein is an integrated connection apparatus for the receivers of a car. The integrated connection apparatus for the receivers of a car, in which two or more receivers are installed in the car, a number of antennas equal to the number of the receivers are installed, and the receivers and the antennas are electrically connected to each other, includes an antenna filtering unit connected to the plurality of antennas and configured to filter radio wave signals, received through the respective antennas, for respective frequency bands, an integrated cable connected to the filtering unit, and configured to provide a path for collecting signals obtained through filtering and transmitting the signals to a receiver side, and a receiver filtering unit connected to the integrated cable, and configured to classify the signals, transmitted through the integrated cable, into signals suitable for the respective receivers and transmit them.
    Type: Application
    Filed: July 9, 2007
    Publication date: May 13, 2010
    Inventors: Kyeong-Soo Choi, Young-Sik Kim
  • Publication number: 20100109846
    Abstract: This disclosure discloses a microstrip antenna comprising: a substrate constructed by a dielectric body; a microstrip antenna pattern configured to be supplied power, formed on one side of said substrate; and a base plate disposed on the other side of said substrate, said microstrip antenna pattern having one power supply point to be connected to a power supply line and two grounding points to be connected to said base plate.
    Type: Application
    Filed: January 13, 2010
    Publication date: May 6, 2010
    Applicant: Brother Kogyo Kabushiki Kaisha
    Inventor: Takuya NAGAI
  • Publication number: 20100109968
    Abstract: An antenna device and a portable terminal device are provided that can be used for radio communication systems having different frequency bands by sharing a single antenna. An antenna device has a spiral antenna 21 formed in a spiral shape; a first feeding part 241 connected to and feeding an electric power to a first radio system operating in a first frequency band; and a second feeding part 242 connected to and feeding an electric power to a second radio system operating in a second frequency band. The antenna device includes: a feeding part switch unit 24 that switches a connecting state of the first feeding part 241 or the second feeding part 242 and an outermost periphery or an inner periphery inside the outermost periphery of the spiral antenna 21, and a grounding switch unit 23 that switches a prescribed point of the outermost periphery of the spiral antenna 21 to either an opening or a grounding.
    Type: Application
    Filed: March 29, 2007
    Publication date: May 6, 2010
    Applicant: PANASONIC CORPORATION
    Inventors: Hidenori Suzuki, Kazutaka Iwase
  • Publication number: 20100103055
    Abstract: A portable electronic device and a magnetic field antenna circuit are provided for making it possible to keep an antenna resonance frequency in a fixed range even if temperature changes. A mobile telephone device (1) is provided with a second communication unit driven by a chargeable battery (43) to execute a predetermined function and an RFID unit (41) accompanied with magnetic communication. The RFID unit (41) includes a magnetic antenna unit (50), which can transmit or receive a wireless signal by a magnetic field, and a capacitor (52), one terminal of which is connected with the magnetic antenna unit (50) to generate a predetermined resonance frequency. The capacitor (52) is characterized in having a temperature-reactance characteristic reverse to an amount of an inductance value that fluctuates as the magnetic antenna unit (50) changes in accordance with temperatures.
    Type: Application
    Filed: February 27, 2008
    Publication date: April 29, 2010
    Applicant: Kyocera Corporation
    Inventors: Kenji Waku, Tadashi Koyama, Masayuki Saito, Yasuhiro Katayama, Katsuji Morishita, Shinobu Kato
  • Publication number: 20100103066
    Abstract: A wireless device having vertically and horizontally polarized antenna arrays can operate at multiple frequencies concurrently. A horizontally polarized antenna array allows for the efficient distribution of RF energy in dual bands using, for example, selectable antenna elements, reflectors and/or directors that create and influence a particular radiation pattern. A vertically polarized array can provide a high-gain dual band wireless environment using reflectors and directors as well. The polarized horizontal antenna arrays and polarized vertical antenna arrays can operate concurrently to provide dual band operation simultaneously.
    Type: Application
    Filed: October 23, 2009
    Publication date: April 29, 2010
    Inventors: Victor Shtrom, William Kish, Bernard Baron
  • Publication number: 20100103065
    Abstract: A wireless device having vertically and horizontally polarized antenna arrays can operate at multiple frequencies concurrently. A horizontally polarized antenna array allows for the efficient distribution of RF energy in dual bands using, for example, selectable antenna elements, reflectors and/or directors that create and influence a particular radiation pattern. A vertically polarized array can provide a high-gain dual band wireless environment using reflectors and directors as well. The polarized horizontal antenna arrays and polarized vertical antenna arrays can operate concurrently to provide dual band operation simultaneously.
    Type: Application
    Filed: October 23, 2009
    Publication date: April 29, 2010
    Inventors: Victor Shtrom, William Kish, Bernard Baron