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    A terminal having multiple antennas and receiver chains
    41.
    发明专利
    A terminal having multiple antennas and receiver chains 未知

    公开(公告)号：GB2435985A

    公开(公告)日：2007-09-12

    申请号：GB0604533

    申请日：2006-03-07

    Applicant: MOTOROLA INC

    Inventor： BEN-AYUN MOSHE ,  GROSSMAN OVADIA ,  SERFATY SALOMON ,  SHIRAZI GADI

    IPC: H04B7/00 ,  H04B1/00 ,  H04Q7/32 ,  H04Q7/36

    Abstract: A terminal (200) for use in a wireless communication system (100), the terminal including a plurality of antennas (215, 235, 255) and a plurality of receiver chains (217, 237, 257) each including an associated one of the antennas, the terminal being operable to receive a signal including a plurality of time divided portions including a first portion (303) and a second portion (304), characterised in that the terminal is operable in a manner such each of the plurality of receiver chains is active when the first portion of the signal is being received and at least one of the receiver chains is inactive when the second portion of the signal is being received.

    Antenna
    43.
    发明专利
    Antenna 未知

    公开(公告)号：GB2409109B

    公开(公告)日：2006-08-09

    申请号：GB0328922

    申请日：2003-12-13

    Applicant: MOTOROLA INC

    Inventor： GROSSMAN OVADIA ,  BEN-AYUN MOSHE ,  ROZENTAL MARK

    IPC: H01Q5/00 ,  H01Q1/36 ,  H01Q5/10 ,  H01Q5/357 ,  H01Q9/36

    Abstract: An antenna for use in a mobile radio communication device includes a conductive helical or spiral coil portion extending along an axis and, galvanically coupled to the coil portion, a conductive capacitive top load portion, wherein the coil portion and the top load portion are mutually arranged to provide an electrically resonant structure in a frequency band of operation of the device, wherein the coil portion has a first part and a second part and at least part of the top load portion extends outside or alongside the second part but not the first part of the coil portion, wherein the resonant structure has a plurality of electrical resonances at frequencies in a frequency band of operation of the device, and the first and second parts of the coil portion contribute to one of the resonances and the first part of the coil portion and the second portion contribute to another of the resonances.

    Wireless subscriber communication unit and antenna arrangement therefor
    46.
    发明专利
    Wireless subscriber communication unit and antenna arrangement therefor 未知

    公开(公告)号：GB2395843B

    公开(公告)日：2006-04-26

    申请号：GB0227929

    申请日：2002-11-29

    Applicant: MOTOROLA INC

    Inventor： GROSSMAN OVADIA ,  BEN-AYUN MOSHE ,  ROZENTAL MARK

    IPC: H01Q21/28 ,  H01Q1/24 ,  H01Q21/24 ,  H04B7/06

    Abstract: A wireless subscriber communication unit ( 200 ) comprises an antenna arrangement ( 202, 330, 430 ) for radiating and/or receiving electromagnetic signals. A transmitter ( 220 ) and/or a receiver ( 210 ) is/are operably coupled to the antenna arrangement ( 202, 330, 430 ), for transmitting/receiving a radio signal. An antenna arrangement comprises an internal antenna located within the wireless communication unit ( 200 ) and an external antenna located substantially outside of the wireless communication unit, such that both the internal antenna ( 330, 430 ) and the external antenna ( 202 ) co-operate on substantially the same electromagnetic signal. In this manner, by provision of both an internal and an external antenna the wireless subscriber communication unit is able to function adequately should an antenna become disconnected, malfunction, or its performance suffer from impedance mismatching. Preferably, the internal and external antennas can be configured to be orthogonal to one another, thereby providing the wireless subscriber unit with the ability to operate with a substantially circular or elliptical polarization.

    Antenna formed by coaxial conductors with slot and coil sections
    48.
    发明专利
    Antenna formed by coaxial conductors with slot and coil sections 未知

    公开(公告)号：GB2415544A

    公开(公告)日：2005-12-28

    申请号：GB0414231

    申请日：2004-06-25

    Applicant: MOTOROLA INC

    Inventor： ZEHNGUT IIAN ,  GROSSMAN OVADIA ,  SLOTIN HAIM

    IPC: G08C17/02 ,  H01Q1/04 ,  H01Q1/22 ,  H01Q25/00

    Abstract: A radio frequency (RF) communication device 100 and a method of its operation or construction comprise an antenna 102 with an elongate member having first 107, second 108 and third 112 portions. All of the said portions 107, 108, 112 have a common first conductor 109. The first and second portions 107, 108 have second conductors 111 arranged parallel to the first conductor 109 with insulating material 110 between the first and second conductors and the said second conductors are isolated from one another. The antenna 102 is attached to a transmitter 106 and may be formed by a flexible coaxial cable with a slot in the outer conductor. The device may be used for a meter located in a pit. The transmitter 106 may be arranged with the antenna 102 extending down or up from the transmitter with the transmitter mounted in a perpendicular manner to the lid of the pit. The antenna 102 may include said first, second and third portions in a linear section of the antenna. A further loading and radiating portion in the form of a coil may extend from the linear section and may be formed as a result of insertion into a support structure. The further coil portion is formed in a plane parallel to that of the pit lid and perpendicular to the linear section of the antenna. The antenna arrangement may operate in either or both horizontal and vertical polarizations and may be arranged close to ground level to avoid unwanted ground reflections. The length of the second and third portions may equal that of the first portion combined with the length of the transmitter casing 101 and may be equivalent to a quarter wavelength of the radiation to be emitted.

    Dual frequency antenna for a mobile telephone
    49.
    发明专利
    Dual frequency antenna for a mobile telephone 未知

    公开(公告)号：GB2401248A

    公开(公告)日：2004-11-03

    申请号：GB0309952

    申请日：2003-04-30

    Applicant: MOTOROLA INC

    Inventor： GROSSMAN OVADIA ,  BEN-AYUN MOSHE ,  ROZENTAL MARK

    IPC: H01Q1/24 ,  H01Q5/00 ,  H01Q5/357 ,  H01Q9/30 ,  H01Q21/30

    Abstract: An antenna 1 comprises an elongate conducting radiator 7 and a feedline 5. The feedline is screened and has a signal conductor 5a and a screening conductor 5b. A conducting sleeve 9 surrounds both the radiator 7 and the feedline 5 at their junction. The conducting sleeve 9 may or may not be connected to the feedline screening conductor 5b. Region A forms an effective inductance and region B forms an effective capacitance; the sleeve 9 therefore constitutes an rf impedance. The antenna operates as a quarter wave monopole at one frequency band and a half wave dipole at a second band. The two frequency bands may be the GPS (global positioning system) frequency at 1575 MHz and a UHF communications band at 380 to 420 MHz. The antenna may be used in a mobile phone or similar device.

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