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    ANTENA HELICOIDAL.
    62.
    发明专利
    ANTENA HELICOIDAL. 未知

    公开(公告)号：ES2260461T3

    公开(公告)日：2006-11-01

    申请号：ES02748837

    申请日：2002-07-01

    Applicant: MOTOROLA INC ,  MOTOROLA LTD

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

    IPC: H01Q1/36 ,  H01Q9/36 ,  H01Q11/08

    Abstract: Una antena (1) para su uso en un dispositivo de radiocomunicaciones, teniendo la antena una longitud no mayor de 100 mm, e incluyendo una primera parte (3) que comprende una bobina helicoidal o espiral conductora, que se extiende a lo largo de un eje (2), y situada y conectada eléctricamente entre dos partes adicionales, es decir una segunda parte (5) para la conexión a un conductor del dispositivo de radio, y comprendiendo una parte adaptadora lineal conductora, y una tercera parte (7) que comprende una parte capacitiva conductora, en donde las partes están dispuestas mutuamente para proporcionar a una frecuencia operativa del dispositivo de radio, una estructura de resonancia eléctrica, en la que la tercera parte (7) comprende un cilindro hueco que se extiende a lo largo del eje de la bobina, caracterizada porque el cilindro hueco comprende una placa curvada, y porque la tiene un espacio libre (7c) entre sus bordes laterales (7a, 7b).

    Receiver for use in wireless communications
    65.
    发明专利
    Receiver for use in wireless communications 未知

    公开(公告)号：GB2415846A

    公开(公告)日：2006-01-04

    申请号：GB0414459

    申请日：2004-06-29

    Applicant: MOTOROLA INC

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

    IPC: H03D3/00

    Abstract: A wireless receiver for receiving and demodulating a frequency modulated RF signal by direct conversion includes, a circuit 107,109,113 producing in-phase and quadrature components of the received signal, and an estimator 204 periodically estimating an imbalance in amplitude between the in-phase and quadrature components and applying a relative adjustment in amplitude to compensate for the detected imbalance 205. The estimator 204 (i) divides samples I i of the in-phase component I (t) and corresponding samples Q i of the quadrature component Q (t) into blocks; (ii) calculates for each block a block power value I n corresponding to a summation of values of squares of the samples I i and a block power value Q n corresponding to a summation of values of squares of the samples Q i; (iii) calculates from the block power values I n and Q n a block amplitude imbalance value and (iv) calculates for a set of the block amplitude imbalance values an average value.

    Receiver for use in wireless communications
    68.
    发明专利
    Receiver for use in wireless communications 未知

    公开(公告)号：GB2414609A

    公开(公告)日：2005-11-30

    申请号：GB0411888

    申请日：2004-05-28

    Applicant: MOTOROLA INC

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

    IPC: H03D3/00 ,  H03K9/06

    Abstract: A wireless receiver (200) for receiving and demodulating a frequency modulated RF signal by a direct conversion procedure includes an input signal path (101), a local oscillator (111), first mixer (107), a quadrature phase shifter (113), a second mixer (109) and means (218) for producing an output demodulated information signal by producing a combining function of the in-phase and quadrature component. Means (212, 214) periodically detect an error in the relative phase difference between the in-phase and quadrature components and apply (217) a relative adjustment in phase difference to compensate for the detected error.

    RF power amplifier with feedback-controlled dc supply voltage
    69.
    发明专利
    RF power amplifier with feedback-controlled dc supply voltage 未知

    公开(公告)号：GB2412797A

    公开(公告)日：2005-10-05

    申请号：GB0407562

    申请日：2004-04-02

    Applicant: MOTOROLA INC

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

    IPC: H03G3/00 ,  H03G3/30

    Abstract: An RF PA, with particular application to a constant envelope RF transmitter, is controlled to operate near saturation by feedback control of its power supply voltage. In a transmitter, a coupler 107 and detector 109 provide a feedback signal to a comparator 115, which also receives a reference signal from reference source 113. A control signal Vcont is produced by integrating (117) the difference signal from the comparator 115. In prior art, the control signal Vcont adjusts the bias of the RFPA 101. In the present invention, the control signal instead adjusts the output of a voltage regulator 151 to provide a variable supply voltage for the RF PA. The voltage regulator 151 may reduce or increase the voltage of the battery supply 104. The bias voltage may be held constant. Increased efficiency is achieved and the efficiency is substantially constant and not dependent on the saturation point of the particular RF PA device 101 that is used.

    Magnetically coupled dual band antenna
    70.
    发明专利
    Magnetically coupled dual band antenna 未知

    公开(公告)号：GB2409108A

    公开(公告)日：2005-06-15

    申请号：GB0328921

    申请日：2003-12-13

    Applicant: MOTOROLA INC

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

    IPC: H01Q1/24 ,  H01Q1/36 ,  H01Q5/00 ,  H01Q5/10 ,  H01Q5/378 ,  H01Q5/49 ,  H01Q11/08

    Abstract: A radio unit 200, such as a cellular telephone or a GPS receiver has an antenna arrangement with two resonators. The first resonator 201 is galvanically coupled to the transceiver 203 via a connector 205. The second resonator 207 is magnetically coupled to and galvanically isolated from the first resonator. The second resonator has a coupling section 209 and a radiating section 211. The second antenna may be in a detachable housing which may be friction mounted on the housing of the first resonator (see fig 4). The first resonator may be a helical coil. The coupling section and radiating of the second resonator may be made of a single conductive wire.

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