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    A TERMINAL FOR USE IN A WIRELESS COMMUNICATION SYSTEM AND A METHOD OF OPERATION THEREOF
    1.
    发明申请
    A TERMINAL FOR USE IN A WIRELESS COMMUNICATION SYSTEM AND A METHOD OF OPERATION THEREOF 审中-公开
    用于无线通信系统的终端及其操作方法

    公开(公告)号：WO2007103904A3

    公开(公告)日：2008-02-21

    申请号：PCT/US2007063356

    申请日：2007-03-06

    Applicant: MOTOROLA INC ,  BEN-AYUN MOSHE ,  GROSSMAN OVADIA ,  SERFATY SALOMON ,  SHIRAZI GADI

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

    IPC: H04B1/38

    CPC classification number: H04B7/0811 ,  H04B7/0617 ,  H04B7/082 ,  H04B7/0834 ,  H04B7/0871

    Abstract: A terminal (200) and method for operation thereof 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.

    Abstract translation: 一种在无线通信系统（100）中使用的终端（200）及其操作方法，所述终端包括多个天线（215,235,255）和多个接收机链（217,237,257），每个接收机链包括 相关联的一个天线，终端可操作以接收包括多个时分分割部分的信号，包括第一部分（303）和第二部分（304），其特征在于，终端可以以这样的方式操作： 当正在接收信号的第一部分时，多个接收机链是有效的，并且当正在接收信号的第二部分时，接收机链中的至少一个处于非活动状态。

    AMPLIFIER CIRCUIT AND RF TRANSMITTER INCORPORATING THE CIRCUIT
    2.
    发明申请
    AMPLIFIER CIRCUIT AND RF TRANSMITTER INCORPORATING THE CIRCUIT 审中-公开
    放大器电路和射频发射器连接电路

    公开(公告)号：WO2006115879A3

    公开(公告)日：2006-12-14

    申请号：PCT/US2006014395

    申请日：2006-04-18

    Applicant: MOTOROLA INC ,  FRIEDLANDER HAIM ,  SHIRAZI GADI

    Inventor： FRIEDLANDER HAIM ,  SHIRAZI GADI

    IPC: H03F3/04

    CPC classification number: H03F3/217 ,  H03F1/0238 ,  H03F2200/504

    Abstract: An amplifier circuit including an amplifying device (101) having a first terminal (102) to which an input signal is applicable, a second terminal (104) and a third terminal (103), a voltage source (106) for producing a supply voltage and a regulator (107) for regulating the supply voltage to produce an output voltage for application to the second terminal to cause a direct current to flow through the amplifying device between the second terminal and the third terminal, wherein the amplifier circuit includes means for sampling (112) the direct current flowing between the second terminal and the third terminal and a feedback loop (113) connected from the means for sampling to the regulator to provide a control signal representing the magnitude of the sampled direct current and wherein the regulator is operable to adjust the output voltage to have an envelope form which replicates an envelope form of the control signal.

    Abstract translation: 一种放大器电路，包括具有可输入信号的第一端子（102）的放大装置（101），第二端子（104）和第三端子（103），用于产生电源电压的电压源 以及调节器（107），用于调节电源电压以产生用于施加到第二端子的输出电压，以使直流电流流过第二端子和第三端子之间的放大装置，其中放大器电路包括用于采样的装置 （112）在第二端子和第三端子之间流动的直流电流以及从采样装置连接到调节器的反馈回路（113），以提供表示采样直流电流的幅度的控制信号，并且其中调节器可操作 以将输出电压调整为具有复制控制信号的包络形式的信封形式。

    ANTENNA DIVERSITY ARRANGEMENT, RF TRANSCEIVER ARRANGEMENT AND METHOD OF OPERATION
    3.
    发明申请
    ANTENNA DIVERSITY ARRANGEMENT, RF TRANSCEIVER ARRANGEMENT AND METHOD OF OPERATION 审中-公开
    天线分集安排，射频收发器安排和操作方法

    公开(公告)号：WO2007018803A3

    公开(公告)日：2007-11-01

    申请号：PCT/US2006025134

    申请日：2006-06-28

    Applicant: MOTOROLA INC ,  FRIEDLANDER HAIM ,  BASRI ELIYAHU ,  SHIRAZI GADI

    Inventor： FRIEDLANDER HAIM ,  BASRI ELIYAHU ,  SHIRAZI GADI

    IPC: H04B1/44 ,  H03C7/02 ,  H04B1/48 ,  H04B7/06 ,  H04B7/08 ,  H04B7/185 ,  H04Q3/02

    CPC classification number: H04B1/48 ,  H04B7/0602 ,  H04B7/0805 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/40 ,  Y02D70/444

    Abstract: An antenna diversity arrangement for use with an RF transceiver including: a first antenna (113), a second antenna (115), and a first T/R switching device (209) for coupling the first antenna alternatively to a transmitter connection (202) and a receiver connection (206). A selection switching device is provided for alternatively coupling the first antenna and the second antenna to a receiver connection. The arrangement includes a second T/R switching device (213) for coupling the second antenna (115) alternatively to a transmitter connection (101) and a receiver connection (208)and the selection switching device (211) is operable to couple alternatively (i) the first antenna (113) via the first T/R switching device (209); and (ii) the second antenna (115) via the second T/R switching device (213); to a common receiver connection (210).

    Abstract translation: 一种与RF收发器一起使用的天线分集装置，包括：第一天线（113），第二天线（115）和用于将第一天线交替地耦合到发射机连接（202）的第一T / R开关装置（209） 和接收机连接（206）。 选择开关装置被提供用于交替地将第一天线和第二天线耦合到接收器连接。 该装置包括用于将第二天线（115）交替地耦合到发射机连接（101）和接收机连接（208）的第二T / R切换设备（213），并且选择切换设备（211）可操作以交替地耦合 i）经由所述第一T / R切换装置（209）的所述第一天线（113）; 和（ii）经由第二T / R切换装置（213）的第二天线（115）; 到公共接收机连接（210）。

    CIRCUITS FOR USE IN RADIO COMMUNICATIONS
    4.
    发明申请
    CIRCUITS FOR USE IN RADIO COMMUNICATIONS 审中-公开
    无线电通信使用电路

    公开(公告)号：WO2005107076B1

    公开(公告)日：2006-02-23

    申请号：PCT/US2005013207

    申请日：2005-04-19

    Applicant: MOTOROLA INC ,  LUZZATTO ARIEL ,  FRIEDLANDER HAIM ,  SHIRAZI GADI

    Inventor： LUZZATTO ARIEL ,  FRIEDLANDER HAIM ,  SHIRAZI GADI

    IPC: H03L7/087 ,  H03L7/113 ,  H03L7/18 ,  H03L7/185 ,  H03L7/20

    CPC classification number: H03L7/185 ,  H03L2207/12

    Abstract: A frequency synthesiser circuit for use in wireless communications including a phase locked loop including a VCO (voltage controlled oscillator), wherein the synthesiser circuit includes a further oscillator which in operation is a free running oscillator at a frequency higher than the VCO and a mixer connected to receive input signals from the VCO and from the further oscillator and to combine such signals. Also described is a wireless communications transmitter or receiver incorporating the frequency synthesiser circuit.

    Abstract translation: 一种用于包括VCO（压控振荡器）的锁相环的无线通信的频率合成器电路，其中所述合成器电路包括另外的振荡器，所述振荡器在高于VCO的频率下是自由振荡器，并且混频器连接 以从VCO和另外的振荡器接收输入信号并组合这样的信号。 还描述了包含频率合成器电路的无线通信发射机或接收机。

    Antenna diversity arrangement for an rf transceiver
    5.
    发明专利
    Antenna diversity arrangement for an rf transceiver 未知

    公开(公告)号：GB2428917A

    公开(公告)日：2007-02-07

    申请号：GB0516057

    申请日：2005-08-04

    Applicant: MOTOROLA INC

    Inventor： FRIEDLANDER HAIM ,  BASRI ELIYAHU ,  SHIRAZI GADI

    IPC: H04B1/44 ,  H04B1/48 ,  H04B7/06 ,  H04B7/08

    Abstract: An antenna switching arrangement is disclosed for an rf transceiver which may operate at 2.4GHz or 5GHz. It has been recognised that antenna diversity, if required, is needed only in the receive mode and not in the transmit mode. The resulting circuit comprises a first antenna 113 connected to the common terminal (pole) of a first spdt switch 209, a second antenna 115 connected to the common terminal of a second spdt switch 213, the first and second switches being connected to respective transmitters 101 and 103. The first and second switches are connected to a third spdt switch 211 which in turn connects the antennas to a common receiver 105. This circuit connects each transmitter to its respective antenna through a path which includes only one transmit-receive switch, and thus reduces transmit power losses in comparison to prior art arrangements (fig. 1) in which the transmitter signal must pass through more than one switch.

    A transmitter splits a signal into a plurality of sub-signals, each containing a plurality of sub-carriers, and amplifies each sub-signal separately.
    6.
    发明专利
    A transmitter splits a signal into a plurality of sub-signals, each containing a plurality of sub-carriers, and amplifies each sub-signal separately. 未知

    公开(公告)号：GB2428168A

    公开(公告)日：2007-01-17

    申请号：GB0513752

    申请日：2005-07-06

    Applicant: MOTOROLA INC

    Inventor： SHIRAZI GADI ,  FRIEDLANDER HAIM ,  LUZZATTO ARIEL ,  SERAFY SALOMON

    IPC: H04L27/26

    Abstract: An RF transmitter (200) including means (201) for generating a multi-carrier modulation signal comprising a plurality of sub-carriers, means (309 fig 3) for modulating an RF carrier signal (c(t)) with the sub-carriers of the multi-carrier modulation signal to produce a modulated signal, a signal splitter (305 fig 3) to split a signal including the sub-carriers of the multi-carrier modulation signal into a plurality of sub-signals each including a sub-set of the plurality of sub-carriers, a plurality of power amplifiers (203) each operable to amplify a separate one of the sub-signals to produce an amplified sub-signal and an RF power combiner (205) operable to combine the amplified sub-signals for transmission as a combined amplified RF signal. The invention may be used for OFDM transmission. It reduces the peak-to-average power ratio (PAPR).

    Circuit for control of receiver dynamic range in order to save battery current
    9.
    发明专利
    Circuit for control of receiver dynamic range in order to save battery current 未知

    公开(公告)号：GB2381415A

    公开(公告)日：2003-04-30

    申请号：GB0125463

    申请日：2001-10-24

    Applicant: MOTOROLA INC

    Inventor： SHIRAZI GADI ,  FRIEDLANDER HAIM

    IPC: H04B1/10 ,  H04B1/16 ,  H04B1/06

    Abstract: A receiver circuit for use in a wireless communication unit (100) includes signal measurement means (112, 270, 280) for measuring a wideband signal strength of a received radio frequency signal. The receiver also includes a signal processor (225) operably coupled to the signal measurement means (112, 270, 280) for determining whether a dynamic range performance of the receiver should be adapted based on the measured wideband signal strength. A radio frequency amplifier (220), has a current level controlled (290) by a control signal produced by the signal processor (225), wherein the signal processor (225) controls the current consumption of the radio frequency amplifier (220) to set a dynamic range performance of the receiver. The receiver circuit provides the advantage that the necessary dynamic range is determined in an adaptive, real-time manner so as to save battery current.

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