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    APPARATUS AND METHOD FOR TRANSMITTER PHASE SHIFT COMPENSATION
    22.
    发明公开
    APPARATUS AND METHOD FOR TRANSMITTER PHASE SHIFT COMPENSATION 有权
    DEVICE AND METHOD FOR站第一期移补偿

    公开(公告)号：EP1652303A4

    公开(公告)日：2007-11-28

    申请号：EP04779251

    申请日：2004-07-27

    Applicant: MOTOROLA INC

    Inventor： KLOMSDORF ARMIN ,  SCHWENT DALE G ,  TROCKE ROBERT S

    IPC: H03M1/00 ,  H04B1/04 ,  H04L27/20 ,  H04L27/36

    CPC classification number: H04B1/0475 ,  H04B2001/0416 ,  H04L27/20 ,  H04L27/367

    Abstract: A transmitter circuit (10) includes a phase shifter (20) that receives phase shift compensation and timing data (40), and an amplifier (30) that receives a control signal (70) to initiate an efficiency enhancement technique. The phase shifter (20) receives the phase shift compensation and timing data (40), and the amplifier (30) receives the control signal (70) at a pre-defined relative time such that the compensation phase shift by the phase shifter (20) compensates for a pre-determined phase change in the amplifier (30) to produce an RF output signal (80) with a reduced predicted phase change.

    Power amplification circuit and method for supplying power at a plurality of desired power output levels
    23.
    发明专利
    Power amplification circuit and method for supplying power at a plurality of desired power output levels 未知

    公开(公告)号：GB2395382B

    公开(公告)日：2006-03-15

    申请号：GB0323873

    申请日：2003-10-13

    Applicant: MOTOROLA INC

    Inventor： KLOMSDORF ARMIN ,  CONRAD CLARK ,  GREENE MATTHEW

    IPC: H03F3/24 ,  H03F1/02 ,  H03G3/30 ,  H03F1/32 ,  H03F3/20 ,  H03G3/10 ,  H03G3/20 ,  H04B1/04 ,  H04Q7/32

    Abstract: The present invention provides a method and apparatus for supplying power to a load at a plurality of different power levels. The method includes changing between high and low power outputs of the power amplifier when amplifying a signal having a common modulation format. A different bias is applied to the power amplifier at the low power output than the bias applied to the power amplifier at the high power output. The output of the power amplifier is loaded with a different impedance at the low power output than the impedance loaded at the output of the power amplifier output at the high power output. In at least one embodiment, the power amplifier changes between high and low power outputs at a different threshold level dependant upon whether the power amplifier is transitioning from the high power output to the low power output, or whether the power amplifier is transitioning from the low power output to the high power output.

    Radio transceiver architectures and methods
    24.
    发明专利
    Radio transceiver architectures and methods 未知

    公开(公告)号：AU2003256687A8

    公开(公告)日：2004-02-16

    申请号：AU2003256687

    申请日：2003-07-22

    Applicant: MOTOROLA INC

    Inventor： STENGEL ROBERT ,  KLOMSDORF ARMIN ,  ALBERTH WILLIAM JR

    IPC: H04B1/40 ,  H04B1/38

    Abstract: A radio communications device 100 including a processor 120 having a digital signal processor (DSP) coupled to a transceiver 110. The transceiver includes a digital-to-phase synthesizer having one or more independently variable frequency or phase signal outputs coupled to a transmitter and/or to a receiver. The variable frequency and phase outputs of the digital-to phase synthesizer are mixed with corresponding received signals and are capable of frequency or phase modulating information signals for transmission. Amplitude modulated signals may be provided through polar modulation by combining synthesizer outputs at a summer.

    26.
    发明专利
    未知

    公开(公告)号：BR0002979A

    公开(公告)日：2001-07-31

    申请号：BR0002979

    申请日：2000-07-19

    Applicant: MOTOROLA INC

    Inventor： KLOMSDORF ARMIN ,  WINKELMANN LUKE EDWARD ,  LANDHERR MICHAEL

    IPC: H03F3/24 ,  H03F1/02 ,  H03F1/56 ,  H03F3/20 ,  H03G3/02 ,  H04B1/18 ,  H04B1/52 ,  H03G3/30 ,  H03F3/21

    Abstract: A power amplifier load adjust system includes a power amplifier and a variable impedance network coupled to the output of the power amplifier. The variable impedance network presents a plurality of impedances to the output of the power amplifier responsive to a load control signal. A control circuit generates a transmit power command and a channel frequency command. Memory stores a plurality of control values as a function of output power and frequency. A processing circuit coupled to the variable impedance network, the control circuit, and the memory retrieves the plurality of control values and uses them to generate the load control signal in response to the transmit power command and the channel frequency command.

    29.
    发明专利
    未知

    公开(公告)号：FR2797360A1

    公开(公告)日：2001-02-09

    申请号：FR0009161

    申请日：2000-07-13

    Applicant: MOTOROLA INC

    Inventor： KLOMSDORF ARMIN ,  ALBERTH WILLIAM PAUL JR ,  WINKELMANN LUKE

    IPC: H03F1/02 ,  H03F1/32 ,  H03F3/20 ,  H03F3/24 ,  H03G3/20 ,  H04B1/04 ,  H04Q7/22 ,  H04B7/005

    Abstract: A power amplifying circuit with load adjust for control of adjacent and alternate channel power. A power amplifier amplifies an input signal to produce an amplified signal. A variable impedance network presents different impedances to the output of the power amplifier responsive to a load control signal. A peak-to-average detector provides an indication of a peak-to-average ratio of the amplified signal. A controller coupled to the peak-to-average detector and the variable impedance network produces the load control signal responsive to the indication of the peak-to-average ratio.

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