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    11.
    发明专利
    未知

    公开(公告)号：SE9604433L

    公开(公告)日：1996-12-02

    申请号：SE9604433

    申请日：1996-12-02

    Applicant: MOTOROLA INC

    Inventor： ROTTINGHAUS ALAN PATRICK ,  LUREY DANIEL MORRIS ,  LUZ YUDA YEHUDA

    IPC: H03C1/00 ,  H03C3/00 ,  H04B1/26 ,  H04B7/08 ,  H04L1/06 ,  H04L1/22 ,  H04L27/20 ,  H04Q7/30 ,  H04Q7/38 ,  H04B1/16

    Abstract: A multiple access digital up converter/modulator includes selectors (1606, 1608) having inputs (1602, 1604) and outputs coupled to first and second interpolating filters (1610, 1626). The output of the first interpolating filter is selectively coupled to a first mixer (1612) and a first adder (1622), the first adder also receiving a first phase value, and the output is coupled to a first phase accumulator (1616) the output of which is coupled to a first sinusoid generator (1614) and selectively coupled to a second sinusoid generator (1630). The outputs of each of the first and second mixers are selectively coupled to an output adder (1634) and to inputs of the first and second mixers. The output of the second interpolating filter (1626) is selectively coupled to a second mixer (1628) and a second adder (1638), which also receives a second phase value and the output of which is coupled to a second phase accumulator (1640) the output of which is selectively coupled to the second sinusoid generator.

    Hybrid matrix amplifier
    15.
    发明专利
    Hybrid matrix amplifier 未知

    公开(公告)号：GB2333917B

    公开(公告)日：2000-11-15

    申请号：GB9907897

    申请日：1997-09-05

    Applicant: MOTOROLA INC

    Inventor： SCHIEMENZ JR ARTHUR FRED ,  LUZ YUDA YEHUDA ,  ANDERSON DALE ROBERT ,  JALLOUL LOUAY ADEL

    IPC: H03F3/60 ,  H03F3/68 ,  H04B1/04

    Abstract: In a hybrid matrix amplifier array (100), a configurable digital transform matrix (116) is initialize with a matrix of transform coefficients. A plurality of digital input signals (M1-M4) are received at inputs of the configurable digital transform matrix (116). The plurality of digital input signals are transformed to produce a plurality of transform digital signals (A1-A4) using the matrix of transform coefficients. The plurality of transform digital signals are converted to a plurality of transformed analoged signals (206) to produce a plurality of transformed analog signals. The transformed analog signals are amplified (104, 208) to produce amplified transformed signals. Finally, the amplified transformed signals are inverse transformed (102, 210) to produce output signals that correspond to a respective digital input signal (M1-M4). Upon sensing a failure in an amplifier array (104,126) a controller (128) recalls matrix transform coefficients from a memory (130) and write and reconfigures the digital transform matrix (116) to minimize the effects of the amplifier failure at the hybrid matrix amplifier outputs (132).

    Multiple access up converter/modulator and method
    17.
    发明专利
    Multiple access up converter/modulator and method 未知

    公开(公告)号：AU695320B2

    公开(公告)日：1998-08-13

    申请号：AU5356696

    申请日：1996-02-29

    Applicant: MOTOROLA INC

    Inventor： ROTTINGHAUS ALAN PATRICK ,  LUREY DANIEL MORRIS ,  LUZ YUDA YEHUDA

    IPC: H03C1/00 ,  H03C3/00 ,  H04B1/26 ,  H04B7/08 ,  H04L1/06 ,  H04L1/22 ,  H04L27/20 ,  H04Q7/30 ,  H04Q7/38

    Abstract: A multiple access digital up converter/modulator includes selectors (1606, 1608) having inputs (1602, 1604) and outputs coupled to first and second interpolating filters (1610, 1626). The output of the first interpolating filter is selectively coupled to a first mixer (1612) and a first adder (1622), the first adder also receiving a first phase value, and the output is coupled to a first phase accumulator (1616) the output of which is coupled to a first sinusoid generator (1614) and selectively coupled to a second sinusoid generator (1630). The outputs of each of the first and second mixers are selectively coupled to an output adder (1634) and to inputs of the first and second mixers. The output of the second interpolating filter (1626) is selectively coupled to a second mixer (1628) and a second adder (1638), which also receives a second phase value and the output of which is coupled to a second phase accumulator (1640) the output of which is selectively coupled to the second sinusoid generator.

    HYBRID MATRIX AMPLIFIER WITH NOISE REDUCTION
    18.
    发明专利
    HYBRID MATRIX AMPLIFIER WITH NOISE REDUCTION 未知

    公开(公告)号：CA2255795A1

    公开(公告)日：1997-12-04

    申请号：CA2255795

    申请日：1997-03-24

    Applicant: MOTOROLA INC

    Inventor： LUZ YUDA YEHUDA

    IPC: H03F3/68 ,  H03F1/32 ,  H03F3/60

    Abstract: An input signal (102) and a dithering signal (106) are coupled to an input of an n by m transform matrix (98). The input signal (102) and the dithering signal (106) are transformed to produce m transformed signals, which are then amplified using a plurality of amplifiers (64). The amplified signals are then input into an m by n inverse transform matrix (100) that performs an inverse transform to produce a low noise output signal. The low noise output signal may be passed through a band pass filter (74) to remove out-of-band noise derived from the dithering signal and provide a filtered output signal (110). The transform matrix (98) and inverse transform matrix (100) may be implemented with Fourier transform matrices or a Butler transform matrices.

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