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    • 94. 发明申请
    • DIRECT CONVERSION DELTA-SIGMA TRANSMITTER
    • 直接转换DELTA-SIGMA发射机
    • WO2006057649A2
    • 2006-06-01
    • PCT/US2005/000751
    • 2005-01-10
    • TECHNOCONCEPTS, INC.
    • HICKLING, Ronald, M.
    • H04B14/06H04L27/20
    • H03C3/40H03M3/40H03M3/50H04B1/69H04B14/062
    • A flexible and programmable circuit for generating a radio frequency signal for transmission includes two delta-sigma modulators (62,64), a quadrature clock generator (70) for generating two clock signals (71, 73) having a 90 degree phase difference, two commutators (66, 68) for multiplying the two modulator outputs by +1 and -1 on alternating half cycles of the two quadrature clock signals respectively, a summer (80) for summing the two commutated outputs, and a filter (82) for removing unwanted frequency components before transmission. The circuit directly generates a radio frequency signal without the need for additional frequency translation after the commutation stage.
    • 用于产生用于传输的射频信号的灵活且可编程的电路包括两个Δ-Σ调制器(62,64),用于产生具有90度相位差的两个时钟信号(71,73)的正交时钟发生器(70) 用于在两个正交时钟信号的交替半周期上将两个调制器输出乘以+1和-1的换向器(66,68),用于对两个换向输出求和的加法器(80)和用于去除 传输前不需要的频率分量。 电路直接产生射频信号,而不需要在换向级之后进行额外的频率转换。
    • 96. 发明申请
    • SYSTEM AND METHOD FOR AN IMPROVED QUADRATURE UPCONVERTER FOR I/Q MODULATION USING INTERMEDIATE FREQUENCY CARRIERS
    • 用于使用中间频率载波进行I / Q调制的改进的正交逆变器的系统和方法
    • WO2005048462A2
    • 2005-05-26
    • PCT/US2004/034057
    • 2004-10-14
    • TERAYON COMMUNICATION SYSTEMS, INC.RAKIB, ShlomoARAD, OrenFANFELLE, Robert
    • RAKIB, ShlomoARAD, OrenFANFELLE, Robert
    • H04B
    • H04L27/364H03C3/40H04L2027/0016H04L2027/0018
    • A signal transmitter for sending a radio signal is made up of an input for receiving input data and a first circuit for generating an inphase signal and a quadrature signal from the input data. A second circuit produces a first signal associated with a cosine of a first frequency and a third circuit that produces a second signal associated with a sine of the first frequency. A first modulator, coupled to the first circuit and the second circuit, upconverts the inphase signal with the first signal and produces a first upconverted signal. A second modulator, coupled to the first circuit and the third circuit, upconverts the inphase signal with the second signal and produces a second upconverted signal. A third modulator, coupled to the first circuit and the second circuit, upconverts the quadrature signal with the first signal and produces a third upconverted signal. A fourth modulator, coupled to the first circuit and the third circuit, upconverts the quadrature signal with the second signal and produces a fourth upconverted signal. A fourth circuit, coupled to the first and fourth modulators, combines the first upconverted signal and the fourth upconverted signal into a first intermediate signal. A fifth circuit, coupled to the second and third modulators, combines an inverse of the second upconverted signal and the third upconverted signal into a second intermediate signal. A quadrature modulator, coupled to the fourth circuit and the fifth circuit, converts the first intermediate signal and the second intermediate signal to an output signal. The output signal has a component at a first sideband of a second frequency, the first sideband frequency offset from the second frequency by a first amount. A filter, coupled to the quadrature modulator, passes the first sideband, and filters the second frequency and a second sideband, the second sideband offset from the second frequency by the inverse of the first amount.
    • 用于发送无线电信号的信号发送器由用于接收输入数据的输入端和用于从输入数据产生同相信号和正交信号的第一电路组成。 第二电路产生与第一频率的余弦相关联的第一信号和产生与第一频率的正弦相关联的第二信号的第三电路。 耦合到第一电路和第二电路的第一调制器利用第一信号上变频同相信号并产生第一上变频信号。 耦合到第一电路和第三电路的第二调制器利用第二信号对同相信号进行上变频,并产生第二上变频信号。 耦合到第一电路和第二电路的第三调制器利用第一信号对正交信号进行上变频,并产生第三上变频信号。 耦合到第一电路和第三电路的第四调制器利用第二信号对正交信号进行上变频,并产生第四上变频信号。 耦合到第一和第四调制器的第四电路将第一上变频信号和第四上变频信号组合成第一中间信号。 耦合到第二和第三调制器的第五电路将第二上变频信号和第三上变频信号的反相组合成第二中间信号。 耦合到第四电路和第五电路的正交调制器将第一中间信号和第二中间信号转换为输出信号。 输出信号具有在第二频率的第一边带处的分量,第一边带频率从第二频率偏移第一量。 耦合到正交调制器的滤波器通过第一边带,并且对第二频率和第二边带进行滤波,第二边带从第二频率偏移第一数量的倒数。
    • 99. 发明申请
    • METHOD AND APPARATUS FOR TRANSMISSION USING DIGITAL MODULATOR
    • 使用数字调制器传输的方法和装置
    • WO2004034596A3
    • 2004-07-15
    • PCT/US0331797
    • 2003-10-07
    • MA COM INC
    • AHMED WALID KHAIRY MOHAMED
    • H03C3/40H04L27/36
    • H04L27/361H03C3/40
    • The invention relates to a system for electromagnetic processing of an input wave involving receiving a modified signal derived from two or more signals that represent the input wave when combined; and alternately regulating the modified signal using a digital signal containing at least one characteristic of said two or more signals. The invention may utilize in-phase and quadrature phase signals, where the magnitude portion of the signals may be used for regulating the modified signal. The modified signal may be created by modulating a characteristic of the I, Q signals, such as their sign, with an RF or other frequency carrier wave.
    • 本发明涉及一种输入波的电磁处理系统,涉及在组合时接收由表示输入波的两个或多个信号导出的修正信号; 并且使用包含所述两个或更多个信号的至少一个特性的数字信号交替地调节修改的信号。 本发明可以利用同相和正交相位信号,其中信号的幅度部分可以用于调节修改的信号。 可以通过用RF或其它频率载波调制诸如它们的符号的I,Q信号的特性来产生修改的信号。
    • 100. 发明申请
    • TRANSMITTER
    • 发射机
    • WO2004036737A3
    • 2004-06-24
    • PCT/US0331786
    • 2003-10-07
    • MA COM INC
    • AHMED WALID KHAIRY MOHAMED
    • H03C3/40H03C5/00H04L27/36
    • H04L27/361H03C3/40H03C5/00
    • The invention relates to a system for electromagnetic processing of an input wave involving the steps of receiving a modified signal derived from two or more signals that represent the input wave when combined; and regulating the modified signal using a digital signal containing at least one characteristic of the two or more signals. Embodiments of the invention may utilize in-phase and quadrature phase signals, where the magnitude portion of the signals may be used for regulating the modified signal. The modified signal may be created by modulating a characteristic of the I, Q signals, such as their sign, with an RF or other frequency carrier wave.
    • 本发明涉及一种用于输入波的电磁处理的系统,该系统涉及当组合时接收由表示输入波的两个或多个信号导出的修正信号的步骤; 以及使用包含两个或更多个信号的至少一个特性的数字信号来调节修改的信号。 本发明的实施例可以利用同相和正交相位信号,其中信号的幅度部分可以用于调节修改的信号。 可以通过用RF或其它频率载波调制诸如它们的符号的I,Q信号的特性来产生修改的信号。