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Invention Application
WO0251003A3 GENERATING TWO SIGNALS HAVING A MUTUAL PHASE DIFFERENCE OF 90 DEG 审中-公开
产生具有90度相位差的两个信号

GENERATING TWO SIGNALS HAVING A MUTUAL PHASE DIFFERENCE OF 90 DEG
Abstract:
A method and device are described for generating two output signals (I; Q) each substantially identical to a square-wave input signal (A) from a local oscillator (2), wherein the first output signal (I) may have a certain time shift with respect to the input signal (A), and wherein the second output signal (Q) is shifted over T1/4 [mod T1] with respect to the first output signal (I), T1 being the period of the input signal (A). To generate the first output signal (I), Fourier components (S1((1), S3((3), S5((5), S7((7), S9((9), S11((11) etc) of the input signal are combined. To generate the second output signal (Q), Fourier components (S1((1), S5((5), S9((9) etc) of the input signal are phase shifted over +90 DEG while Fourier components (S3((3), S7((7), S11((11) etc) of the input signal are phase shifted over -90 DEG , and the thus shifted Fourier components of the input signal are combined.
Abstract(Chinese):

描述了一种用于产生与本地振荡器（2）基本上与方波输入信号（A）相同的两个输出信号（I; Q）的方法和装置，其中第一输出信号（I）可以具有一定的时间 相对于输入信号（A）移位，并且其中第二输出信号（Q）相对于第一输出信号（I）在T1 / 4 [mod T1]上移位，T1是输入信号 一个）。 为了产生第一输出信号（I），傅立叶分量（S1（（1），S3（（3），S5（（5））S7（（7），S9（（9），S11（（11） 为了产生第二输出信号（Q），输入信号的傅立叶分量（S1（（1），S5（（5），S9（（9）等）在+90°以上相移 而傅立叶分量（S3（（3），S7（（7），S11（（11）等））相差90度以上，输入信号的傅里叶分量被组合。

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