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本文介绍了一种通过粗、精两级延迟实现总时延补偿的新的数字延迟补偿方法,基本特点是采用一个ROM控制两级采样-保持电路的采样时间实现精延补偿,采用一个ROM,一个加法器和一个RAM实现粗延补偿,提供了应用该补偿方法的一种实施方案,并进行了模拟实验。使用本方法,可以在低采样速率下实现高精度延迟补偿,同时它还具有体积小,成本低,使用方便,改变灵活,稳定可靠等优点,可适用于各种基阵。
In this paper, a new digital delay compensation method is introduced to realize the total delay compensation by coarse and fine delay. The basic characteristic of the method is that a ROM is used to control the sampling time of the two-stage sample-and-hold circuit to achieve the fine compensation. A ROM, An adder and a RAM provide coarse compensation, providing an implementation of the compensation method and simulations. The method can realize high-precision delay compensation under the low sampling rate, and has the advantages of small size, low cost, convenient use, flexible change, stable and reliable and the like, and is applicable to various kinds of arrays.