基于DDS的模拟调制系统设计

DDS-based Design of Analog Modulation System

随着FPGA在速度和资源方面的快速发展,各种复杂的模拟调制信号也可以用数字化的形式实现。这与传统的模拟方法实现相比,各种调制信号数字化实现具有更多的灵活性、精确性、可控性,使其得到更广泛的应用。这里基于全数字化频率合成器(DDS)技术,用现场可编程门阵列(FPGA)、AD9755数字化实现调幅(AM)、线性调频(FM)、非线性FM调制。

With the rapid development of FPGA in resources and speed,various complex analog modulated signals could also be realized in digital form.Compared with the traditional analog realization,the digital realization of various modulated signals has more flexibility,accuracy,controllability,thus is more widely applied.Based on DDS technology,AM,linear FM,non-linear FM modulation in digital form could be realized with FPGA and AD9755.