Generation of Linear Frequency Modulation Signal Based on DDS
Xianzhi Zhang · Modern Electronics Technique · 2008
DDS is a new technology which advanced theory and method of digital processing into frequency synthesis.VHDL is a kind of hardware description language,it is used to describe the function of circuit hardware,the connection relationship of signal and the timing relationship.So,it is applied broadly in the field of electron engineering.The fundamental and modulation characteristics of DDS are introduced.Besides,DDS is implemented by programming in VHDL language.A sort of linear FM signal based on DDS technology is implemented.Then,simulation result of the main part of them is given,and its correctness is verificated.