Design And Realization Of Digital Frequency Synthesis System

Frequency synthesis technique is a very technically advanced circuit technology.It is widely used in radar,navigation,communications,space electronics and instruments,meters and other electronic systems.With the continuous expansion of the application field,the development of frequency synthesis technology is moving towards miniaturization,digital direction of rapid development.A high performance,miniaturization,digital frequency synthesizer is the core component of the electronic communication system.Developed countries mastering the technology and the production of the development of the signal source,spectrum analyzer,network analyzer,and other high-performance electronic systems,are still at a high price to China's domestic dumping.It also shows that the miniaturization digital development of frequency synthesis technology should be paid more attention to.Miniaturization digital frequency synthesis technology,in some special field,in the case of meeting the system indicators,has advantage in a small size,all digital,flexible and controllable,and other aspects.The traditional frequency synthesis method has a significant improvement,instead of the previous 3U,6U module,so that it can be more widely used in the field.In this thesis,based on the dual channel DDS chip waveform generation,HMC704 phase locked synthesis and hybrid frequency synthesis scheme and other techniques,the technology is breached in the field of missile borne,airborne frequency synthesis of small,all digital technology.The main research contents are as follows.First of all,this article introduces the basic concepts of frequency synthesizer.And,the key technical indicators,analysis of phase-locked loop(PLL)technology,direct digital synthesis(DDS)technology working principle,structure and direction,are given for the miniaturization of digital frequency synthesis design.Secondly,a missile borne frequency synthesizer is designed based on the theoretical analysis.It is proved that the design meets the requirements,stable and reliable operation of the system and it passes the test.To achieve the desired goal,the miniaturization of digital frequency synthesis design of the future has guiding significance.