DIRECT DIGITAL SYNTHESIZER FOR RADIO COMMUNICA TION SYSTEMS WITH A SPREAD SPECRUM

摘要

The article considers methods of signal spectrum spreading, which served the basis for creating a new block diagram of the direct digital synthesizer of frequency-modulated signals. The offered structure of DDS has the increased operation speed and it allows forming multiple frequency frequency-modulated signals. The direct digital synthesizer is created for the synthesis of signals with frequency modulation and it can be used in radiolocation, navigation and adaptive broadband communication systems with a spread spectrum.