Phase-Digital Frequency Synthesizer Implementation With High Dynamic and Spectral Characteristics

The most important characteristics of frequency synthesizers (FS) are the speed, the spectral purity of the signal and the frequency resolution. Obviously, they should be at a sufficiently high level to provide the appropriate characteristics of telecommunication and measuring equipment. There are many options for building MFs: direct digital synthesizers (DDS), fractional PLL synthesizers or various combinations of these structures .