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A direct digital synthesizer of frequency with phase quantization in the system of residual classes

A. A. Bazhenov, L. A. Ovcharenko

Abstract


The paper considers principles of design and functioning of a direct digital synthesizer of frequency in the system of residual classes. In order to lower the level of spurious components in the output signal, the synthesizer has a decreased number of controlled phase-shifters, which is possible due to quantization of instantaneous phase of the synthesized harmonic oscillation. The paper includes a description of phase quantization in the code of the system of residual classes. The spectra of synthesizers with and without phase quantization are compared.

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References


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OVCHARENKO, L.A.; BAZHENOV, A.A. [Spektralnye harakteristiki priamogo tcifrovogo sintezatora chastoty v sisteme ostatochnykh classov]. Radioelectron. Commun. Syst., v.46, n.9, p.53-60, 2003.

SHAPIRO, D.N.; PAIN, A.A. Theoretical Foundations of Frequency Synthesis [in Russian]. Moscow: Radio i Svyaz’, 1981.

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GOL’DENBERG, L.M.; MATYUSHKIN, B.D.; POLYAK, M.N. Signal Digital Processing (A Handbook) [in Russian]. Moscow: Radio i Svyaz’, 1985.




DOI: https://doi.org/10.3103/S0735272705090086

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