A Novel Design Approach for ROM-less Direct Digital Frequency Synthesizers Based on Polynomial Approximations

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作者
Chau, Yawgeng A.
Chen, Yao-Hua
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TM [电工技术]; TN [电子技术、通信技术];
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0808 ; 0809 ;
摘要
A new design principle of the ROM-less direct digital frequency synthesizer (DDFS) based on the polynomial approximation is proposed, where the spurious free dynamic range (SFDR) is used as a design criterion for the polynomial coefficients. The optimal SFDR is pursued, and is transformed into a Chebyshev minimax problem with constraints. Numerical examples are presented to illustrated the SFDR evaluations.
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页码:166 / 169
页数:4
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