A new approach to design a ROM-less direct digital frequency synthesizer (DDFS) is presented. An optimized polynomial interpolation technique has been used to achieve a 60 dBc or 80 dBc spurious-free dynamic range. Also, in the paper a new technique for designing efficient circuits for the evaluation of polynomial functions is presented. The new DDFS compares favorably with state of the art DDFSs designed using the CORDIC algorithm.
ROM-less Direct Digital Frequency Synthesizers exploiting Polynomial Approximation / DE CARO, Davide; Napoli, Ettore; Strollo, ANTONIO GIUSEPPE MARIA. - 2:(2002), pp. 481-484. (Intervento presentato al convegno ICECS 2002 tenutosi a Dubrovnik, Croatia nel 15-18 Sept. 2002) [10.1109/ICECS.2002.1046202].
ROM-less Direct Digital Frequency Synthesizers exploiting Polynomial Approximation
DE CARO, Davide;NAPOLI, ETTORE;STROLLO, ANTONIO GIUSEPPE MARIA
2002
Abstract
A new approach to design a ROM-less direct digital frequency synthesizer (DDFS) is presented. An optimized polynomial interpolation technique has been used to achieve a 60 dBc or 80 dBc spurious-free dynamic range. Also, in the paper a new technique for designing efficient circuits for the evaluation of polynomial functions is presented. The new DDFS compares favorably with state of the art DDFSs designed using the CORDIC algorithm.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
