Title :
Direct digital frequency synthesis with dual-slope approach
Author :
Strollo, A.G.M. ; De Caro, D. ; Napoli, E. ; Petra, N.
Author_Institution :
Dept. of Electron. & Telecommun. Eng., Univ. of Naples Federico II, Italy
Abstract :
A new technique for phase to sine mapping in direct digital frequency synthesizers (DDFSs) is presented. With respect to previously proposed piecewise linear Taylor and Chebyshev approaches, novel technique reduces either ROM size or arithmetic hardware complexity, without decreasing accuracy. Simulation results for a 0.35/spl mu/m technology show a substantial increase in performances with respect to Taylor and Chebyshev DDFSs.
Keywords :
Chebyshev approximation; direct digital synthesis; piecewise linear techniques; read-only storage; 0.35 microns; DDFS; ROM size reduction; arithmetic hardware complexity; direct digital frequency synthesis; dual-slope approach; phase-to-sine mapping; piecewise linear Chebyshev; piecewise linear Taylor; Chebyshev approximation; Frequency control; Frequency synthesizers; Hardware; Piecewise linear approximation; Piecewise linear techniques; Polynomials; Read only memory; Signal generators; Taylor series;
Conference_Titel :
Solid-State Circuits Conference, 2003. ESSCIRC '03. Proceedings of the 29th European
Conference_Location :
Estoril, Portugal
Print_ISBN :
0-7803-7995-0
DOI :
10.1109/ESSCIRC.2003.1257156
