DocumentCode
1855103
Title
Piece-wise parabolic interpolation for direct digital frequency synthesis
Author
Eltawil, Ahmed M. ; Daneshrad, Babak
Author_Institution
Electr. Eng. Dept., Univ. of California, Los Angeles, CA, USA
fYear
2002
fDate
2002
Firstpage
401
Lastpage
404
Abstract
In this paper, a compact architecture and implementation for direct digital frequency synthesis (DDFS) is presented. It uses a smaller lookup table for sinusoidal functions compared to existing architectures. The computation of the sinusoidal values is performed by a parabolic interpolation structure, thus only interpolation coefficients need to be stored in the read-only memory (ROM). The ROM size is consistently less than 1 Kbit for SFDR values up to 85 dBc.
Keywords
direct digital synthesis; interpolation; piecewise linear techniques; read-only storage; table lookup; DDFS; ROM size; SFDR values; direct digital frequency synthesis; lookup table; piece-wise parabolic interpolation; sinusoidal functions; Buildings; Clocks; Computer architecture; Equations; Filters; Frequency synthesizers; Interpolation; Laboratories; Read only memory; Table lookup;
fLanguage
English
Publisher
ieee
Conference_Titel
Custom Integrated Circuits Conference, 2002. Proceedings of the IEEE 2002
Print_ISBN
0-7803-7250-6
Type
conf
DOI
10.1109/CICC.2002.1012856
Filename
1012856
Link To Document