Title :
A new initial guess for sine function dedicated to sine-output direct digital frequency synthesizers
Author :
Sodagar, Amir M. ; Lahiji, G.R.
Author_Institution :
Dept. of Electr. Eng., S. Rajaee Univ., Tehran, Iran
Abstract :
A new approach in sine amplitude approximation for sine-output direct digital frequency synthesizers “parabolic approximation” is presented. The proposed approximation provides an initial guess, which is very much closer to the target sine amplitude than previous approximations and can be simply implemented using full-digital circuitry
Keywords :
direct digital synthesis; table lookup; waveform generators; full-digital circuitry; initial guess; parabolic approximation; sine amplitude approximation; sine function; sine-output direct digital frequency synthesizers; Approximation error; Circuits; Clocks; Costs; Energy consumption; Frequency control; Frequency synthesizers; Hardware; Read only memory; Table lookup;
Conference_Titel :
Devices, Circuits and Systems, 2000. Proceedings of the 2000 Third IEEE International Caracas Conference on
Conference_Location :
Cancun
Print_ISBN :
0-7803-5766-3
DOI :
10.1109/ICCDCS.2000.869821
