0303652 - URE-Y 20000030 RIV SK eng C - Conference Paper (international conference)
Štursa, Jarmil - Kroupa, Věnceslav František
Sine approximation in digital frequency synthesis.
Liptovský Mikuláš: Vojenská akadémia, 2000. ISBN 80-8040-125-X. In: Nové smery v spracovaní signálov V. - (Andráš, L.; Sabó, A.), s. 244-247
[Nové smery v spracovaní signálov /5./. Liptovský Mikuláš (SK), 24.05.2000-26.05.2000]
R&D Projects: GA ČR GA102/00/0958
Institutional research plan: CEZ:AV0Z2067918
Keywords : digital signal processing chips * frequency synthesizers
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

A new method of the sine look-up table compression in digital frequency synthesizer is investigated. The approximated sine value consists of a coarse and of a fine part. The first one provides a staircase function, the second one is based on a straight line with the prescribed slope and shift. Some results of the procedure are shown for 3 coarse approximations. The dependence of the maximum spurious spectral component on approximation parameters is given.
Permanent Link: http://hdl.handle.net/11104/0113840