0303848 - URE-Y 20010114 RIV SK eng C - Conference Paper (international conference)
Kroupa, Věnceslav František - Štursa, Jarmil
Spurious in PLL-DDS frequency synthesizers.
Košice: Mercury Smékal Publishing House, 2001. ISBN 80-89061-49-4. In: Proceedings DSP-MCOM 2001. - (Lukáč, R.; Galajda, P.; Marchevský, S.; Drutarovský, M.), s. 117-120
[Digital Signal Processing and Multimedia Communications DSP-MCOM 2001 /5./. Košice (SK), 27.11.2001-29.11.2001 (K)]
R&D Projects: GA ČR GA102/00/0958
Institutional research plan: CEZ:AV0Z2067918
Keywords : frequency synthesizers * phase locked loops * direct digital synthesis
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

We will discuss the basic parameters of the steering signal that is built in the sigma-delta modulator and that controls pulse removing in the PPL frequency synthesizer. The knowledge of these parameters is important for the choice of the bias of the steering signal and for the correct evaluation of the synthesizer spectrum. We shall investigate the dependence of these parameters on the order of the sigma-delta modulator and show the spurious phase spectrum of the considered fractional-N synthesizer for the third and fourth modulator order.
Permanent Link: http://hdl.handle.net/11104/0114032