Kroupa, Věnceslav František (URE-Y) Štursa, Jarmil (URE-Y)
Issue data
Brno: Institute of Radio Electronics University of Technology, 2001
ISBN
80-214-1861-3
Source Title
Radioelektronika 2001. Conference Proceedings / Svačina J. ; Kolka Z.
Pages
s. 90-93
Number of pages
4 s.
Action
Radioelektronika'2001 /11./
Event type
K - Konference
Event date
10.05.2001-11.05.2001
VEvent location
Brno
Country
CZ - Czech Republic
Event type
EUR
Language
eng - English
Country
CZ - Czech Republic
Keywords
phase locked loops ; frequency synthesizers
Subject RIV
JA - Electronics ; Optoelectronics, Electrical Engineering
R&D Projects
GA102/00/0958 GA ČR - Czech Science Foundation (CSF)
CEZ
AV0Z2067918 - URE-Y
Annotation
The spectral properties of the PLL frequency synthesizer operating in the fractional-N mode are investigated. This operation is based on the swallowing of pulses in the feedback path of the PLL. The pulse swallower is controlled by the steering signal which is generated by the network DDFS operating as a ä-delta modulator of a given order. The influence of the modulator order on phase spectrum of the steering signal is shown.
