DocumentCode :
2918553
Title :
A Phase-Locked Loop reference spur modelling using Simulink
Author :
Kamal, Noorfazila ; Al-Sarawi, Said ; Weste, Neil H E ; Abbott, Derek
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Adelaide, Adelaide, SA, Australia
fYear :
2010
fDate :
11-14 April 2010
Firstpage :
279
Lastpage :
283
Abstract :
Phase-Locked Loops (PLLs) are a commonly used module in frequency synthesizers as part of RF transceivers. Simulating these modules is very time consuming. Therefore, a number of approaches to evaluate the performance of these modules through high level behavioural modelling are developed, where the focus is on the random noise aspect of these modules. In this paper, we introduce charge pump and Phase/Frequency Detector (PFD) non-idealities in the integer-N PLL behavioural model to estimate the periodic noise, which is also known as reference spurs. In addition, the effect of the VCO gain, loop filter order and loop bandwidth on the reference spurs level are taken into consideration. The proposed model was implemented in Simulink and showed less than ±3% error when compared to transistor level simulations from Cadence Spectre. Using this approach a 10 time improvement in simulation speed was achieved compared to transient analysis from Cadence Spectre.
Keywords :
frequency synthesizers; phase detectors; phase locked loops; transceivers; voltage-controlled oscillators; Cadence Spectre; RF transceivers; Simulink; VCO gain; charge pump; frequency synthesizers; integer-N PLL behavioural model; loop bandwidth; loop filter order; periodic noise; phase-frequency detector; phase-locked loop reference spur modelling; random noise aspect; transistor level simulations; Charge pumps; Frequency estimation; Frequency synthesizers; Noise level; Phase detection; Phase estimation; Phase frequency detector; Phase locked loops; Radio frequency; Transceivers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electronic Devices, Systems and Applications (ICEDSA), 2010 Intl Conf on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-6629-0
Type :
conf
DOI :
10.1109/ICEDSA.2010.5503058
Filename :
5503058
Link To Document :
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