PLLnoise_simulation[1] - ELEN 6901 ELEN 6901 PLL PLL Phase...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
LEN 6901 ELEN 6901 PLL Phase Noise/Jitter Modeling Chun-Wei Hsu Karthik Tripurari 2010/2/9 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Introduction of Phase Noise The oscillator output Vo with the phase noise Φ n ) sin( ) cos( ) cos( ) sin( ) sin( 0 0 0 n n n t w A t w A t w A Vo φ + = + = where A is the amplitude and w 0 is the frequency For small noise term n t w A t w A Vo ) cos( ) sin( 0 0 + 2 2010/2/9
Background image of page 2
Introduction of Phase Noise Phase perturbation from device noise includes white and flicker noise Power spectral density S Φ of phase noise Φ n Extracting noise parameters Single-sided PSD L(f) 3 2010/2/9 –L ( f)=(1/2)S Φ ( f) Lee, T.H.; Hajimiri, A., "Oscillator phase noise: a tutorial," Solid-State Circuits, IEEE Journal of , vol.35, no.3, pp.326-336, Mar 2000
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Impact of Phase Noise Phase Noise Reduce SNR of the signal Tx: Out-of band emission Rx: Reciprocal mixing 4 2010/2/9
Background image of page 4
Phase Jitter Jitter issues Sampling cases ¾ Degrade SNR of ADC/DAC Data recovery considerations ¾ Reduce the eye-opening ¾ Decrease BER Definition of phase jitter Difference between the measured time and the ideal bit period df S f sig jitter phase Φ = 2 _ 2 ) 2 1 ( π σ 5 2010/2/9
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
PLL Noise Modeling Phase domain model Simple and Linear model Sampling nature of PLL ignored Efficient for the noise analysis when the PLL is in locked state Voltage domain model A complete but complex model No quiescent operating points and only periodic operating points Describes phenomena like cycle slipping, false locking and lock capture 6 2010/2/9 Long simulation time
Background image of page 6
Phase Domain Model
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/08/2010 for the course EE elen6901 taught by Professor Chun-weihsu during the Spring '10 term at King Abdullah University of Science and Technology.

Page1 / 29

PLLnoise_simulation[1] - ELEN 6901 ELEN 6901 PLL PLL Phase...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online