Lect21_Phase Noise I

Lect21_Phase Noise I - ECE 620 Introduction to RF...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
ECE 620 Introduction to RF Integrated Circuits Prof. Waleed Khalil Lecture Phase Noise I 21 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
Outline Phase Noise vs. Jitter Phase Noise Definition 2
Background image of page 2
It's All in The Timing Timing represents the no. 1 challenge to today’s wireless or wireline systems In both Digital or Analog ICs, Phase-locked loops (PLLs) remain to be the focal point PLLs implement a variety of timing related functions, such as frequency synthesis and clock/data recovery In general, any jitter or phase noise in the output of the PLL results in degradation of system performance and therefore is of great concern to both system and circuit designers Increased impact of phase noise/clock jitter on system performance as process technology scales down and system performance (i.e. bandwidth (BW), frequency, modulation) scales up 3
Background image of page 3

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

View Full DocumentRight Arrow Icon
Phase Noise & Jitter Phase noise (PN) Commonly used in RF systems to represent frequency or phase inaccuracy Represent power-spectral-density (PSD) of frequency or phase inaccuracy Jitter Refers to sampling timing error or clock edge uncertainty in digital or analog systems Time domain measure From measurement stand point, PN remains to be the most accurate way
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/21/2011 for the course ECE 620 taught by Professor Khalil during the Fall '11 term at Ohio State.

Page1 / 12

Lect21_Phase Noise I - ECE 620 Introduction to RF...

This preview shows document pages 1 - 5. Sign up to view the full document.

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