Summary
International Symposium on Antennas and Propagation
2005
Session Number:3E2
Session:
Number:3E2-3
Effect of Differential Signal Skew on the Common-Mode Emissions in a Differential Signals
Jong-Byung Lee, Jae-Hyun Lee,
pp.-
Publication Date:2005/11/3
Online ISSN:2188-5079
Summary:
The effect of delay skew of differential signal imbalance on trapezoidal waveform is investigated. Delay skew of a differential signal creates imbalance that results in a common-mode voltage. Closed-form expressions for the common-mode voltage are derived in both the time domain and the frequency domain. The simulation results show that a small amount of signal skew results in a series of common-mode voltage pulses. For a clock signal with a 50% duty cycle, delay skew creates a common-mode pulse train whose energy is primarily at the odd-harmonic frequencies.