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Spread Spectrum Clock Generators for solving EMI | Cypress Semiconductor

Spread Spectrum Clock Generators for solving EMI

Last Updated: 
Mar 25, 2009

Benefits of Lexmark Modulation Waveform

The advantages of Lexmark's modulation waveform for EMI attenuation derive from its unique, patented shape, one embodiment of which is shown in Figure 1. In addition to the shape shown in Figure 1, other waveforms are covered by Lexmark patents (such as the triangular, or linear, waveform). A less efficient ‘sharkfin', or exponential, waveform as seen in Figure 2 is sometimes used.