Masashi Nogawa’s latest article examines how the output noise signal of RF or analog electronic components is affected by disturbances in their power supply rails, typically regulated by voltage regulator modules (VRMs). In semiconductor components, the power supply rails are connected to analog input and output ports. Consequently, any disturbance on these power rails can distort the RF or analog signals being processed. To quantify and systematically characterize this effect, the concept of power supply modulation ratio (PSMR) is often used. However, in this article, Masashi focuses on a more accessible approach, illustrating the influence of power supply variations through a series of simple and easy-to-visualize examples.
Read the Full Article on Signal Integrity Journal
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