Electronic Design

What’s the Difference Between Power Density and Power Spectral Density?

Defining laser-beam power density. Power spectral density (PSD) is the measure of a signal's power content versus frequency. PSD gives designers an idea of how the power of a signal is distributed ...
AZOM

Power Spectral Density: Understanding Surfaces at Different Scales

The concept of Power Spectral Density (PSD) is extremely beneficial when specifying optics of various types, with PSD proving to be a useful metric in laser fusion and other extreme application spaces ...
EDN

Mobile WiMAX PHY: Transmitter Power, Spectral Flatness, Spurious Emissions, and ACP

Editor's Note: This is a multi-part excerpt from Agilent Technologies' Application Note: Mobile WiMAX PHY Layer (RF) Operation and Measurement. Part 1 of this article introduces the WiMAX standard and ...
Fabbaloo

Spectral Extrapolation Boosts LPBF Surface Characterization

A research team proposes spectral extrapolation to recover determine surface roughness metrics on laser powder bed fusion parts from limited measurements, promising faster quality assurance for AM ...
Electronic Design

What’s the Difference Between Power Density and Power Spectral Density? (Download)

The basic definition of power density is the rated (or nominal) output power of a device divided by the volume (volume = x · y · z) occupied by the device. Common units of measurement for power ...