From stealth materials to dielectric substrates, microwave food products to biofuels, accurate characterization of their electromagnetic properties provide engineers with critical information needed for material and circuit design, modeling, new material research, health and safety, manufacturing, quality control, and more. Many measurement methods exist, but which to choose is often a mystery. My intent is to clear the air by providing an overview of measurement methods, with strengths, limitations and applications of each.
Say Phommakesone is Industry Application Engineer for Aerospace Defense and Government Components Supply Chain with Keysight Technologies in Santa Rosa, California. He has acquired over 36 years of RF, microwave and mmWave measurement experience while working for Hewlett-Packard, Agilent, and Keysight Technologies. He spent eight years in manufacturing support production test on network analyzers, sources and spectrum analyzers. He followed that with five years in electrical calibration standard lab. For the past 23 years, he has worked in customer support, sales, technical support, and product marketing. He has developed and presented training materials for internal and external customers on a wide variety of network analyzer measurement topics including materials characterization and antenna tests.