Speaker: Robert G. Olsen
“What can you do with and/or learn from an Impedance Analyzer?”
Abstract: This talk will explore how the complex impedance of real components behaves at higher frequencies, with a focus on the effect of lead length (with demonstrations). We will also examine the behavior of transmission lines and antennas, for which lengths are comparable to or larger than a wavelength. For these systems one can define impedances at various locations (e.g., “input impedance”). We will describe the accuracy and limitations of several analyzers. Finally, we will show how to determine 1) antenna bandwidth, 2) coax cable losses, and 3) the electrical length of a piece of cable.
About the Speaker: Robert earned his BS degree from Rutgers University and MS and Ph.D. degrees from the University of Colorado. An electrical engineering faculty member at Washington State University since 1973, Robert recently became professor emeritus. He has been an NSF Faculty Fellow at GTE Laboratories, a visiting scientist at ABB Corporate Research and at the Electric Power Research Institute (EPRI), and a Visiting Professor at the Technical University of Denmark. His research spans all aspects of electromagnetics issues in power transmission, resulting in 90 refereed journal and 150 conference publications. He is also one of the authors of the AC Transmission Line Reference Book – 200 kV and Above, published by EPRI. He is a Fellow of the IEEE and an Honorary Life member of the IEEE Electromagnetic Compatibility (EMC) Society. He is past US National Committee representative to the International Council on Large Electrical Systems (CIGRE) Study Committee 36 (Electromagnetic Compatibility), past chair of the IEEE Power Engineering Society AC Fields and Corona Effects Working Groups, past Associate Editor of the IEEE Transactions on EMC and Radio Science, and past Co-Technical Program Chair of EMC Zurich.