Dr. Lawrence P. Dunleavy
 Write for Microwaves & RF
2 results found for Dr. Lawrence P. Dunleavy, displaying items 1 - 2

January 2009   [Test & Measurement]
Program Calibrates VNAs For Lumped-Element Testing
Effective calibration is paramount to accurate vector network analyzer (VNA) measurements. Since the introduction of the VNA around 1970, a number of different calibration routines have been created for VNAs, based on the types of circuit standards used, such as short-openload- reflect (SOLR) to augment the classic short-open-load-thru (SOLT) calibrations. Both of these types of calibrations have a high dependence on the load model and this report...

July 2007   [Computer-Aided Engineering]
Understanding P2D Nonlinear Models
Measurement-based nonlinear amplifier models ideally predict the performance of a high-frequency amplifier as accurately as possible. A usable nonlinear behavioral model can project the performance of a design under different operating conditions, saving the time and expense of building an amplifier circuit for experimentation. Of course, detailed circuit models often require a transistor model, a package model, and models for the transmission lines, passive elements,...