Coupled Lines, Multiport Measurements, and Orthogonal CalibrationsThis project explores multiconductor transmission line theory and measurement methods. The project has developed a new understanding of lossy multiconductor transmission lines and modal cross powers. These theoretical developments in coupled line theory have led to accurate measurement methods for characterizing lossy asymmetric coupled lines. This project has also developed software for performing orthogonal two-port, three-port, and four-port calibrations. Most important, the data can be corrected with any in-line calibration and standards, including the multiline TRL algorithm! No bends are required and the number of connections to the standards is kept to an absolute minimum. The procedure corrects for all imperfect system impedances. The resulting measurements are fully calibrated to on-wafer or other transmission line reference planes. The method only requires the addition of an inexpensive switching network to a two-port vector network analyzer. The measurements can be expressed as normal or differential scattering parameters or as normal or differential impedance parameters.
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Related Links: High Speed Electronics Related Programs and Projects: High Speed Measurement On-Wafer Measurement Metrology Metrology for Electronic Packaging Contact
Dylan Williams 325 Broadway |