TSP #308 - Terahertz Material & Dielectric Characterization - EM Labs 330GHz Fabry-Perot Resonator

In this episode Shahriar takes a look at a terahertz characterization technique using a Fabry-Perot resonance chamber made by EM Labs: https://www.emlabs.jp/en/1-8-fpr.php The chamber is able to measure dielectric constant and loss tangent with remarkable accuracy and prevision, ideal for materials with tan δ (Df) of 0.01 or less. This tutorial and review video is organized as follows: 00:00 - Introductions 00:45 - Dielectric Constant theory, equations and practical importance 04:54 - Measurement techniques using S-Parameters and resonance chambers 08:16 - Fabry-Perot resonator techniques for accurate Dk & Df measurements 11:04 - THz measurement setup including Fabry-Perot resonator, Keysight Streamline VNA and VDI frequency extenders 13:36 - Design challenges and features of the EM Labs Fabry-Perot resonator 16:02 - Software setup, resonator calibration and preparations 19:22 - Preparing, aligning and measuring samples, organic PCB laminate and prepreg 23:19 - Measuring ultra-low loss materials in J-Band 24:21 - Analyzing anisotropic material properties as a function of orientation 26:27 - Concluding remarks Please consider supporting The Signal Path: https://www.TheSignalPath.com/Donate   / thesignalpath   Other links: https://www.TheSignalPath.com   / thesignalpath