Ka-Band Compact Scalar Network Analyzer Dedicated to Resonator-Based Measurements of Material Properties

The paper describes two test setups allowing one to measure over the Ka-band the scalar transmission coefficient of a state-of-the-art high-Q Fabry-Pérot open resonators that are often used for measurement of properties of low-loss materials. Both setups described herein employ readily-available components. Their performance is verified against measurements performed using a laboratory-grade vector network analyzer for two exemplary material samples and agreement is found, which demonstrates that an effective Ka-band material properties measurement system can be realized also without high-end laboratory equipment.