Two-Port Vector Network Analyzer Measurements Up to 508 GHz

We present new results for a two-port vector network analyzer swept-frequency test set for the 325-508 GHz frequency band. The calibrated dynamic range performance in the full frequency band is discussed. Using a line-reflect-line calibration procedure, the dynamic ranges for return and insertion losses of better than 20 and 35 dB, respectively, are achieved. We examine the performance of the calibrated test set for the first time by measuring S-parameters of passive waveguide components and comparing data with electromagnetic simulations.