Measurement Results of a Six-Port Round Robin

The results of a Round Robin experiment measuring S21, S11, and S22 parameters on 10 db and 40 db attenuators using their DoD six-port systems was presented. The measurements were performed on the NBS experimental diode six-port system, the Sandia National Laboratories Six-port, and the DoD Primary Standards Laboratories Army (Redstowe Arsenal), Navy (Western Standards Laboratories, San Diego, CA.) and the Air Force (Newark AFB) six-port systems that were built by NBS. The agreement between the laboratories and the demonstrated stability of the six-port systems was encouraging for the Metrology Community.