Materials Measurement Phil Bartley Shelley Begley

Round Robin ResultsThis shows the results of a round robin we participated in. The MUT, unknown at the time ofmeasurement, was glass reinforced, ceramic composite. Agilent measured the material inx-band (8-12 GHz) and u-band (40-60 GHz) using a PNA based freepace system and GRLcalibration. It should be noted that all the other data come from single frequency andresonant techniques, which are considered to be more accurate than broadband free spacetechniques.Note at the low frequency end of the X- band Agilent measurements of the values tail up. Itis probable that this was caused by the sample holder being too small.The test data comes from the following various points:IPC TM-650 2.5.5.5. Strip line data at 10 GHz (first four harmonics. Fourth Harmonic is therecognized harmonic for reporting.Damaskos Model 900T Open Resonator Data (8.4 to 26 GHz) (D1 and D2)Damaskos Model 200 Circular Cavity Data (2.6 to 23 GHz) (D3)NIST Test using a Split Post < 10 GHzNIST Test using a Split Cylinder > 10 GHzAgilent 8507!E-100 GRL cal, X-band and U-Band71