The equivalent source mismatch (GG) of a 1.85 mm coaxial power splitter was characterized using two statistical measurement techniques. The first technique, originally described by Juroshek in reference , uses a modified one-port calibration method to determine GG. The second method uses two-port measurements of the splitter with one of the ports loaded with a series of calibration standards. This second, 'indirect' method provides measurements of S-parameters for the three-port device that can subsequently be used to calculate GG. Measurements of GG made with the two techniques are in good agreement. This demonstrates that the value of GG of a splitter can be determined using statistical measurement techniques, thus providing the possibility of exploiting redundant measurements to reduce the effect of random measurement errors. Analysis of repeated measurements of GG shows that the effect of random measurement errors is lower for the indirect method than the Juroshek method.
Proceedings Title: 72nd Automatic Radio Frequency Technology Group (ARFTG) Microwave Measurement Symposium
Conference Dates: December 9-12, 2008
Conference Location: Portland, OR
Pub Type: Conferences
broadband measurements, calibration, microwave power splitters, equivalent source mismatch