Description

The items used for the
comparison exercise 

This exercise compared measurements of VSWR in 50 ohm coaxial line for items with type―N connectors, from 1 GHz to 18 GHz in 1 GHz steps. There were six participants in the comparison exercise, which ran from July 1993 to December 1993.

Six items were used for the exercise - three male and three female - of nominal VSWRs 1.05, 1.2 and 1.5. (These items have since been measured at RF, 100 kHz to 1 GHz, in ANAMET Measurement Comparison 951.)

The comparison proved particularly useful to one participant who was able to use the results of the exercise to identify, isolate, and subsequently remove, a previously undetected fault with their measurement system.

Reference

N M Ridler and G D Jones, "Comparison assesses the quality of network measurements", Microwaves & RF, Vol 34, No 1, January 1995

N M Ridler and G D Jones, "ANAMET comparison of type-N VSWR measurements", 20th Automated RF and Microwave Measurements Society (ARMMS) conference digest, University of Nottingham, March 1994

Copies of these references are available from anamet@npl.co.uk

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