Loeb, H. W.2017-08-182017-08-181969-01http://dspace.lib.cranfield.ac.uk/handle/1826/12338The principles underlying two distinct approaches to the measurement of electrical network characteristics over a wide frequency range are outlined, together with brief descriptions of currently available test systems which cover the range 0.1 - 4GHZ. The two techniques are assessed in terms of their ultimate capabilities with regard to accuracy, speed of measurement and costs.enReport