A method of measuring negative impedance

A method of measuring the components of a negative impedance has been developed. The device considered possesses an S-type negative impedance as opposed to an N-type, the tunnel diode being an example of the latter. The method of measurement is illustrated by measurements taken on a negative impedance booster used for compensating the losses of a wire transmission line. The technique of measurement is fairly simple and the accuracy of measurement depends upon the grade of standard components used for comparison andpossibly also on the magnitudes of the negative impedance components to be measured. For values of a series positive resistance of 60¿ and a parallel circuit composed of a negative resistance of 160¿ and negative capacitance of 0.013 f¿F, measurements were possible with uncertainties not exceeding ±2.15%, ±0.75% and ±1.85% respectively using 1.0% grade capacitors and 0.1% grade decade resistors.