DETERMINATION OF THE CHARACTERISTIC IMPEDANCE OF UNIFORM TRANSMISSION LINES

In order to conduct the investigation of small discontinuities in transmission lines of various cross sections it is necessary to know the characteristic impedances of such lines. A number of experimental methods of determining the characteristic impedances of transmission lines of arbitrary cross section were considered and are described in this report. At the same time, the literature was surveyed for analytical methods, a number of which were found for slab line and various forms of strip type transmission lines. These are listed in the References. As a check, several different slab line impedances were determined by the experimental methods and compared to a calculated curve.