A general experimental method to determine the properties of artificial media at centimetre wavelengths, applied to an array of parallel metallic plates

摘要

This paper describes measurements at centimetre wavelengths (8.0????????11.0cm) on a system representing a semi-infinite array of infinitely thin, perfectly conducting, metallic plates. The purpose is to illustrate a general experimental method of determining the properties of such artificial media. The parallel-plate system was chosen since, in addition to exhibiting the interface phenomena peculiar to artificial media, it is the only one for which a rigorous solution is known. The measurements were made using a parallel-strip transmission-line1 specially developed for the study of two-dimensional structures which are non-uniform transverse to the direction of propagation.