THE TRANSMISSION-LINE MODELS - PAST, PRESENT, AND FUTURE (INVITED REVIEW ARTICLE)

In this article, an overview will be given on the continuous improveme nt of the transmission line models, one of the different types or mode ls used to analyze microstrip antenna structures. Starting from 1974, the year in which the simplest possible variant was introduced, the di fferent improvements will be discussed briefly from a pragmatic point of view. More time will be devoted to a state-of-the-art transmission line model. The last part of this review article will take a look into the future and try to guess which improvements and generalizations ca n (and maybe have to) be implemented to obtain a model able to compete with sophisticated integral equation models running on ever faster an d faster computers. (C) 1993 John Wiley & Sons, Inc.