balanis antenna theory a review

Thispaper is a tutorial on the theory of antennas, and it has been
written as an introduction for the nonspecialist and as a review for
the expert. The paper traces the history of antennas and some of
the most basic radiating elements, demonstrates the fundamental
principles of antenna radiation, reviews Maxwell’s equations and
electromagnetic boundary conditions, and outlines basic procedures
and equations of radiation. Modeling of antenna source
excitation is illustrated, and antenna parameters and fisures-ofmerit
are reviewed. Finally, theorems, arraying principles, and
advanced asymptotic methods for antenna analysis and design are