... Small finile arrays are solved via equations over the modes and elements. This work is one of the first using multimode spectral analysis. The aim of the book is to create a mathematical tool for analyzing and calculating a wide range of PAAs and also studying ... ..., but also provide the corresponding technique of analysis and synthesis necessary for the rational development of expensive antennas. The book particularly deals with the analysis of a uniform planar antenna array consisting of the open ends of waveguides ...