Andrey D. Grigorev 
Microwave Theory and Techniques [PDF ebook] 

This book describes the main principles of microwave circuit theory. It considers transfer from differential values, electric and magnetic fields, used in electromagnetics analysis, as well as voltage and current, used in the analysis of circuits. It explores scattering, admittance, impedance and transmission matrices in detail, as well as the coupling between matrices and network properties. The book also considers the analysis methods of complex microwave networks, based on the decomposition approach, paying special attention to their functionality and construction through numerous diagrams.