This Book is intended as an Introductory text on Microwave Circuits, Devices and transmission line. It Contains Comprehensive up to date problems and solutions for a standard level on Transmission Lines, Optical Fiber Communication, TE modes, Rectangular waveguide, Cylindrical waveguide Microstrip, and Microstrip components such as Capacitance, Inductance, Short/Open stub, Transformer, Resonator and their Applications.