A reference for circuit design engineers and microwave engineers, this book covers the subject in a style that is useful to both. It uses a simple 2-D electromagnetic simulation procedure to provide basic knowledge and practical insight into quotidian problems of microstrip passive circuits applied to microwave systems and digital technologies. The author's approach follows a natural route starting from analysis of the test circuits, continuing with simulation and finishing with the measurement. At the end of the book some typical problems of signal integrity such as ringing and overshooting are stated and solved by using knowledge acquired though the book.