The most comprehensive work on a number of practical numerical methods for analyzing passive structures in microwave and millimeter--wave integrated circuits. The introduction presents a brief comparison of the various numerical methods and how they may be integrated into computer--aided design programs, so the reader can make the appropriate choice. Chapters following present step--by--step, detailed descriptions of the methods, each chapter written by the utmost authority on the subject. Chapters provide illustrative examples and are written so that the reader can write his own computer program based on the numerical method described (some chapters include sample computer programs).