This text provides design and analysis data on planar microwave transmission structures including microstrip lines, slotlines and coplanar waveguides. It offers comprehensive information on transmission structures used in hybrid and monolithic circuits at microwave and mm-wave frequencies. Included in this revised edition are: expanded and updated coverage of coplanar lines and finlines; design formulas and models on printed transmission lines and their discontinuities; data on microstrip elements and applications in mobile and wireless communications; and analytical techniques such as the Finite Element Method, the Transmission Line Matrix Method and the Segmentation and Boundary Element Method.