The TECH EDGE Series is a new generation of handbooks designed for the general electronic community covering a variety of topics & applications. Each book is narrow in scope, yet packed to provide the latest in technological developments &/or solutions to today's engineering problems. Approximately 125 pages of text, illustrations, tables & figures. TECH EDGE books can be bought either individually, as a series, or at group discounts. The first installment of the TECH EDGE Series is a six-book set on RF & Microwaves. Presenting theory while stressing practical aspects & design examples, each book treats pertinent interface problems that most other publications are not concerned with. Nearly 700 pages of text, graphs, figures & tables make up this complete series. Sophisticated systems (radar, electronic warfare, satellites) employ phased-array antennas & as such a number of phase shifters that usually are PIN diodes or ferrite elements. These devices are discussed with emphasis on their switching capabilities, driving requirements & their interfacing between DC & RF circuitry used in these systems. Design techniques & their relation to costs to the system are also provided.