This book examines the challenges of low-noise amplifier (LNA) research and design in the millimeter-wave regime by dissecting the common LNA configurations and typical specifications into parts, which are then optimized separately over several chapters to suggest improvements in the current designs. It provides extensive theoretical background information on both millimeter-wave operation and LNA operations, and then describes passive components that make these LNAs possible, as well as broadband configurations and optimization techniques. The book is intended for researchers, circuit designers and practicing engineers.