This book approaches the antenna measurement tasks at millimeter wavelengths, with focus on a particular antenna measurement system: the compact range. Several techniques are described, covering analysis, design and assessment. The proposed methods follow the sequential steps involved in the tests of an antenna. First contributions cover the Electromagnetic analysis, proposing two hybrid formulations which offer complementary points of view about the range's study. These algorithms are used to reach design conclusions on the range's field collimator. Also, the assessment stage is studied at millimeter wavelengths, proposing quiet zone acquisition techniques which deal with well known features of this frequency band, such as large amount of data to be acquired and low dynamic range in the measurements. This work aims to offer reliable approaches, feasible beyond theory. Thoroughness and pragmatism are combined in a topic such as antenna measurements at millimeter wavelengths, for which nowadays serious bottleneck phenomena exist and compromise the antenna measurement practices at millimeter wavelengths.