This eBook offers a comprehensive overview of the challenges, techniques and solutions for OTA measurements in the mmWave frequency range. The first article is a tutorial on the basics of OTA testing for 5G NR mmWave radios, likely the single most significant contributor to the scale and growth of the mmWave market. The following two articles look at semiconductors in the sub-THz and THz bands that overlap or are adjacent to the mmWave band. The first describes measurement setups and techniques for on-wafer testing. The second of these two articles describes generating signals and measuring devices in the “THz gap” of 100 GHz to 1 THz, where signals transition from electrical to optical. The fourth article in the eBook is an application note that amplifies this theme with the motivation, test setups and test methods for mmWave signal generation and analysis. The fifth article introduces techniques for designing and optimizing a compact antenna range (CATR) for the best OTA temperature tests. The seventh article proposes a test system containing multiple CATRs to enable OTA measurement of multiple angles of arrival. The sixth article and the final article are also application notes. The sixth article presents an overview of how to calculate a link budget for an OTA system and the final article presents an overview of the fundamentals of OTA power measurements.
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