The SIM-U742MH+ from Mini-Circuits is a high-performance mixer that uses LTCC, semiconductor technology, and patented circuit techniques to achieve high-frequency low-loss up conversion for instrumentation and military applications. It is based on a combination of low-temperature-co-fired-ceramic (LTCC) technology, semiconductor technology, and a highly manufacturable circuit layout. This application note discusses the features and capabilities of the high-performance mixer, and how it is designed for the best instrumentation and transmitter performance.