Balanced harmonic mixers are GaAs beam lead Schottky diode-based mixers. The harmonic mixers employ a broadband circuitry and balanced structure to offer low conversion loss and continuous frequency coverage for up to full waveguide band operations. These harmonic mixers are used to extend the frequency of spectrum analyzers and frequency counters. Unlike waveguide harmonic mixers (STH series), these mixers possess an internally integrated frequency diplexer so that the RF, LO and IF ports are configured separately. This feature allows for a convenient connection when used with spectrum analyzer models that do not have built-in diplexers, such as the models offered by Keysight (Agilent) Technologies. The below offering covers the frequency range of 26.5 to 140 GHz and is specially designed and manufactured for Keysight equipment.