VDI offers subharmonically-pumped mixers (SHM) and even-harmonic mixers (EHM) for a variety of down conversion applications between 75GHz and 1700 GHz. Our Sub-harmonic mixers ( LO = ½ RF frequency) have a waveguide LO input, are easy to use and ideally suited for mmWave & THz applications.  These mixers use only planar and/or integrated diodes and provide state-of-the-art performance. The subharmonically-pumped mixers have a separate LO waveguide flange and typically exhibit > 100 dB isolation of the LO at the RF port. The even-harmonic mixers have coaxial IF and LO ports.  Fundamental mixers (FM) are also available, but require an external waveguide diplexer to combine the RF and LO signals. Typical Mixers are limited to >16kHz IF, <16kHz operation is available upon request. Contact VDI today for additional information. Click on the model number in the table below for more information.