The DMBX-4G12G-19-8D5-SFF from Planar Monolithics Industries is a double balanced mixer that operates from 4 to 12 GHz (RF Frequency from 8900 to 9400 MHz, IF Frequency of 870 MHz). It has a low conversion loss of 8.5 dB, LO to RF isolation of 19 dB while maintaining a noise figure of less than 8.5 dB. The mixer can handle an input power of up to 200 mW. It is available in a module with field replacable SMA female connectors.