The PE8652 from Pasternack is a mixer that has an RF frequency from 2 GHz to 18 GHz and an IF range from 2 GHz to 8 GHz. It has an RF to LO isolation of 20 dB, an LO to IF isolation of 18 dB and an LO power of 10 dBm. The mixer can handle up to 23 dBm of RF power and has a P1dB of 4 dBm. It is matched to 50 Ohms and is available with SMA Female connectors.