The HPF-3000-18000-SS11 from CotsRF is a Highpass Filter (HPF) with a passband from 3 to 18 GHz. It has a passband insertion loss of 1.5 dB and provides a rejection of more than 30 dB in the stopband. This HPF is available in a module that measures 0.50 x 1.15 x 1.62 inches with SMA-female connectors.