The ERZ-HPF-1750-4100-2.0 from ERZIA is a High Pass RF Filter with a passband from 17.5 to 41.0 GHz. It has an insertion loss of less than 2 dB and a return loss of 13 dB. The filter is based on the Suspended Substrate (SS) technology that allows high selectivity with sharp edges within an optimized physical space. It can also be developed with lumped elements or microstrips for more complex RF filtering applications.