The AE18000SSH6613 from Anatech Electronics is a RF High Pass Filter with Frequency 18 to 28 GHz, Insertion Loss 1 to 2 dB, Power 15 W, Rejection 50 dB@DC-15 GHz, VSWR 1.80:1. Tags: Module with Connectors, Suspended Substrate Filter. More details for AE18000SSH6613 can be seen below.