The ECA22500P100D75A from ECHO Microwave is a Band Pass Filter with Frequency 22.45 to 22.55 GHz, Insertion Loss 2 dB, Rejection 75 dB @ DC to 20500MHz, Ripple 0.5 dB, Return Loss 16 dB. Tags: Cavity Filter. More details for ECA22500P100D75A can be seen below.