The ECA2228P14D50AQ from ECHO Microwave is a Band Pass Filter with Frequency 2.22 to 2.24 GHz, Insertion Loss 1.7 dB, Rejection 50 dB @ fe(Bandedges), Ripple 0.8 dB, Return Loss 18 dB. Tags: Cavity Filter. More details for ECA2228P14D50AQ can be seen below.