The MFBB-00002CH from Marki Microwave is a Band Pass Filter with Frequency 20.25 to 23.25 GHz, Center Frequency 21750 MHz, Insertion Loss 1.58 to 1.6 dB, Upper Rejection 30 to 67 dB, Lower Rejection 40 to 82 dB. Tags: Die, MMIC Filter. More details for MFBB-00002CH can be seen below.