The FB-1140SM from Marki Microwave is a Band Pass Filter with Frequency 10.45 to 12.35 GHz, Bandwidth 1.9 GHz, Center Frequency 11.4 GHz, Insertion Loss 2 to 3 dB, Rejection 35 to 50 dB. Tags: Surface Mount. More details for FB-1140SM can be seen below.