The AM3100B1146 from Anatech Electronics is a Band Pass Filter with Frequency 3.05 to 3.15 GHz, Bandwidth 100 MHz, Center Frequency 3100 MHz, Insertion Loss 3 dB, Rejection 45 to 50 dB. Tags: Surface Mount, Ceramic, Ceramic Filter. More details for AM3100B1146 can be seen below.