The BWSBF-15/20-3 from Sainty-Tech Communications Limited is a Switched Filter Bank with Frequency 15 to 20 GHz, Band 1 15 to 16 GHz, Band 2 17 to 18 GHz, Band 3 19 to 20 GHz, Insertion Loss 11 dB. Tags: Die. More details for BWSBF-15/20-3 can be seen below.