The BWSBF-20/40-3 from Sainty-Tech Communications Limited is a Switched Filter Bank with Frequency 19.5 to 40.5 GHz, Band 1 19.5 to 20.5GHz, Band 2 27.5 to 28.5 GHz, Band 3 39.5 to 40.5 GHz, Insertion Loss 9 to 10 dB. Tags: Die. More details for BWSBF-20/40-3 can be seen below.