Found 6 alternatives for B38791W1155W310 by Qualcomm (RF front-end (RFFE) filters). Rf Multiplexers — -.
RF DIPLEXER 1.575GHZ/2.45GHZ
DP05A5250TTR/500
DP05A1920TTR/500
DP05A1940TTR/500
DP05B5425TTR/500
RF DIPLEXER 2.4GHZ/5GHZ ISM