The AD2522-2642D337 from Anatech Electronics is a RF Duplexer with Frequency 2500 to 2445 MHz / 2620 to 2665 MHz, Band 1 2500 to 2445 MHz, Band 2 2620 to 2665 MHz, Insertion Loss 1 dB, Isolation 7 to 100 dB. Tags: Module with Connectors. More details for AD2522-2642D337 can be seen below.