The D7128 is a high-power，high-efficiency quad-band Tx and dual-band Rx front end module. The module is a self-contained 6.63mm×5.24mm module with 50Ω input and output terminals. The module consists of quad-band power amplifiers and dual-band antenna switch. The module is designed for use as the final portion of the transmitter section in a GSM850, EGSM900, DCS1800 and PCS1900 handheld digital cellular equipment and other applications in the 824 to 849MHz,880MHz to 915MHz, 1710MHz to 1785MHz and 1880 to 1910MHz bands and eliminates the need for antenna switch and matching network. The D7128 requires no external routing or external components, simplifying layout and reducing board space.