The SKY78021, SkyOne™ is a hybrid, multimode, multiband (MMMB) FEM that supports 2.5G, 3G/4G, and CDMA handsets and operates efficiently in GSM, GPRS, EDGE, WCDMA, HSPA, and LTE modes. The FEM consists of an integrated GSM800/EGSM900 PA block, a DCS1800/PCS1900 PA block, separate WCDMA blocks operating in the low and high bands, a logic control block for multiple power control levels, and band enable functions in both cellular and UMTS. It is internally matched to 50 Ohms thereby minimizing the need for external components. The SKY78021 is available in a a multi-layer laminate substrate with the assembly encapsulated in plastic overmold.
The receiver of the SKY78021 consists of integrated Duplexers, RX SAWs, and a split LB (SP8T) / HB (SP10T) SOI switch support simultaneous Downlink Carrier Aggregation for additional Rx data rate, and provides 2G/3G/4G Rx paths from antenna to LNA port of RFIC.