The SKY78185-11/21 from Skyworks Solutions are Front-End Modules that are designed for multimode, multiband 2G/3G/4G mobile devices. They consist of a low-band 3G/4G PA block, low- and high-band 2G PA blocks, a silicon controller containing the MIPI RFFE interface, RF band switches, antenna switches, a bi-directional coupler, and integrated filters. These modules have four auxiliary 3G/4G Tx outputs for external filters and four auxiliary 3G/4G TRx ports to support additional bands. They have extremely low leakage current maximizes device standby time. The FEMs support WCDMA and HSPA+ bands for 3G and FDD/TDD LTE for 4G.
The SKY78185-11/21 are optimized for LTE Advanced which utilizes Carrier Aggregation for higher data rates. The combined filtering, RF matching, and TRx switching internal to the module optimize performance for popular Downlink (DL) CA band combinations. They contain all necessary components between the antenna and RFIC transceiver and are optimized to provide exceptional Rx sensitivity and Tx efficiency. The IC die and passive components are mounted on a multi-layer laminate substrate. These FEMs are available in surface-mount 56-pad LGA SMT packages that measure 7.60 x 6.00 x 0.75 mm and are ideal for multiband 2G/3G/4G mobile devices, handsets, data cards, M2M and LTE Advanced Carrier Aggregation (CA) applications.