The SKY78191–11 from Skyworks is a Low Band Tx-Rx Front-End Module that operates from 703 to 748 MHz. It consists of a low-band 3G/4G block, low- and high-band 2G PA blocks, and integrated filters for Bands 8, 12, 20, and 26. This module contains four auxiliary 3G/4G Tx outputs to provide external filtering for harmonically related LB-MB downlink CA. It also consists of a silicon controller with MIPI RFFE 2.0 interfaces, RF band switches, antenna switches, and a bi-directional coupler. The module requires a DC supply of 1.8 V and contributes to an extremely low leakage current which maximizes device standby time.
The SKY78191-11 FEM is optimized for LTE Advanced which utilizes Carrier Aggregation for higher data rates. The combined filtering, RF matching, and TRx switching internal to the FEM optimize performance for popular Downlink (DL) CA band combinations, all in a compact and low-cost solution. The FEM contains necessary components between the antenna and RFIC transceiver and is optimized to provide superior Rx sensitivity and Tx efficiency.
This module is available in a 56-pad, MCM, low-profile SMT plastic package that measures 7.60 × 6.00 × 0.75 mm and the IC die and passive components are mounted on a multi-layer laminate substrate. It is suitable for use in multi-band 2G / 3G / 4G / 5G mobile devices, handsets, data cards, M2M, and LTE advanced carrier aggregation (CA) applications.
