SKY68020-11 LTE Universal Multi-Band FEM Skyworks Solutions SKY68020-11 is a hybrid multi-band multi-chip RF Front-End Module (FEM) that supports cellular LTE-M/NB-IoT (half-duplex system) transceiver platforms. This FEM integrates the entire RF front-end necessary for an LTE multi-band radio operating in low-band and mid-band frequencies. The SKY68020-11 also incorporates Rx low-pass filters, broadband PA with bias controller, Tx low-pass harmonic filter, antenna switch, and MIPI RF front-end controller.