QPF4291 2.4GHz Wi-Fi® 6 Front End Module Qorvo QPF4291 2.4GHz Wi-Fi® 6 Front End Module (FEM) features a 2.402GHz to 2.482GHz frequency range, up to 30dB transmit gain, and a low 2.0dB noise figure. The QPF4291 is designed for IEEE 802.11ax systems which allow the operation of two separate RF chains to flow through a single Front End Module. The compact form factor and integrated matching minimizes layout area in the application and greatly reduces the number of external components.