RFFrontend
RF frontend refers to the portion of a radio receiver or transceiver that handles the initial processing of radio frequency signals before they are converted to baseband. It comprises the antenna interface, impedance matching networks, filtering, and the gain and conversion stages that condition the signal for downstream processing. The primary goals are to maximize sensitivity and selectivity, minimize interference, and protect subsequent stages from strong signals.
Typical components include the antenna, impedance matching networks, preselect filters, low-noise amplifiers (LNA), RF filters (such
Architectures vary. In a superheterodyne front end, the signal is amplified, filtered, and downconverted with a
Integration and modules. In mobile and compact devices, the RF frontend is often implemented as an RF
Design considerations include noise figure, gain and linearity (IP3), impedance matching, filter selectivity, LO leakage, image