Highly linear 4.9–5.9 GHz WLAN front-end module based on SiGe BiCMOS and SOI

Summary form only given, as follows. A high linearity 4.9–5.9 GHz T/R front-end module (FEM) is presented. The FEM consists of a SiGe BiCMOS PA and a single-pole double-throw SOI switched LNA in a 3 × 3 × 0.6 mm QFN package. The Tx chain has 31 dB gain and meets 3% EVM up to 22 dBm with harmonic and out-of-band emissions compliant to regulatory limits. The receive chain features 2 dB NF and 14 dB gain with −3 dBm IP1dB for LNA mode and 5 dB attenuation in bypass mode with 10 dBm IP1dB. All these features simplify designs of complex WLAN/MIMO radios.