A 22-nm CMOS 3.5-7.2 GHz Wideband FEM with a Balanced-Power-Combining DPA and a Dual-Resonant Input Matching LNA

This paper presents a 3.5-7.2 GHz wideband FEM implemented in 22-nm CMOS technology, integrating a DPA and an LNA. The DPA utilizes a 4-way balanced-power-combining network with electrical coupling compensation. To improve efficiency and linearity, an AM-PM distortion-canceling power cell is also developed. The LNA employs a dual-resonant input matching approach to achieve wideband input impedance and noise matching. The DPA achieves a peak output power of 30.08 dBm with a drain efficiency of 43.31\% at 6 GHz. For a 40 MHz 256-QAM signal, the average output power is 19.09, 21.07 and 17.18 dBm at 4.5, 6, and 7.2 GHz. For a 20 MHz 1024-QAM signal, the Pavg is 16.7, 18.25 and 17.55 dBm at 4.5, 6 and 7.2 GHz. The LNA achieves a peak S21 of 18.8 dB at 6 GHz, with a noise figure of 1.7 dB and S11 and S22 below -10 dB over 3.5-7.2 GHz.