Modelling, Design, and Characterization Challenges of a Gallium Arsenide High-linearity Low-Noise Amplifier With Gain Control at W-band

Future 5G telecommunication system will require advanced circuit components operating above 100GHz. A critical component is the Low-Noise Amplifier (LNA) that should concurrently feature low noise figure, high gain, and high linearity. In this context, a demonstrator LNA is developed featuring typical $3.7 \mathrm{~dB}$ noise figure, $22 \mathrm{~dB}$ gain, +5 dBm output power at $1 \mathrm{~dB}$ compression in the 90 to 115GHz bandwidth using an industrial grade Gallium Arsenide 100-nm technology. Gain control functionality is also applied to allow operation in heavily congested EM scenarios. The concurrent noise-linearity performance is one of the best reported in the open literature above 100GHz.