DOI: 10.1109/TMTT.2024.3354908   IEEEXplore: https://ieeexplore.ieee.org/document/10416887    

Ultralow noise figure broadband LNA in 65 nm CMOS

32-46 GHz

Three-winding input transformer in the LNA 1st stage with negative feedback matches the input impedance and improves bandwidth. Multi-array “large” transistor in the 1st stage overcomes the NFmin impact of the low Q of the input matching transformer. Pole tuning technique with series inductors in the 2nd stage improves both bandwidth and flatness.

Integration with phased antenna array designs for 5G and beyond.

2.2-3.2 dB noise figure from 32 to 46 GHz; 19.2-21.5 dB gain from 32-to 46 GHz; -7.6 dB third-order intercept (IIP3) at 38 GHz; 13.5 GHz effective bandwidth (BWeff) from 32 to 45.5 GHz. 22 mW power consumption at 1 V; 0.16 mm2 core size.