Low-power inductorless RF receiver front-end with IIP2 calibration through body bias control in 28nm UTBB FDSOI

A compact energy-efficient receiver front-end designed and implemented in 28nm UTBB FDSOI CMOS supports in-device coexistence of Bluetooth (BT) with an LTE FDD Band 7 transmitter module. The receiver is based on an inductorless low-IF current-mode LNTA-first architecture and features IIP2 calibration. IIP2 improvement is implemented through the body bias of the passive mixer switching pairs. The fabricated receiver has an active area of 0.12mm
²
, power consumption of 4.4mW, achieves IIP2 improvement of over 25dB through body bias tuning, NF of 8.6dB and gain of 26.7dB, all within BT specification.