A 3.6dB NF, 23-39GHz Reflectionless RX with Absorptive Amplifier and Dual-Path Noise Cancelling LNA Supporting 64-QAM/256-QAM/1024-QAM for 5G NR

Future multi-standard wireless provides high data-rates using the wideband millimeter-wave spectrum and high-order modulation, which requires the multi-function integrated receivers (RXs) providing high-quality signal channels within a wide operation band. However, in practical applications (e.g., 5G, vehicles, and intelligent manufacturing), the wideband RX operates in a complicated EM environment where the multiple in-band RF signals (i.e., desired signal, imaging signals, and blockers) are received by the RX. Meanwhile, the receiving signal along with the LO signal will generate unpredictable intermodulation in the non-linear device of RX. The imaging signal, blocker, and the intermodulation products located in the receiving channel degenerate the RX performance significantly, while recent researches show that imaging signal and blocker can be reduced by image rejection and blocker suppression techniques. Nevertheless, the suppression of in-band intermodulation remains great challenges.