О смысле всего сущего

ISSCC 2012 / SESSION 4 / RF TECHNIQUES / 4.1 4.1 A Blocker-Tolerant Wideband Noise-Cancelling Receiver with a 2dB Noise Figure David Murphy[1,2], Amr Hafez[1,2], Ahmad Mirzaei[2], Mohyee Mikhemar[2], Hooman Darabi[2], Mau-Chung Frank Chang[1], Asad Abidi[1] [1] University of California, Los Angeles, Los Angeles, CA [2] Broadcom, Irvine, CA As narrowband off-chip RF filtering is not compatible with the concept of software-defined radio (SDR), an SDR receiver must be designed to tolerate large out-of-band blockers with minimal gain compression and noise figure degradation. ..... In this work, we propose a hybrid frequencytranslational, noise-cancelling(FTNC) receiver that employs two separate downconversion paths to enable noise cancelling with no voltage gain prior to baseband filtering. The resulting design has a sub-2dB noise figure and tolerates 0dBm blockers with no gain back-off, breaking the traditional noise-linearity trade-off common in all receivers.