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本文提出了一种针对5G NR应用的抗阻塞接收机，采用三阶滤波技术解决了窄频率间隔下-15dBm连续波阻塞带来的线性度挑战，实现了3dB噪声系数和160MHz射频带宽。
imposed several challenges in the design of sub-6GHz receivers (RX). Firstly, the maximum channel bandwidth (2BW) increases to 100MHz, while a -15dBm continuous-wave (CW) blocker can be located only Δf=85MHz away from the desired band edge. Such a small Δf/BW (~2) places a stringent linearity requirement on an RX, thus demanding the use of higher-order filtering. Secondly, in-band (IB) linearity also becomes critical, since the band of interest may contain many signals resulting from carrier aggregation and digital beamforming operation. Finally, a sub-3dB noise figure (NF) is required to achieve the highest possible link budget, which allows to maximize the spectral efficiency and data rate. Mixer-first architectures are traditionally considered as appealing candidates for 5G RXs
Mohammad Ali Montazerolghaem1, Sergio Pires2, Leo C.N. de Vreede1, Masoud Babaie1
Delft University of Technology, Delft, The Netherlands Ampleon, Nijmegen, The Netherlands 1 2 The introduction of the fifth-generation (5G) New Radio (NR) standard has