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提出一种采用22nm FDSOI CMOS工艺的2×2天线阵列超紧凑10GS/s采样波束成形接收机前端。通过基于跟踪保持的真时延和被动电荷求和实现波束转向，消除了功耗高的求和放大器，在10.5GHz信号带宽内达到49.5dB SNDR和57.5dBc SFDR。
Abstract This work presents an ultra-compact 10GS/s sampled beamforming (BF) receiver front-end (FE) for a 2×2 antenna array, enabling both azimuth and elevation steering in 22nm FDSOI CMOS. The 4× time-interleaved FE features a 200ps range/14.3ps LSB true-time-delay employing a TaH-based BF with passive charge-based summation with 10.5GHz signal bandwidth, eliminating power-hungry summing amplifiers. The FE receiver achieves an SFDR/SNDR >57.5dBc/49.5dB with only 52mW/channel and a Schreier FOM of 153dB. Next-generation wireless communication links demand both high bandwidth and high throughput. Consequently, techniques leveraging high aggregated bandwidth, large-scale MIMO antenna arrays, and direct RF transceiver architectures are gaining importance to address the performance and energy-efficiency trade-off [1-5]. However, the limited signal bandwidth necessitates an increase in spectral efficiency and consequently in the signalto-noise ratio (SNR) to support the transmission of lar
Enne Wittenhagen, Dominik Wilding, Patrick Artz, Sebastian Linnhoff, Philipp Scholz, Friedel Gerfers
TU Berlin, Berlin, Germany