A 6–18 GHz bulk CMOS three-stage gain-compensation amplifier for phased-array radar system

• DOI: 10.1016/j.mejo.2023.105869
• Publication Date: 2023-06-13T12:30:29Z
• Authors: Bofan Chen; Zhiqun Li; Jinghao Di; Xiaowei Wang; Xuefan Yang
• Keywords: Wideband; Return loss

A fully integrated 6–18 GHz bulk CMOS ultra-wideband (UWB) gain-compensation amplifier for phased-array radar system based on SMIC 40-nm process is presented in this paper. Combined with dual-branch input matching network, three-stage cascaded amplification and both the inductive series- shunt-peaking techniques, gain 3-dB bandwidth (BW) further extended. The fabricated UWB achieves a flat of 8.7–13.3 dB an averaged noise figure (NF) 5.75 return loss better than −15.1 dB. Measured 1-dB compression point (IP1dB) −11.9 dBm at 12 GHz. totally consumes 33.6 mW from 1.2-V supply occupies area 0.337 mm2.