Ultralow Power E-Band Low-Noise Amplifier With Three-Stacked Current-Sharing Amplification Stages in 28-nm CMOS
Liang Qiu, Jiabing Liu, Qianyi Dong, Zhihao Lv, Kailong Zhao, Shengjie Wang, Yen‐Cheng Kuan, Qun Jane Gu, Xiaopeng Yu, Chunyi Song, Zhiwei Xu
Abstract
This letter presents a differential ultralow power low-noise amplifier (LNA) with stacked three-stage common-source (CS) amplification cells. A three-coil transformer is developed to boost each stage’s <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$g_{m}$ </tex-math></inline-formula> and reuse current, which renders high gain, low noise, and low power consumption. The proposed LNA has been implemented in a 28-nm CMOS process and achieves a peak gain of 13.48 dB and a minimum noise figure (NF <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{\mathrm {min}}$ </tex-math></inline-formula> ) of 4.56 dB. The measured 3-dB gain bandwidth ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${\text {BW}}_{3\,\text {dB}}$ </tex-math></inline-formula> ) is from 69.6 to 76.2 GHz. The LNA consumes 3.64-mW power from a 1.4-V supply and occupies 0.088-mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> area excluding pads.