JSSC 2021第7期RF & Wireless40nmLNANeural Network Accelerator

A Cryogenic Broadband Sub-1-dB NF CMOS Low Noise Ampliﬁer for Quantum Applicatio

报道了一种基于40nm CMOS工艺的低温宽带低噪声放大器，用于量子应用。

40nm CMOS, 4.1-7.9 GHz, 0.23-0.65 dB NF, 39-51.1 mW

低温宽带低噪声放大器CMOS量子应用

▸利用输入晶体管的栅漏电容实现宽带输入匹配和低噪声

▸采用LC并联谐振电路扩展带宽

▸通过变压器谐振器实现双谐振频率负载

Abstract

A cryogenic broadband low noise ampliﬁer (LNA) for quantum applications based on a standard 40-nm CMOS technology is reported. The LNA speciﬁcations are derived from the readout of semiconductor quantum bits at 4.2 K, whose quan- tum information signals are characterized as phase-modulated signals. To achieve broadband input matching impedance and low noise ﬁgure, the gate-to-drain capacitance of the input transistor is exploited. The goal is to involve a resistive and capacitive load into the i