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Low-Power High-Linearity Mixer-First Receiver Using Implicit Capacitive Stacking
提出一种低功耗高线性度的被动混频器优先接收器，适用于物联网应用。
22nm FDSOI, 1.8-2.8GHz, 45-47dB转换增益, 2MHz基带带宽, 1.7-2.5mW功耗
低功耗高线性度被动混频器物联网N路径滤波器
▸采用新型N路径滤波器/混频器实现被动电压增益
▸利用隐式电容堆叠原理减少总电容需求
▸结合升压变压器实现高线性度和低噪声
Abstract
In this article, we present a passive mixer-first
receiver front end providing a low-power integrated solution
for high interference robustness in radios targeting Internet-
of-Things (IoT) applications. The receiver front end employs
a novel N-path filter/mixer, a linear baseband amplifier, and
a step-up transformer to realize sub-6-dB NF and >20-dBm
OB-IIP3 concurrently. The proposed N-path filter/mixer exploits
an implicit capacitive stacking principle to achieve passive
voltage gain of 3 during