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Design of High-Linearity Mixer-First Receivers for mm-Wave Digital MIMO Arrays
提出了一种用于毫米波数字MIMO阵列的高线性度混频器优先接收器设计
峰值IIP3 +14.1 dBm, 峰值增益14.5 dB, 噪声系数12.5 dB
毫米波MIMO阵列混频器优先接收器高线性度CMOS
▸增强基带和RF混频器开关的线性度技术
▸缓解LO重叠引起的电荷共享技术
▸内置可编程性以权衡增益和线性度
Abstract
A 10–35-GHz mixer-first receiver is proposed for
use in digital multiple-input–multiple-output (MIMO) arrays.
Techniques are proposed to enhance the linearity of such
receivers, both at baseband and the RF mixer switches. Tech-
niques to mitigate charge sharing due to local oscillator (LO)
overlap are also proposed. Detailed simulation results are pro-
vided to illustrate the benefits of these techniques. An integrated
circuit prototype is fabricated in 28-nm bulk CMOS and fully
characterized. The