A 1.0-to-2.5GHz Beamforming Receiver with Constant-Gm Vector Modulator Consuming < 9mW per Antenna Element in 65nm CMOS

📋 论文概要

该论文提出了一种工作在1.0至2.5GHz的波束赋形接收机，采用恒定跨导矢量调制器，每个天线单元功耗低于9mW，解决了多天线系统中低功耗和高线性度的权衡问题。

💡 主要创新点

• 采用自偏置反相器跨导器，在低电源电压下实现更好的跨导/电流比，同时通过偏置电阻实现阻抗匹配而不增加静态功耗。
• 利用无源混频器将基带低通滤波上变频为带通滤波，简化了射频滤波结构。

🏷 关键词

📄 原文摘要

Frank E. van Vliet1,2 University of Twente, Enschede, The Netherlands, TNO Science and Industry, The Hague, The Netherlands The inverter transconductor in Fig. 3.5.3 is self-biased, and consists of standardVt transistors, but is supplied with a low 1.0V supply voltage. This biases the transistors in moderate inversion for a better transconductance/current ratio at the cost of some increased capacitive parasitics. Impedance matching is realized by the bias resistor without extra static power consumption. The passive mixer upconverts the low-pass filtering in baseband, to a band-pass filtering on the inverter output node. This lowers the out-of-band RF voltage swing on the inverter output node, improving out-of-band linearity and compression. 1 2 Beamforming phased-array receivers aim to increase receiver sensitivity and reject interferers in the spatial domain [1,2]. A receiver with programmable

👥 作者与机构

Michiel C. M. Soer1, Eric A. M. Klumperink1, Bram Nauta1,