A Gm-C RF Quadrature-Current-Generation Technique with 40dB IRR in 0.65V 2mW Multi-Mode CMOS GNSS Receiver

📋 论文概要

该论文提出了一种基于Gm-C的射频正交电流生成技术，用于多模式CMOS GNSS接收机，实现了0.65V供电、2mW功耗下的40dB图像抑制比。通过消除LO正交2分频器和缓冲器，提高了功率效率，适用于可穿戴设备。

💡 主要创新点

• 提出Gm-C射频正交电流生成技术，无需LO正交分频和缓冲，降低了功耗。
• 在0.65V超低电压下实现40dB图像抑制比（IRR），兼顾性能与能效。

🏷 关键词

📄 原文摘要

Nanjing Low Power IC Technology Institute, Nanjing, China 1 2 For wearable devices such as GNSS bracelets and BLE headsets, the pursuit of lowering power consumption is an everlasting research topic [1-5]. Innovated topologies and circuit structures have been presented in many works aiming to lower working current and accommodate ultra-low supply voltage [6-12]. Among those efforts, a signal-quadrature receiver often exhibits higher power efficiency than an LO-quadrature topology, as the VCO frequency is halved and the LO quadrature 2-divider along with the LO buffer is eliminated

👥 作者与机构

Chao Chen1, Wenchen Xiang2, Yan Zhao1, Xiaodong Su2, Jiuchun Chen2, Jun Yang1

Southeast University, Nanjing, China