A 0.6V 380µW -14dBm LO-Input 2.4GHz DoubleBalanced Current-Reusing Single-Gate CMOS Mixer with Cyclic Passive Combiner

📋 论文概要

本文提出了一种适用于蓝牙接收机的0.6V低电压混频器，采用电流复用单栅结构和循环无源组合器，解决了传统混频器需要大LO功率的问题。在2.4GHz频段实现了380µW超低功耗和-14dBm的LO输入功率，满足蓝牙-90dBm灵敏度要求。

💡 主要创新点

• 提出电流复用单栅CMOS混频器结构，在0.6V低电压下实现双平衡混频，降低功耗。
• 采用循环无源组合器（Cyclic Passive Combiner），显著降低所需LO输入功率至-14dBm，无需大功率LO驱动。
• 整体设计兼顾低电压、低功耗与RF性能，为蓝牙等短距离无线通信提供高效混频方案。

🏷 关键词

📄 原文摘要

A mixer is one of the bottlenecks in achieving the low-voltage operation of a receiver. Most of the mixer topologies recently reported for low-voltage and low-power applications can be categorized into bulk-injection mixers or switching mixers. However, the bulk-injection mixer requires a large LO power with an accurate modeling of the back-gate effect [1]. Switching mixers also require a large LO power in the range of 0dBm for ideal switching operation [2-5]. In this work, a 0.6V mixer for Bluetooth specification with a target sensitivity of -90dBm [6], which requires a NF of 12dB and IIP3 of -7dBm, is described. None of the previously published designs [1-5] satisfies these specifications. A single-gate mixer [7], which was formerly used for mm-wave applications, is modified to fit the low-voltage and low-power 2.4GHz-band application. Figures 12.5.1 and 12.5.2 show the building blocks of the proposed mixer.

👥 作者与机构

Jun Deguchi, Daisuke Miyashita, Mototsugu Hamada

Toshiba, Kawasaki, Japan