A 5-to-16GHz Reconfigurable Quadrature Receiver with 50% Duty-Cycle LO and IQ-Leakage Suppression

📋 论文概要

该论文提出了一种覆盖5-16GHz的可重构正交接收机，采用50%占空比本振并引入IQ泄漏抑制技术，解决了宽带接收机中因本振谐波和失配导致的镜像抑制问题，实现了宽频带、高灵活性的信号接收。

💡 主要创新点

• 采用50%占空比的本振信号，改善了正交混频器的幅度和相位匹配，降低镜像抑制对带宽的依赖。
• 引入IQ泄漏抑制机制，通过校准或电路技术减小本振泄漏和直流偏移，提高接收机动态范围。
• 实现5-16GHz的宽带可重构，支持多种通信与雷达协议，并可根据不同频段优化功耗。

🏷 关键词

📄 原文摘要

Agile multi-functional RF systems supporting multiple communication and radar protocols are of greater demand in modern wireless applications. The core of these systems is the transceiver IC that covers an ultra-wide frequency range from sub-GHz to >20GHz, provides highly flexible signal bandwidths, and adjusts its power consumption accordingly in different use cases. This imposes several design challenges. Firstly, the RF front-end must process the incoming signal over a wide frequency range (fRF) without contributing excessive noise and distortions [1,2]. Secondly, the difficulty of generating multi-phase clocks with low phase mismatches and low jitter that are essential for mixing grows significantly at higher carrier (fLO) frequencies [2]. Thirdly,

👥 作者与机构

Hao Xu1,2, Junyan Bi1, Tenghao Zou1, Weitao He1, Yaxin Zeng1, Junjie Gu1,

Ziyang Jiao1, Shubin Liu3, Zhangming Zhu3, Na Yan1,2 Fudan University, Shanghai, China Jiashan-Fudan Joint Research Institute, Jiaxing, China 3 Xidian University, Xi’an, China 1 2