Highly-Linear Integrated Magnetic-Free CirculatorReceiver for Full-Duplex Wireless

📋 论文概要

该论文提出了一种高线性度、集成无磁环行器接收机，用于全双工无线通信，解决了共享天线接口中低损耗、低噪声、高TX-RX隔离和大TX功率处理的问题。通过非互易有源共享天线双工方案，实现了优于传统互易接口的性能。

💡 主要创新点

• 提出了一种集成无磁环行器接收机架构，利用非互易性实现高TX-RX隔离，避免了磁性材料的使用。
• 实现了高线性度和低噪声性能，同时支持大功率TX信号处理，适用于全双工无线系统。

🏷 关键词

📄 原文摘要

implementation of low-cost, small-form-factor, integrated shared-antenna (ANT) interfaces with low loss, low noise, high TX-RX isolation, and large TX power handling. Providing more TX-RX isolation in the ANT interface that is robust to environmental variations lowers the self-interference cancellation (SIC) and dynamic range required in the RF, analog baseband (BB), and digital domains. Reciprocal sharedANT interfaces, such as electrical-balance duplexers [2], fundamentally feature at least 3dB loss (practically >4dB). A non-reciprocal active shared-ANT duplexing scheme was demonstrated in [3], but such active approaches are limited in their maximum supported TX power (-17.3dBm in [3] limited by RX compression) and noise performance. An integrated FD RX with a magnetic-free non-reciprocal passive circulator was demonstrated in [4]. Despite the circulator’s low loss and

👥 作者与机构

Negar Reiskarimian, Mahmood Baraani Dastjerdi, Jin Zhou, Harish Krishnaswamy

Columbia University, New York, NY A fundamental challenge of full-duplex (FD) wireless [1] is the