A Very-Low-Noise Frequency-Translational Quadrature-Hybrid Receiver for Carrier Aggregation

📋 论文概要

该论文提出了一种用于载波聚合的超低噪声频率转换正交混合接收机架构，解决了宽带接收机在多频段组合下噪声性能与复杂度的权衡问题。通过频率转换和正交混合技术，实现了低噪声系数和宽频带覆盖。

💡 主要创新点

• 提出频率转换正交混合架构，结合无源混频器和正交混合耦合器，实现低噪声和宽频带。
• 采用噪声抵消技术，在保持低噪声系数的同时支持多频段载波聚合。
• 通过优化混合器设计和阻抗匹配，提高了接收机的线性度和动态范围。

🏷 关键词

📄 原文摘要

To meet the demands of ever-increasing data throughput, carrier aggregation (CA) across frequency bands is becoming necessary. Different regional spectrum allocations lead to a large number of band combinations and challenge the antenna interface performance for inter-band CA. A dedicated antenna for each carrier severely increases the form factor of the device. Splitting the antenna signal with filter banks becomes very complex and costly due to the large number of band combinations. Existing wideband receiver architectures like FTNC [1] have excellent noise figure (NF) but cannot easily handle CA while current inter-band CA receivers [2,3] use separate antennas. We present a frequency-translational quadrature-hybrid (FTQH) receiver architecture that allows RF signal sharing between receivers; FTQH receivers can further be daisy-chained to share a single antenna among multiple receivers while maintaining excellent RF impedance

👥 作者与机构

Jianxun Zhu, Peter R. Kinget

Columbia University, New York, NY