3-to-5GHz 4-Channel UWB Beamforming Transmitter with 1° Phase Resolution Through Calibrated Vernier Delay Line in 0.13µm CMOS

📋 论文概要

本文提出了一种基于校准游标延迟线的3-5GHz四通道UWB波束赋形发射机，通过高精度延迟控制实现1°相位分辨率，解决了传统相移器在UWB频段损耗大、体积大和窄带的问题。

💡 主要创新点

• 采用校准游标延迟线实现高精度延迟控制，达到1°相位分辨率。
• 四通道架构支持波束赋形和波束转向，适用于UWB通信。

🏷 关键词

📄 原文摘要

Narrow-band phased-array transmitters provide an efficient way of obtaining higher power through spatial combining and achieving higher transmitter EIRP. They also provide beamforming and beam-steering capabilities [1]. However, the commonly used phase shifter or LO phase-shifting techniques at RF become less attractive for 3-to-5GHz UWB due to their lossy, bulky and narrowband characteristics. On the other hand, True-Time-Delay (TTD)-based beamforming transmitters employed at baseband have been popularly adopted due to UWB’s inherent digitally intensive nature [2]. However owing to the limited achievable delay resolution and delay accuracy, the reported phase resolution is normally limited to 10°. This work introduces a 3-to-5GHz UWB beamforming system spanning from -45° to 90° phase range with 1° phase resolution. The fine delay resolution is achieved through a Vernier delay line without the need of advanced

👥 作者与机构

Lei Wang, Yong Xin Guo, Yong Lian, Chun Huat Heng

National University of Singapore, Singapore, Singapore