A 28GHz 20.3%-Transmitter-Efficiency 1.5°-Phase-Error Beamforming Front-End IC with Embedded Switches and Dual-Vector Variable-Gain Phase Shifters

📋 论文概要

本文提出了一款28GHz波束赋形前端IC，通过嵌入式天线开关和双矢量技术实现了20.3%的发射效率和1.5°的相位误差，解决了毫米波相控阵系统中发射效率与相位精度之间的权衡问题。

💡 主要创新点

• 采用嵌入式天线开关设计，在TX和RX之间实现25dB隔离，同时将NF增加控制在1dB以内，OP1dB下降仅0.42-1.15dB。
• 提出双矢量架构，在28GHz下实现1.5°的相位误差和20.3%的发射效率，兼顾了高精度波束赋形与低功耗。

🏷 关键词

📄 原文摘要

Hanbat National University, Daejeon, Korea *Equally-Credited Authors (ECAs) 1 respectively. The NF of RX at 28GHz is 4.58dB, which is increased only by 1dB compared to simulated NF of LNA without switch and PA. NF variations are 4.58 to 5.8dB with 14dB gain control. The OP1dB of TX is 13.95 to 14.6dBm from 26 to 30GHz, which is reduced only by approximately 0.42 to 1.15dB compared to measured OP1dB of the PA without switch and LNA. TX and PA efficiency at saturated output power are 20.3% and 31.6%, respectively. The embedded antenna switch has TX-to-antenna isolation of 25dB and antenna-to-RX isolation of 32dB at 28GHz in the RX and TX modes, respectively. 2 Millimeter-wave beamforming front-end ICs have been studied intensively as the service of 5G wireless communication is scheduled to begin in the near future [14]. The ICs include circuit elements such as PAs, LNAs, phase shifters, variable

👥 作者与机构

Jinseok Park*1, Seungchan Lee*1, Dongho Lee2, Songcheol Hong1

KAIST, Daejeon, Korea