A 24.5-43.5GHz Compact RX with Calibration-Free 32-56dB Full-Frequency Instantaneously Wideband Image Rejection Supporting Multi-Gb/s 64-QAM/256-QAM for Multi-Band 5G Massive MIMO
A 24.5-43.5GHz Compact RX with Calibration-Free 32-56dB Full-Frequency Instantaneously Wideband Image Rejection Supporting Multi-Gb/s 64-QAM/256-QAM for Multi-Band 5G Massive MIMO
复制标题
24.5-43.5GHz 紧凑型 RX，具有免校准 32-56dB 全频瞬时宽带镜像抑制功能，支持多 Gb/s 64-QAM/256-QAM，适用于多频段 5G Massive MIMO
DOI：
--
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Hua Wang
中科院分区：
文献类型：
--
作者：
Min;T. Chi;Fei Wang;Sensen Li;Tzu;Hua Wang
本文提出了一种24.5-43.5GHz紧凑型RX前端，实现32- 56 dB全频瞬时宽带镜像抑制，可覆盖24.5/28/37/39/43 GHz的主要毫米波5G频段。它采用基于变压器的IQ网络，能够适应大负载阻抗变换，并产生稳健的I/Q，提供阻抗放大和无源电压放大，以提高LO摆幅。它实现了低损耗毫米波I/Q LO生成，具有紧凑的尺寸（0.14mm2）和最先进的瞬时宽带宽25- 50 GHz，无需校准或开关/可调谐元件。在镜像抑制之后，宽带所需RX信号被成功解调，在具有相同调制方案和数据速率的宽带调制镜像信号下，显示出具有−27.6dB EVM的最先进的12 Gb/s 64-QAM和具有−33.47dB EVM的8 Gb/s 256-QAM。据作者所知，本文是第一个支持宽带调制多Gb/s 64-/256-QAM镜像抑制的演示接收机前端，无需校准，开关/调谐元件或外部控制，从而在复杂的EM环境中实现宽带低延迟5G MIMO。
This paper presents a 24.5-43.5GHz compact RX frontend achieving 32-56dB full-frequency instantaneously wideband image rejection, which can cover major mm-Wave 5G bands at 24.5/28/37/39/43 GHz. It utilizes a transformer-based IQ network able to accommodate large load impedance transformation with robust I/Q generation, which provides impedance up-scaling and passive voltage amplification to boost the LO swing. It achieves a low-loss mm-Wave I/Q LO generation with a compact size (0.14mm2) and state-of-the-art instantaneously broad bandwidth 25-50GHz without calibration or switching/tunable elements. After image rejection, the wideband desired RX signal is successfully demodulated, showing state-of-the-art 12Gb/s 64-QAM with −27.6dB EVM and 8Gb/s 256-QAM with −33.47dB EVM under wideband modulated image signals with the same modulation scheme and data rate. To the best of authors’ knowledge, this paper is the first demonstration receiver frontend to support broadband modulated multi-Gb/s 64-/256-QAM image rejection with no calibration, switching/tuning elements, or external controls, enabling wideband low-latency 5G MIMOs in complex EM environments.