JSSC 2021第6期RF & Wireless40nm

120-GHz Wideband I/Q Receiver Based on Baseband Equalizing Technique Tae Hwan Jang , Associate Member , IEEE, Dong

基于基带均衡技术的120GHz宽带IQ接收器设计

3-dB带宽26GHz, 噪声系数10.8dB, 功耗153.4mW, 最高数据率16Gb/s

毫米波接收器CMOS技术基带均衡直接转换宽带通信

▸创新点1：采用基带均衡技术扩展带宽（方法创新）。通过LNA-混频器和基带放大器之间的频率均衡技术，将整体带宽显著提升至5 GHz，解决了高频信号传输中的带宽限制问题，实现了26 GHz的3-dB转换增益带宽。

▸创新点2：直接转换结构实现低功耗（系统创新）。基于40-nm CMOS技术集成接收器芯片组，采用零中频架构避免了传统超外差结构的功耗问题，总功耗仅为153.4 mW，显著降低了系统能耗。

▸创新点3：双模式可变增益设计（电路创新）。通过可调基带放大器实现高增益模式（28.2 dB）和低增益模式（14.8 dB）的动态切换，适应不同信噪比场景，支持BPSK/QPSK/16-QAM多制式下最高16 Gb/s的数据速率。

▸创新点4：宽带性能与高集成度协同优化（系统创新）。在1.5 mm²芯片面积内同时实现10.8 dB噪声系数、12.5-16 Gb/s数据吞吐量及5 GHz均衡带宽，突破了毫米波接收机在面积-性能权衡上的传统限制。

Abstract

In this study, we examined a 120-GHz wideband I/Q receiver based on a baseband equalizing ampliﬁer using 40-nm complementary metal oxide semiconductor (CMOS) technology. For low-power operation, the receiver chipset is integrated based on the direct conversion structure. To achieve high data-rate wireless communication, the receiver utilizes a frequency equal- izing technique between the low noise ampliﬁer (LNA)-mixer and baseband ampliﬁer. With the proposed technique, the estimated overall bandwidth is increased as wider as 5 GHz. The 3-dB conversion gain bandwidth is 26 GHz, noise ﬁgure (NF) is 10.8 dB, and dc power consumption is 153.4 mW. For the dual-mode operation, the variable gain of the baseband ampliﬁer is applied, and the conversion gain of the proposed receiver is 28.2 dB for the high gain mode and 14.8 dB for the low gain mode. The chip area of the receiver is 1.5 mm 2. The proposed receiver exhibits a maximum data-rate of 12.5, 16, and 16 Gb/s for binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), and 16-quadrature amplitude modulation (16-QAM), respectively.