An Integrated Full-Duplex/FDD Duplexer and Receiver Achieving 100MHz Bandwidth 58dB/48dB Self-Interference Suppression Using Hybrid-Analog-Digital Autonomous Adaptation Loops
An Integrated Full-Duplex/FDD Duplexer and Receiver Achieving 100MHz Bandwidth 58dB/48dB Self-Interference Suppression Using Hybrid-Analog-Digital Autonomous Adaptation Loops
复制标题
使用混合-模拟-数字自主适应环路实现 100MHz 带宽 58dB/48dB 自干扰抑制的集成全双工/FDD 双工器和接收器
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
Jin Zhou
中科院分区：
文献类型：
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作者：
Yuhe Cao;Xuanzhen Cao;Hyungjoo Seo;Jin Zhou
本文提出了一种1.5至2 GHz的CMOS电平衡放大器和接收机，同时支持频分双工（FDD）和带内全双工（IBFD）操作。所提出的多抽头和多级RF和模拟自干扰消除使用新的片上混合模拟数字自适应环路在真实的时间中自主地适应于时变信道。利用基于$Gm-C$的可重构频移来支持FDD操作。在测量中，在IBFD和FDD模式下，在100 MHz带宽上分别实现了58 dB和48 dB的RF/模拟自干扰抑制。使用建议的嵌入式自适应环路，无需任何高速ADC或DSP即可实现<50µs的自适应。
This paper presents a 1.5-to-2 GHz CMOS electrical-balance duplexer and receiver supporting both frequency-division duplexing (FDD) and in-band full-duplex (IBFD) operations. The proposed multi-tap and multi-stage RF and analog self-interference cancellation adapts itself autonomously to a time-varying channel in real time using a new on-chip hybrid-analog-digital adaptation loop. A $G_{m}-C$-based reconfigurable frequency shift is utilized to support FDD operation. In measurement, 58dB and 48dB RF/analog self-interference suppression are achieved across a 100MHz bandwidth in the IBFD and the FDD mode, respectively. Using the proposed embedded adaptation loops, <50µs adaptation is achieved without any high-speed ADC or DSP.