A 4 × 4 Fully Integrated RF Transceiver in 6 GHz Frequency Band With Single-Channel Bandwidth of 400 MHz and PHY Data-Rate of 8.8 Gbps

IF 4 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-03-18 DOI:10.1109/TCSII.2025.3552472

Youming Zhang;Fengyi Huang;Xusheng Tang;Junjie Li;Zhennan Wei;Yunqi Cao

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引用次数: 0

Abstract

This brief presents a fully integrated CMOS

$4\times 4$

MIMO RF transceiver (TRX) with single-channel bandwidth (BW) of 400 MHz in the 6 GHz band (5.925-7.125 GHz). In the receiver (RX) frontend, an improved noise-canceling low noise amplifier (LNA) and a cross-coupled transconductance

$(G_{M})$

with IIP2 enhancement is implemented. In the transmitter (TX) frontend, a power amplifier driver (PAD) is integrated with cascade AM-PM distortion compensation to eliminate the AM-PM distortion. A hierarchical LO distribution network is employed in the 1-to-4 LO distribution chain to enhance the consistency among the LO branches. The single-chip TRX is reconfigurable for TDD/FDD operation, with the RX exhibiting a noise figure of 3.5-4.1 dB, a gain control range of 45 dB with 1 dB step and ±0.2 dB gain flatness. The TX output spectrum exhibits >32 dBc signal to noise ratio (SNR). The RX and TX error vector magnitudes (EVMs) are −30.2 dB and −30.5 dB, respectively, with 160 MHz BW 256QAM. A TX-to-RX PHY data-rate of 8.8 Gbps based on

$4\times 4$

MIMO is achieved, with other major parameters comparable to the prior arts without resorting to digital calibration circuits.

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6ghz频段4 × 4全集成射频收发器，单通道带宽400mhz， PHY数据速率8.8 Gbps

本简报介绍了一种完全集成的CMOS $4\ × 4$ MIMO射频收发器（TRX），在6 GHz频段（5.925-7.125 GHz）中单通道带宽（BW）为400 MHz。在接收机（RX）前端，实现了一个改进的降噪低噪声放大器（LNA）和一个具有IIP2增强的交叉耦合跨导$(G_{M})$。在发射器（TX）前端，功率放大器驱动器（PAD）集成了级联调频失真补偿，以消除调频失真。在1到4的LO分配链中采用分层的LO分配网络，以增强LO分支机构之间的一致性。单芯片TRX可重新配置用于TDD/FDD操作，RX的噪声系数为3.5-4.1 dB，增益控制范围为45 dB，步进为1 dB，增益平坦度为±0.2 dB。TX输出频谱显示bbb32dbc的信噪比（SNR）。在160 MHz BW 256QAM下，RX和TX误差矢量幅度（evm）分别为- 30.2 dB和- 30.5 dB。基于$4 × 4$ MIMO实现了8.8 Gbps的TX-to-RX PHY数据速率，其他主要参数与现有技术相当，而无需诉诸数字校准电路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程：电子与电气

CiteScore

7.90

自引率

20.50%

发文量

883

审稿时长

3.0 months

期刊介绍： TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.