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A 1.5-3 GHz Quadrature Balanced Switched-Capacitor CMOS Transmitter for Full Duplex and Half Duplex Wireless Systems

机译:适用于全双工和半双工无线系统的1.5-3 GHz正交平衡开关电容CMOS发送器

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This work proposes a reconfigurable multi-mode digital transmitter based on quadrature balanced switched-capacitor power amplifiers (QB-SCPA), supporting both full duplex (FD) and half duplex (HD) operation. The QB-SCPA architecture provides built-in passive transmit-receive isolation along with an embedded and wideband self-interference cancellation (SIC) signal injection mechanism. In addition, it allows for phase noise suppression at the RX through clock sharing and exhibits excellent TX and RX linearity. In FD mode, we demonstrate >72 dB of total TX-RX isolation over a BW larger than 1 GHz at 21 dBm peak TX power with 17.4% system PAE. In HDTX mode, the system achieves 23 dBm peak TX power with 26.5% PAE.
机译:这项工作提出了一种基于正交平衡开关电容器功率放大器(QB-SCPA)的可重配置多模式数字发射机,它支持全双工(FD)和半双工(HD)操作。 QB-SCPA体系结构提供了内置的无源收发隔离以及嵌入式和宽带自干扰消除(SIC)信号注入机制。此外,它允许通过时钟共享在RX处抑制相位噪声,并具有出色的TX和RX线性度。在FD模式下,我们证明了在大于1 GHz的带宽上,在21 dBm峰值TX功率和17.4%系统PAE的情况下,大于TX的总TX-RX隔离度> 72 dB。在高清 TX 模式下,系统以26.5%的PAE达到23 dBm的峰值TX功率。

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