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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A Bluetooth 5 Transceiver With a Phase-Tracking RX and Its Corresponding Digital Baseband in 40-nm CMOS
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A Bluetooth 5 Transceiver With a Phase-Tracking RX and Its Corresponding Digital Baseband in 40-nm CMOS

机译：蓝牙5收发器，具有相位跟踪RX及其40nm CMOS中的相应数字基带

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摘要

A 0.8-V Bluetooth 5 (BT5) digitally intensive transceiver with a phase-tracking RX and a digital TX in 40-nm CMOS is presented. For the phase-tracking RX, a hybrid loop filter with a loop-delay compensation is proposed to suppress digitally controlled oscillator (DCO) sidelobe energy, enhancing interference resilience. To facilitate the DCO-based phase-tracking RX for the reception of BT5 signals, a corresponding digital baseband is implemented with a carrier frequency offset (CFO) calibration to remove the initial static CFO error during the preamble, while an automatic frequency calibration tackles the frequency drift during the payload. An all-digital phase-locked loop (ADPLL)-based digital frequency-modulation (FM) interface shared between TX and RX provides a precise deviation frequency control, ensuring the quality of signal transmission and reception. In the RX mode, the chip consumes 2.3 mW from a 0.8-V supply, achieving a figure of merit (FoM) of 180 dB with -91-/-94-dBm sensitivity at 2/1 Mb/s. In the TX mode, it consumes 6.1 mW when delivering a maximum 1.8-dBm output power, resulting in 25% TX system efficiency.
机译：呈现了具有相位跟踪Rx的0.8V蓝牙5（BT5）数字强化收发器和40nm CMOS中的数字TX。对于相位跟踪RX，提出了一种具有环延迟补偿的混合回路滤波器来抑制数字控制的振荡器（DCO）旁弦能量，增强干涉弹性。为了便于接收BT5信号的基于DCO的相位跟踪Rx，通过载波频率偏移（CFO）校准来实现相应的数字基带，以在前导码期间去除初始静态CFO误差，而自动频率校准会解决有效载荷期间的频率漂移。在TX和RX之间共享的全数字锁相环（ADPLL）基础的数字频率调制（FM）接口提供了精确的偏差频率控制，确保了信号传输和接收的质量。在RX模式下，芯片从0.8V供电消耗2.3兆瓦，实现180 dB的优点（FOM）的数字，在-91 - / - 94-DBM敏感度为2/1 MB / s。在TX模式下，在提供最大1.8 dBm的输出功率时，它会消耗6.1 MW，从而产生25％的TX系统效率。

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