DPLL for Phase Noise Cancellation in Ring Oscillator-Based Quadrature Receivers
DPLL for Phase Noise Cancellation in Ring Oscillator-Based Quadrature Receivers
复制标题
用于基于环形振荡器的正交接收器中相位噪声消除的 DPLL
DOI：
10.1109/jssc.2017.2647925
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发表时间：
2017
影响因子：
5.4
通讯作者：
Mau
中科院分区：
文献类型：
--
作者：
Zuow;Yen;Yilei Li;B. Hu;C. Wong;Mau
本文提出了一种用于基于环形振荡器（RO）的正交接收机的低开销相位噪声消除技术。所提出的技术在背景中操作，并从数字锁相环中提取RO相位噪声以及电源引起的相位噪声。然后，使用所获得的相位噪声信息来在数字域中恢复随机旋转的基带信号。接收器原型是在标准的65纳米CMOS工艺制造。该器件在1 MHz失调时的相位噪声从−88 dBc/Hz降至−109 dBc/Hz，在2.4 GHz工作时的集成相位噪声从−16.8 dBc降至−34.6 dBc。
In this paper, a low overhead phase noise cancellation technique for ring oscillator (RO)-based quadrature receivers is presented. The proposed technique operates in background and extracts RO phase noise as well as supply-induced phase noise from the digital phase-locked loop. The obtained phase noise information is then used to restore the randomly rotated baseband signal in digital domain. A receiver prototype is fabricated in standard 65-nm CMOS technology. It demonstrates a phase noise reduction from −88 to −109 dBc/Hz at 1-MHz offset and an integrated phase noise reduction from −16.8 to −34.6 dBc when operating at 2.4 GHz.