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首页> 外文期刊>IEEE Journal of Solid-State Circuits >DPLL for Phase Noise Cancellation in Ring Oscillator-Based Quadrature Receivers
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DPLL for Phase Noise Cancellation in Ring Oscillator-Based Quadrature Receivers

机译:DPLL,用于基于环形振荡器的正交接收器中的相位噪声消除

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摘要

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.
机译:本文提出了一种基于环振荡器(RO)的正交接收机的低开销相位噪声消除技术。所提出的技术在后台运行,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,将获得的相位噪声信息用于恢复数字域中随机旋转的基带信号。接收器原型采用标准的65纳米CMOS技术制造。它证明了在1MHz偏移下,相位噪声从-88降低到-109 dBc / Hz,在2.4 GHz频率下工作时,积分相位噪声从-16.8降低到-34.6 dBc。

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