This brief presents a bidirectional nonlinearly coupled quadrature voltage-controlled oscillator (BNC-QVCO) incorporating passive phase interpolation for the generation of multiphase signals. In addition, to generate multiphase signals, the proposed bidirectional nonlinearly coupling network improves the phase noise performance of the QVCO by producing approximate-in-phase injection-coupling currents into the LC tank. Moreover, to balance the amplitude of eight-phase signals, an additional passive amplitude division circuit is implemented with capacitor banks for calibration. For verification, a BNC-QVCO incorporating passive phase interpolation is implemented in a 40-nm CMOS technology with a core area of 0.13 mm 2 . The measured multiphase signals achieve a phase noise of -116.57 dBc/Hz at 1-MHz offset from 4.32 GHz. The power consumption without buffers is 10.2 mW under 1-V supply voltage and a 20% frequency tuning range from 4 to 4.8 GHz is achieved with the implemented digitally controlled capacitor banks.

中文翻译：

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具有用于多相信号生成的无源相位插值的双向非线性耦合 QVCO


本简介介绍了一种双向非线性耦合正交压控振荡器 (BNC-QVCO)，其结合了用于生成多相信号的无源相位插值。此外，为了生成多相信号，所提出的双向非线性耦合网络通过在 LC 回路中产生近似同相的注入耦合电流来改善 QVCO 的相位噪声性能。此外，为了平衡八相信号的幅度，还实现了一个附加的无源幅度分配电路，并使用电容器组进行校准。为了验证，采用 40 nm CMOS 技术实现了包含无源相位插值的 BNC-QVCO，核心面积为 0.13 mm 2 。测量的多相信号在 4.32 GHz 偏移 1 MHz 时实现了 -116.57 dBc/Hz 的相位噪声。在 1V 电源电压下，无缓冲器的功耗为 10.2mW，通过实施的数控电容器组可实现 4 至 4.8GHz 的 20% 频率调谐范围。