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A 108145-GHz Eight-Phase 125-Duty-Cycle Nonoverlapping LO Generator With Automat
一款10.8-14.5GHz八相12.5%占空比非重叠LO发生器,用于60GHz八路径滤波子采样接收机。
10.8-14.5GHz, 77.8mW, 1V, 0.1°相位误差, -5dBm四次谐波输出
LO发生器八相非重叠注入锁定子采样接收机
▸创新点1:自动连续相位校准技术(方法创新)。通过内置反馈机制实时调整八相LO信号的相位偏差,实现最小0.1°的相位误差,显著提升毫米波接收机的正交信号精度。
▸创新点2:频域占空比自动校准技术(电路创新)。采用动态阈值调节电路,在10.8-14.5GHz范围内稳定维持12.5%占空比,输出功率谐波改善30dB以上,支持宽频带操作。
▸创新点3:可重构注入锁定NOR门设计(架构创新)。将环形振荡器与注入锁定机制结合,通过NOR门实现八相非重叠信号生成,相比传统多级分频方案功耗降低40%(77.8mW@1V)。
▸创新点4:多模振荡器频率调谐技术(系统创新)。集成四阶环形振荡器与可编程电容阵列,实现10.8-14.5GHz连续调谐范围,覆盖60GHz接收机全频段需求。
Abstract
A 10.8–14.5-GHz eight-phase 12.5%-duty-cycle
nonoverlapping LO generator is proposed for 60-GHz eight-path-
filtering subsampling receivers. A four-stage ring oscillator (RO)
is followed by reconfigurable injection-locked-oscillator NOR
gates to generate eight-phase 12.5%-duty-cycle signals featuring
automatic successive phase calibration and automatic frequency-
domain duty-cycle calibration. The generator prototype measures
minimum phase errors of ∼0.1◦ and maximum fourth-harmonic
output power