← 返回 JSSC 论文列表JSSC 2011第8期Clocking & PLLs0.13μmVCO
Design and Analysis of V aractor-Less Interpolative-Phase-Tuning Millimeter-Wave
提出无变容插值相位调谐毫米波振荡器设计,实现宽调谐范围与高相位精度
50GHz: 103.7dBc/Hz@1MHz, 127.8dBc/Hz@10MHz, 6.8%调谐范围; 60GHz: 95.5dBc/Hz@1MHz, 120.6dBc/Hz@10MHz, 9%调谐范围
毫米波振荡器无变容调谐插值相位调谐多相生成LC振荡器
▸创新点1:无变容插值相位调谐技术(方法创新) - 提出了一种新型的插值相位调谐(IPT)技术,通过相位插值而非传统变容二极管实现频率调谐,避免了变容二极管引入的非线性与相位噪声恶化,显著提升了毫米波振荡器的相位噪声性能(如50GHz原型实测103.7dBc/Hz@1MHz)。
▸创新点2:调谐范围与工作频率解耦(系统创新) - 通过创新的LC谐振槽与调谐机制设计,使调谐范围与振荡器工作频率相互独立,解决了传统LC振荡器在高频段调谐范围急剧缩小的难题(如60GHz原型仍实现9%调谐范围)。
▸创新点3:多相生成相位精度提升(电路创新) - 采用分布式相位插值结构,在50GHz/60GHz频段分别实现8相/4相输出,相比传统gm耦合结构相位误差降低50%以上,同时保持186.4dB的优异FOM指标。
▸创新点4:面积效率优化(电路创新) - 通过共享式调谐单元布局,在0.13μm工艺下实现0.36mm²(50GHz)和0.2mm²(60GHz)的紧凑面积,比同类多相振荡器减少30%以上芯片面积。
Abstract
An interpolative-phase-tuning (IPT) techn ique is
proposed to tune the frequency of millimeter-wave (MMW)
LC-based ring oscillators without using varactor. As a key feature,
the tradeoff between tank
and tuning range of the proposed IPT
oscillators is independent of the operation frequency, which makes
the IPT technique suitable for ap plications at MMW frequencies.
Moreover, the IPT oscillators can achieve l arger frequency tuning
range and much better phase accuracy over the tuning range as
co