← 返回 JSSC 论文列表JSSC 2011第5期Clocking & PLLs
A Novel Variable Inductor Using a Bridge Circuit and Its Application to a 520 GH
提出一种新型桥式电路可变电感器,应用于10-20 GHz可调LC-VCO核心,实现低功耗和宽调谐范围。
10-20 GHz连续调谐范围,相位噪声-103至-84 dBc/Hz,功耗5.2至7.1 mW
可变电感器桥式电路LC-VCO低功耗高频通信
▸创新点1:桥式电路可变电感器(电路创新)。通过在平衡点放置旁路开关MOSFET,有效抑制了开关电阻对可变电感的影响,从而减少了Q因子的退化,提升了电感器的性能。
▸创新点2:多级可变电感结构(系统创新)。采用多级可变电感设计,实现了10-20 GHz的连续调谐范围,相位噪声低至-103至-84 dBc/Hz,功耗仅为5.2至7.1 mW,显著提升了LC-VCO的调谐范围和能效。
▸创新点3:微型3D结构可变电感(方法创新)。通过微型3D结构设计,大幅缩小了芯片面积,仅为传统宽范围LC-VCO的1/10,同时保持了高性能,适用于高速通信系统和低功耗无线收发器。
▸创新点4:1/2分频器扩展调谐范围(电路创新)。通过使用1/2分频器,进一步扩展了LC-VCO的调谐范围至5-20 GHz,增强了系统的灵活性和适用性。
Abstract
Hirokazu Nagase, and Yoshihiro Hayashi
Abstract—A novel variable inductor using a bridge circuit is pro-
posed. Because of a bypass switch MOSFET placed at a balance
point, the effect of the switch resistance which is a penalty of the
variable inductance is suppressed and degradation of the Q factor
is mitigated.
A 10–20 GHz tunable LC-VCO core using this inductor was also
fabricated. Because of the multi-stage variable inductor, 20 GHz
operation having over 10 GHz continuous tuning range with