一种采用LC谐振电路的高频差分有源电感

A High Frequency Differential Active InductorUsing LC Resonance Circuit

提出了一种采用LC并联谐振电路的新型差分有源电感,实现了宽的工作频带、高的Q值、较大的电感值和可调谐功能。采用无源电感和MOS晶体管可变电容构成LC谐振电路,减小了等效串联电阻和等效并联电容,在增大电感值、Q值的同时,扩大了工作频带。仿真结果表明,在2~7.6 GHz频率范围内,该新型差分有源电感的电感值大于26 nH,Q值大于138;在7.6 GHz高频下,电感值达130 nH,Q值达418,实现了宽工作频带范围内的高Q值和高电感值。与传统差分有源电感和带LC谐振电路的单端有源电感相比,该新型差分有源电感的性能较好。

A new type of differential active inductor based on LC parallel resonant circuit was proposed, which could achieve wide operating frequency band, high Q value, large inductance value and tunable performance. The LC resonant circuit was composed of passive inductor and variable capacitor of MOS transistor, which reduced the equivalent series resistance and equivalent shunt capacitance, and enlarged the working frequency band while increasing the inductance and Q values. The simulation results showed that the inductance value was greater than 26 nH and the Q value was greater than 138 at 2~ 7.6 GHz for the new differential active inductor. The inductance value was up to 130 nH, and the Q value was up to 418 at 7.6 GHz high frequency, so this inductor achieved high Q value and high inductance at wide operating band range. Compared with traditional differential active inductors and single-ended active inductors with LC resonant circuit, the performance of this new differential active inductors was better.