一种应用于K波段的宽锁定范围的CMOS注入锁定三倍频器

An Injection-Locked CMOS Frequency Tripler with Wide Locking Range for K-band Application

对传统的注入锁定三倍频器（ILFT）进行改进,提出了一种应用于K波段的注入锁定三倍频器,该注入锁定三倍频器在传统结构的基础上加上两个旁路电流源,在不牺牲功耗的前提下,提高了三次谐波的注入效率,解决了传统结构中存在的锁定范围和功耗的折中问题.该注入锁定三倍频器采用TSMC 130nm工艺进行设计,电源电压1.2V,仿真结果表明在输入信号功率为2dBm时,锁定范围为5.1 GHz,工作范围是21.0~26.1GHz,最大功耗为7.8mW.

An injection-locked frequency tripler for K-band is presented to improve the traditional one. By means of two current sources in parallel to the injection-locked oscillator, the third harmonic injection ratio is increased without increasing the power consumption. Due to this topology, there is no tradeoff between locking range and power consumption, which exists in the conventional ILFT. The proposed ILFT is designed using TSMC 130-nm technology with a supply voltage of 1.2 V. The simulation results show that the locking range is 5.1 GHz from 21.0 GHz to 26. 1 GHz when the input signal power is 2 dBm and the largest power consumption is 7.8 roW.