摘要
通过在共源共栅电路中加入线性辅助电路,利用线性化补偿技术设计了一个位于雷达接收机前端的高线性低噪声放大器,在保持其他指标基本不变的情况下,线性度提高约17.5dB;该电路采用CMOS0.18μm工艺设计,电源电压1.8V,信号频率在2.9～3.6GHz,仿真结果是:增益大于10dB,噪声系数(NF)低于1.35dB,三阶输入截点功率(ⅡP3)为17.48dBm,消耗直流电流13.24mA。
One highly linear low noise amplifier adopting the technology of linearization compensation in the front-end of radar receiver was designed, which is realized with the auxiliary circuits from the common cascode circuit. The linearity was improved by 17.5dBm without sacrificing other fearuers. Simulated with the CMOS 0. 18μm process ,the result is： under the supplied voltage 1.8 V, band of the signal is 2.9 -3.6GHz , power gain ≥ 10dB, noise figure ≤ 1.35dB, input third - order intercept point is 17.48dBm respectively and the D. C. current consumed is 13.24mA.
出处
《微波学报》
CSCD
北大核心
2009年第1期68-70,74,共4页
Journal of Microwaves
基金
国家自然科学基金(60671057)
关键词
低噪声放大器
噪声系数
线性度
增益
三阶输入截点
Low noise amplifier, Noise figure, Linearity degree, Gain, Input third-order intercept point（ IIP3 ）
