CAJ | 학술논문

针对国内北斗行业的发展，介绍了一种适用于北斗 B3频段的低噪声放大器的设计原理和设计方法，并给出了设计结果。为了达到更好的增益，采用了3级级联的方式。最终设计出的低噪声放大器在 B3频段内的增益为（40±0.5）dB，输入驻波系数小于1.5，输出驻波系数小于1.2，噪声系数小于1 dB ，在全频段内无条件稳定。
침대국내북두행업적발전，개소료일충괄용우북두 B3빈단적저조성방대기적설계원리화설계방법，병급출료설계결과。위료체도경호적증익，채용료3급급련적방식。최종설계출적저조성방대기재 B3빈단내적증익위（40±0.5）dB，수입주파계수소우1.5，수출주파계수소우1.2，조성계수소우1 dB ，재전빈단내무조건은정。
Aiming at the development of BD, the article describes a design principle and method of a low-noise amplifier which is suitable for BD′s B3 band and the design results are gave. To achieve better gain, it uses three cascaded manner. Finally, the low-noise amplifier designed has gain of (40±0.5)dB in B3 band, the input VSWR is less than 1.5, the output VSWR is less than 1.2, the noise figure is less than 1dB, and it has unconditional stability in the whole band.