摘要
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)d B,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 d B,在全频段内无条件稳定。
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.
出处
《微型机与应用》
2014年第20期20-22,共3页
Microcomputer & Its Applications
