用于低场NMR的低噪声前置放大器研制

李科言, 程鑫, 陈俊飞, 曹丽, 黄臻, 刘朝阳

Development of Low-noise Preamplifier for Low-field NMR

LI Keyan, CHENG Xin, CHEN Junfei, CAO Li, HUANG Zhen, LIU Chaoyang

图9 LNA噪声参数. (a)噪声系数；(b)等效输入电压噪声密度

Fig. 9 LNA noise parameters. (a) Noise figure; (b) Equivalent input voltage noise density