On the basis of the noise linearity of lownoiseamplifier(LNA), the variable load temperature method is introduced to measure noise properties of cryogenic LNAs.
在低噪声放大器噪声线性的基础上,介绍了负载温度可变法,用于测量低温低噪声放大器的噪声。
3
The lownoiseamplifier (LNA) can reduce the system noise and improve the receiver's sensitivity, it is the key-part in the receive system.