noise figure

基本解释

Fiber amplifiers with high-power, wide-gain band and low-noise figure are required for applications to DWDM systems, fibre CATV system and space optical communication system.
近年来光纤放大器向大功率、大增益带宽以及低噪声方向发展，以满足密集波分复用系统、光纤CATV 系统和空间光通信系统的应用。
Fiber amplifiers with high-power, big-gain bandwidth and low-noise figure are required for their application to DWDM system, fiber CATV system and space laser communication system.
近年来光纤放大器向大功率、大增益带宽以及低噪声方向发展，以满足密集波分复用系统、光纤CATV系统、空间光通信系统的应用。
More than that, it uses geolocation and ambient-noise-matching technology to figure out where a person is and then automatically shares his photos with other nearby people and vice versa.
更重要的是，通过使用地里位置和环境声音匹配技术，能够测算出某人所处的位置，并且自动与附近的人分享照片，当然他也能够分享别人的。

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噪声系数
Test results show that this mixer achieves a conversion gain of 0.6 dB,an IIP3 of 6 dBm,and a noise figure of 18.7 dB.
测试结果表明,此混频器的增益为0.6 dB,IIP3为6 dBm,噪声系数NF为18.7dB。
噪声指数
噪声因数
噪音指数
杂讯度
杂讯指数
噪音系数
杂讯系数

噪声系数
The automation test system can test the following parameters for lownoise amplifiers: reflection coefficient, forward gain, gain flatness, insertion loss,ports isolation, IP_3 and noise figure.
自动测试系统对低噪声放大器测试以下指标：反射系数、前向增益、增益平坦度、插入损耗、端口隔离度、三阶交调截取点以及噪声系数等。
噪声指数
噪音指数
杂讯图