noise figure

基本解釋

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.
近年來光纖放大器向大功率、大增益帶寬以及低噪聲方向發(fā)展，以滿足密集波分復(fù)用系統(tǒng)、光纖CATV 系統(tǒng)和空間光通信系統(tǒng)的應(yīng)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.
近年來光纖放大器向大功率、大增益帶寬以及低噪聲方向發(fā)展，以滿足密集波分復(fù)用系統(tǒng)、光纖CATV系統(tǒng)、空間光通信系統(tǒng)的應(yīng)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，通過使用地里位置和環(huán)境聲音匹配技術(shù)，能夠測算出某人所處的位置，并且自動與附近的人分享照片，當然他也能夠分享別人的。

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FORBES: Manny Pacquaio Can Fight Anyone He Likes, But Boxing Has Bigger Worries

噪聲系數(shù)
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.
測試結(jié)果表明,此混頻器的增益為0.6 dB,IIP3為6 dBm,噪聲系數(shù)NF為18.7dB。
噪聲指數(shù)
噪聲因數(shù)
噪音指數(shù)
雜訊度
雜訊指數(shù)
噪音系數(shù)
雜訊系數(shù)

噪聲系數(shù)
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.
自動測試系統(tǒng)對低噪聲放大器測試以下指標：反射系數(shù)、前向增益、增益平坦度、插入損耗、端口隔離度、三階交調(diào)截取點以及噪聲系數(shù)等。
噪聲指數(shù)
噪音指數(shù)
雜訊圖