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system noise figure 系统噪声指数
Features: Small reverse transfer capacitance, low noise figure. 特点:反向传输电容小,低噪声。
It uses noise-canceling technique for low noise figure (NF). 该放大器使用了杂讯抵消的技术，以达到低杂讯指标。
The noise figure of the tuner is 5.3dB, and the dynamic range of AGC control is more than 50dB. 制作的UHF电子调谐器噪声系数为5.;3分贝;自动增益控制能力达50分贝以上
The parallel termination can effectively suppress overshoot and undershoot that makes the signal swing less and the system noise tolerance larger. 戴维南并行端接可以有效地抑制过冲和欠冲，使得信号的摆幅缩小，增强了系统的噪声容限。
The typical value of the DSB noise figure of the mixer diode is 4.8 dB at 35 GHz,which ac-cord with the prospection. 研制出的混频管在35GHz时双边带噪声系数为4.;8db;接近预期结果
Lowest noise figure of a RF transistor is not normally where the input is perfectly matched. 射频晶体管的最低噪声系数通常不在输入完全匹配的地方。
SYSTEM noise increases as operating supply current drops, and bandwidth decreases. 电源电流降低时，系统噪声又会增加，且带宽也跟着减小。
The HEMT fabricated using this structure demon-strates a noise figure of 0. 76 dB and a gain of 6.5dB at 1? GHz. 用该结构材料制作的HEMT器件在12GHz下;噪声系数0.;76dB;相关增益6
The crosstalk among the channels of the TDM system and the system noise are measured . 对光纤水听器时分复用系统通道间串扰和系统噪声进行了测试。
The impact of gain, noise figure, and stability on RF CMOS image-reject LNA has been studied. 此篇文章将深入的探讨影像抑制金属氧化型低杂讯放大器的增益、杂讯指数和稳定度。
An interacting multiple model(IMM) adaptive filtering algorithm based on expected system noise model was presented. 本文提出基于期望系统噪声模型的自适应交互式多模型(IMM)算法。
Features: High gain bandwidth product, small output capacitance,low noise figure. 特点:产品增益带宽高，输出电容小，噪声系数低。
Features: High power gain, low noise figure, very low intermodulation distortion. 特点：高功率增益,低噪声输出,非常低的互调失真。
The measured results of the LNA show that the gain is 27 dB and the noise figure is smaller than 2 dB. 极小化的结构，使其易于与系统整合，使超宽频系统可朝向高度整合小型化的目标。
We have designed and made a new HTS mixing system mounted on the cryocooler.Some measures have been taken to decrease the system noise. 我们设计了与小型制冷机配套的高温超导混频系统，采取一些抑制系统噪声的措施。
The measured 1-dB gain compression point was -12 dBm, and simulated noise figure was 4.06 dB at 60 GHz. 缩小化的对偶巴伦是使用并电容在电路中的输入、输出或终止端。
Finally,achievements of conversion gain,Linearity and noise figure of CMOS mixers are summarized and compared. 最后,总结了CMOS混频器有关转换增益、线性度以及噪声系数的成果报道。
To FTF arithmetic belonging to RLS, its high convergence precision and fast convergence speed and briefness satisfy the need of mechanical system noise reduced. RLS中的FTF快速横向滤波器算法收敛精度高、收敛速度快、算法简单，能够满足机械系统振动信号降噪的要求。
The technical requirements include channel selection, noise figure and radiation emission limits. 技术要求包括频道选择、噪声系数和辐射发射限值。