These tiny devices are capable of detecting very weak pulses of light and amplifying them with unprecedented bandwidth and minimal addition of unwanted noise.
这些微型设备具备探测非常微弱的光脉冲、并且以前所未有的带宽将它们放大、同时使额外产生的不必要的噪声最小化的能力。
After the bandwidth and temperature, the remaining factor in determining the system noise is the effective source resistance.
讨论了带宽和温度以后，决定系统噪声的另一个因素就是等效源电阻。
Johnson noise is uniformly distributed over a wide frequency range, so reducing the noise bandwidth effectively decreases the noise in the measurement.
约翰逊噪声在很宽的频率范围内呈均匀分布，所以减小噪声带宽能够有效地降低测量中的噪声。
Besides multistage EDFA making the bandwidth reduced and noise increased, the material dispersion of optical fibers is also an important factor to affect WDM systems.
除了多级光纤放大器(EDFA)使带宽减小，噪声增大，光纤的材料色散也是对WDM系统影响的重要因素。
The effect of thermal noise and vehicle dynamics on carrier tracking loop are also analyzed, and the optimal bandwidth of carrier tracking loop is obtained.
并以相位跟踪环路为例分析了热噪声及载体动态性对环路的影响，得出了环路设计的最佳带宽。
Active inductor loads and direct-coupled technology are employed to increase the gain, broaden the bandwidth, reduce the power dissipation, and keep a tolerable noise performance.
该放大器采用有源电感负载技术和放大器直接耦合技术以提高增益，拓展带宽，降低功耗并保持了良好的噪声性能。
CDMA technology is widely used in LEO satellites communication because of many merits offered by CDMA system such as suppression of ingress noise, flexibility of bandwidth assignment and the security.
CDMA作为一种抗噪声强、带宽分配灵活，保密性强的传输接入方式被广泛的应用于民用、军用低轨卫星通信系统中。
Johnson noise may be reduced by lowering the temperature of the source resistance and by decreasing the bandwidth of the measurement.
降低源电阻的温度、减小测量的带宽可以降低约翰逊噪声。
Note that noise bandwidth isn't necessarily the same as signal bandwidth.
注意，噪声带宽不必与信号带宽相同。
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。
Signal sampling system of video communication over network usually has a low sampling rate suffering from the limited bandwidth, so aliasing noise is big problem.
受传输带宽限制，网络视频采集系统的采样率低，欠采样噪声严重。
The front end's programmable input bandwidth ensures sharp, low noise images at all resolutions.
前端的可编程输入带宽可确保在所有分辨率清晰，低噪声的图像。
The previous equations suggest several means for reducing Johnson noise. It might be possible to reduce the bandwidth, the source temperature, or the source resistance.
上述公式给出了降低约翰逊噪声的几种方法，即可以减小带宽、降低源的温度或者降低源电阻。
The factors that influence the phase noise and tuning bandwidth are also discussed here.
文中对影响调频带宽、相位噪声的因素进行了分析讨论。
Some realization ways of measurement are discussed, including the maximum output power, output amplitude and noise bandwidth.
讨论了低频噪声源的最大输出功率、噪声输出幅度以及噪声带宽测试的实现途径。
The avalanche photodiode detector is followed by a front-end amplifier and equalizer or filter to provide gain as well as linear signal processing and noise bandwidth redution.
前置放大器与均衡器或滤波器跟在雪崩二极管检测器的后面以获得增益，线性信号处理及噪声宽带的抑制。
The extent of inventory fluctuating induced by different smoothing forecasting model can be measured by noise bandwidth, and the inventory fluctuating can be reduced by matched filtering.
通过噪声带宽分别衡量不同指数平滑预测模型引起供应链库存波动的程度，并且通过匹配滤波的方法可以减少不同预测模型引起供应链的波动性。
As data transmission based on the 3g networks, network bandwidth is very difficult to guarantee and often received Many Interferences which came from noise and the same channel and so on.
由于3g网络对于数据传输而言，网络带宽是难以保证的恒定的，而且经常收到噪声，同信道等因素的干扰。
Many existing CO DSL modems may only support a relatively narrow receive frequency range, which will increase the difficulty of estimating the much wider bandwidth far-end loop noise.
许多已有的CO(中心局)dsl调制解调器可以只支持相对较窄的接收频率范围，这会增加估计宽的多的远端环路噪声的难度。
Additionally, the carrier loop noise bandwidth and the correlator spacing are reduced. Then the accuracy of carrier and code tracking loops is improved significantly.
同时，降低载波环噪声带宽，减小码环相关间隔，从而提高了载波环和码环的跟踪精度。
The basic requirements of the LNA include: low noise figure, enough power gain, reliable work stability, sufficient bandwidth and the wide dynamic range.
对低噪声放大器的基本要求是：噪声系数低、足够的功率增益、工作稳定性可靠、足够的带宽和大的动态范围等。
The bandwidth of the overall system will limit the amount of information that can be transmitted through the system and the amount of noise that can enter the system.
整个系统的带宽将可以限制通过系统传输的信息量，并且可以限制进入系统进行传输的噪音量。
Experiments show that this system is particularly effective for statistical noise reduction within the complete television image bandwidth.
实时处理实验表明，该系统对降低图像的统计型全频带噪声特别有效。
The effect of bandwidth division on the improvement of the frequency spectrum utilization is analyzed under the condition of the multi-access interference and Gaussian white noise.
分析了在信道存在加性白噪声和多址干扰的条件下，频带细化对提高频谱利用率的作用。
Successful seismic inversion usually requires a high signal-to-noise ratio and a large bandwidth.
成功的地震反演通常需要数据具有较高的信噪比和较宽的带宽。
Results show that the spectral bandwidth of noise-like pulse will increase as the net cavity GVD increases and attains maximum when the GVD is slightly positive.
结果表明：类噪声脉冲的带宽随着腔内净色散的增加而增加，并在腔内净色散为微正时达到最大值。
What is the channel capacity for a teleprinter channel with a 300-hz bandwidth and a signal-to-noise ratio of 3 dB, where the noise is white thermal noise?
一个电传打印机的带宽是300hz，信道内所传信号的平均功率与白热噪声功率的比值为3分贝，问其信道容量是多少？
Underwater acoustic channel is a time-space-frequency variant channel, having a character for narrow bandwidth, high ambient noise level and strong interference of multipath.
而由此构成的水声信道是一个空间与频率响应随机快速变化的传输信道，存在窄带、高噪及强多途干扰。
Due to its excellent performance, such as bandwidth, power dissipation, noise immunity and opening property, PCI wins rapidly increasing popularization and extensive applications.
PCI总线在数据带宽、功耗、抗干扰性、开放性等诸方面的优良性能使其得到了迅速的普及和广泛的应用。
SYSTEM noise increases as operating supply current drops, and bandwidth decreases.
噪声又会增加，且带宽也跟着减小。
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