查询词典 frequency bandwidth

The signal processing system consists of a band pass filter with center frequency of 2.856 GHz and bandwidth of 10 MHz,a logarithmic detector,a analog digital converting module...

本系统有效地采用了虚拟仪器的技术，具有模块化、开放性、易于交互、可扩展的特点，测试结果表明，其分辨率达到0.1 mm，符合设计要求。

For a single filter, the center frequency is 39.5MHz, the 20dB shape factor is 2.8, and a bandwidth is 49 kHz,respectively.

除此之外，吾人另制作高频单一滤波器的中心频率值39.5 MHz，波形常数为2.8，频宽为49kHz。

Measured results indicate that the filter's center frequency was 6.02 GHz with a 3-dB bandwidth of 1.14 GHz and this filter was free from oscillations with either an 2.2-dB insertion loss or a 0.56-dB transmission gain.

共震器的损耗补偿只作用於主动滤波器的导通频段内，而且介入损失的调整并不影响到主动滤波器的中心频率与 3 dB频宽。

Besides, when digital system is employed, the huge relative bandwidth signal can be generated on intermediate frequency.

此外，数字方法还可以在中频上产生出相对带宽很大的信号。

This allows frequency response peaking elements to be added, multiple input inverting summing circuits to have greater bandwidth, and low-power line drivers to meet the demanding require- ments of studio cameras and broadcast video.

这使得频率响应峰值要添加，多输入反相总结电路元件有更大的带宽，低功耗的线路驱动器，以满足要求需要，对演播室摄像机和广播视频目。

Experts recommend that you buy a digital TV pay attention to purchase "wide line frequency" and "high bandwidth" product.

专家建议您在购买数字电视时注意购买"宽行频"和"高带宽"的产品。

Experts recommend that you purchase select line frequency is greater than 33KHz, bandwidth greater than 30MHz digital TV.

专家建议您在购买时选择行频大于33KHz、带宽大于30MHz的数字电视。

In recent years, SiC FET power transistor and GaN high electron movability power transistor represent the third generation semiconductor-wide bandgap semiconductor power devices, have advantages of high breakdown voltage, high power density, as well as high output power, high operation efficiency, high operation frequency, wide instant aneous bandwidth, operation in high temperature environment and strong ability of resisting radiation.

近年来以SiC场效应功率晶体管和GaN高电子迁移率功率晶体管为代表的第三代半导体－宽禁带半导体功率器件具有击穿电压高、功率密度高、输出功率高、工作效率高、工作频率高、瞬时带宽宽、适合在高温环境下工作和抗辐射能力强等优点。

A comparison of the communication frequency bandwidth and the calculated MUF have been made.

本文首先简要介绍了1985年12月至1986年3月南极长城站与新乡的短波通信效果，可通信的时段与频段，并将频段与计算的MUF进行了比较。

It is found that the upper limit of the operational frequency bandwidth along the short great circle path which crosses the south-polar, region is approximately in accord with the calculated MUF and the other one along the long great circle path which crosses the north- polar region is different from the calculated MUF.

结果表明，经过南极区的短大圆路径的通信频段上限与计算的MUF基本相符；经过北极的长大圆路径的通信频段上限与计算的MUF有偏差。

Smoking cigarettes adds to the Computer Desk Computer manufacturer computer mouse Computer Computerized collar knitter machine Conduit Bodies construction board Container Bag Control Arm Cooking Thermometer general levels of air pollution as well as damaging our health.

吸烟不仅对健康有害，而且增加空气污染程度。香烟雾含有多种有害物质：不仅有致癌化学物质、有某种能阻止氧气进入血液的气体，还有引起血压增高、心速加快的被称为尼古丁的物质。

He is one of my favorite actors.

他是我最喜欢的男演员之一。