阻抗

A prominent feature of this filter is that the spurious response can be controlled by the impedance ratio K of the resonator, thereby the performance for harmonic suppression is improved.

这种滤波器的特点是其寄生响应可以通过阻抗比K进行控制，因而增进了谐波抑制性能。

The method of moments is used to analyze and calculate the broadband characters of impedance,voltage satanding wave ratio,gain and radiation pattern of larger angle LPDA,and the relation between these characters and the parameter of antenna construction is discussed in this paper.

本文采用矩量法分析和计算了对数周期天线在张角较大时，它的阻抗、电压驻波比、增益及方向图的宽带特性，讨论了这些特性与天线结构参数之间的关系。

The broadband transmission-line transformer with 4:1 impedance transformation ratio is studied,its equivalent model with mutual coupling between transmission-lines is given,and its impedance transformation characteristics are analyzed.

研究了变换比为4：1的宽频带传输线变压器，给出了考虑线圈互耦的等效电路模型，分析了其阻抗变换特性。

Smith chart was used first, an resonator was designed, whose center frequency and impedance ratio are 930MHz and 0.172 respectly.

设计了一中心频率为930MHz，阻抗比为0.172的介质同轴谐振器，其总长度约等于八分之一波长。

Finally, determine reservoir lithology and pore fluid properties. This method requires only small and medium angle seismic data, and all other elastic parameters are from the elastic density ratio and acoustic impedance.

该方法仅需要近、中角度的地震数据，其他弹性属性参数是由弹性密度比与声波阻抗之间的关系通过道运算获得，提高了计算效率，可用于绝大多数采集条件下获得的地震数据叠前反演。

The electric characteristic parameters of this novel sleeve antenna are calculated, including the input impedance, voltage standing wave ratio, horizontal gain and radiation pattern.

研究了这种新型套筒天线的输入阻抗、电压驻波比、增益及辐射方向图等电特性。

A small size MMW CP microstrip antenna is designed using sequential phase rotation method in this paper.The simulation result shows that this antenna has wider impedance bandwidth and axial ratio bandwidth.

采用连续相位旋转法设计了一种四单元的小尺寸的毫米波圆极化微带天线阵列，仿真表明：该天线具有较宽的阻抗带宽和轴比带宽。

C Over a frequency range of 0 – 100 kHz, the measurement circuitry is to have a frequency response (ratio of indicated to actual value of current) that is equal to the ratio of the impedance of 1500 ohm resistor shunted by a 0.15 F capacitor to 1500 ohms.

频 率高于0-100KHz，测量电路有一个频率响应(标记电流和实际电流的比值)并且等于1500的输入阻抗并联上一个0.15F ，的电容与1500的比值。

Use bifurcation curve and analyze the effect on voltage stability by static load model,propose that critical voltage decrease with the constant impedance ratio increasing.

使用分岔曲线，分析了负荷静态模型对系统电压失稳临界点电压值的影响，得出系统发生电压失稳时临界电压值随负荷模型中恒阻抗负荷比例的增加而降低，并对北京电网进行实例分析。

Sections such as P- and S-wave impedance, velocity ratio of P- and S-wave,λρ, and μρ, as well as crossplotting sections of different lithological parameters were generated.

利用这些成果，可以得到比常规波阻抗反演更准确、更丰富的储层信息，在目标储层的含气性识别中取得了很好地效果。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。