查询词典 impedance

The device parameter as well as resonance frequency,mechanical quality factor and work band width were determined by the equiv- alent circuit input impedance admittance circle diagram .

分析压电式超声波换能器的等效电路，并由等效电路输入阻抗的导纳圆图确定了换能器的元器件参数以及谐振频率、机械品质因数和工作带宽等特征参量。

"Exception No.1: A unit having resistive circuity , high-impedance winding , and the like , not subject to excessive secondary-voltage build-up in case of electrical breakdown during the test may be tested :"

"例外1：具有电阻性电路，高阻抗绕组以及类似物在测试时由于电击穿可能产生过高次级电压的电源单元，可以按下列方法试验："

In this paper,finite-difference time-domain method was used to calculate the driving-point impedance of radial disk in circular groove guide.

引言圆形槽波导是一种新型波导，和传统波导相比，具有低损耗、高功率容量、低色散和宽频带等优良特性。

Second, proceeding with the fact thatthe constructing vector wave functions of conventional circular cylindrical and sphericalvector wave functions are linear independent solutions to the electromagnetic field waveequations in biisotropic medium,spectral impedance boundary conditions are proposed forinfinitely long perfectly conducting circular cylinder and sphere coated with biisotropic media,respectively,which generalize the applicable range of planar structures and are suitable toanalyze the electromagnetic problems involving their counterpart structures.

所用的方法是在Fourier变换谱域中的一阶线性微分方程组理论和矩阵技术，提出了适用于Chiral媒质半空间辐射问题的耦合镜像原理(即镜像电流的振幅和相位是由Chiral媒质中的本征左、右旋圆极化波相互耦合来确定的)和适用于研究平面分层Chiral媒质电磁问题的一般性更高的分析方法。

During experiment researches, an impedance converter is designed to connect the standard port with the antenna input port, and the method of comparing with standard linear polarized antenna is used to measure array antenna circular polarized gain.

在实验中，设计了用于连接标准接口和天线输入口的阻抗变换器，对阵列天线辐射特性的测量采用了标准线极化天线比较法。

In this paper the coupling impedance of circular comb slow wave structure is investigated in detail.

对目前慢波结构的模拟计算中存在的问题进行了深入分析，并提出了新的计算耦合阻抗的方法。

The study leads to the conclusion that the circular comb slow wave structure has an impedance over 1 Ω at its fundamental mode within a relatively wide band and may interact with the beam effectively.

该结构内孔径为波长的1/4~1/3，是同一频段螺旋线慢波结构的5倍左右，能容纳比螺旋线大25倍的电流，能够承受比螺旋线大25倍的平均功率。

The ID of each zone in the selection set must be included in both the row and column IDs of the impedance matrix and the base year P-A matrix.

选择集中小区对的ID必须包括在阻抗矩阵和基年PA矩阵的行列Ids中。

By detailedly deriving the equations of the input impedance, transconductance, voltage gain and noise figure, an inductive degeneration common emitter low noise amplifier which is used in an ultra high frequency receiver chip is designed.

通过详尽推导电感负反馈共发射极低噪声放大器的输入阻抗、跨导、电压增益以及噪声系数的表达式，讨论并设计了一个应用于超高频接收芯片的低噪声放大器。

In order to drive a high impedance load such as HPM sources, it is necessary to commutate FCG's long pulse width, high-current and low voltage pulse to a short pulse with high voltage.

为用FCG驱动象HPM源这样较高阻抗的负载，必须使用脉冲功率调制电路把FCG产生的低电压、大电流、上升时间长的电压脉冲转化为高电压、上升时间短的脉冲。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。