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1)  Effective relative permittivity
有效相对介电常数
2)  effective relative dielectric constant
等效相对介电常数
1.
Closed form expressions were derived for evaluating the effective relative dielectric constant and characteristic impedance by using a sequence of conformal transformations.
基于一系列保角变换 ,导出了计算非对称槽宽 MCCPW的等效相对介电常数和特性阻抗的封闭表达式 ,研究了 MCCPW的非对称槽宽对准静态参量的影响 。
3)  effective dielectric constant
有效介电常数
1.
We calculate effective dielectric constant of a single carbon nanotube with the mean field method.
把有序排列的碳纳米管看做二维光子晶体,引入平均场方法,先计算单根纳米碳管的有效介电常数,再用时域有限差分方法(FDTD)计算碳管阵列的有效介电常数,其结果与Maxwell-Garnett(MG)法结果相比,更接近实验数据。
2.
The effective dielectric constant of single Carbon Nanotube is first calculated,then the On-shell method is applied to calculating the effective dielectric constant of two-dimensional crystal in array Carbon Nanotube.
引入平均场方法,计算单根碳管的有效介电常数。
3.
A novel trapped image guide(NTIG) suitable for millimeter-wave integrated circuits is proposed,and the dispersion properties of the novel trapped image guide are obtained using the effective dielectric constant and the transverse resonance condition.
文中运用有效介电常数和横向谐振条件,将该新型结构等效成简化模型,并推导了新型陷波镜像波导相移常数的计算公式;最后给出2个计算实例,计算结果与Ansoft HFSS仿真结果吻合较好,说明该方法是行之有效的。
4)  effective permittivity
有效介电常数
1.
The methods for measuring the characteristic impendence and the effective permittivity at the multi discontinuity of transmission line are introduced.
本文作者提出了采用时域反射测量方法测量传输线的多点不连续性 ,推导了测量传输线多点不连续性所需要的公式 ,介绍了测量传输线多个不连续点特性阻抗和传输线有效介电常数的方法 ,给出了一个传输线不连续性测量实例的实验结果和有关数据 ,对实验条件进行了说明 ,并对实验结果及其误差进行了讨论。
2.
The methods for measuring the characteristic impendence and the effective permittivity of coplanar waveguideswith conductor backing by time domain measurement are introduced.
介绍了测量不连续点特性阻抗和传输线有效介电常数的原理与方法,给出了测量背敷金属化层非对称共面波导的实验结果和有关数据,对实验进行了说明,并对实验结果及其误差进行了分析。
5)  relative dielectric constant
相对介电常数
1.
CAT of relative dielectric constant based on the method of "open-ended waveguide;
基于“终端开口波导法”相对介电常数的CAT
2.
In the frequency range of 40?Hz~50?kHz,the impedance of barium-bearing calcium sulfo-ferritealuminate mineral decreases with the increase of hydration ages;hydration ages affect relative dielectric constant greatly,and the relative dielectric constant shows fluctuant.
在40 Hz~50 kHz频率范围内,随水化龄期的增加各试样阻抗均下降;且水化时间对硫铁铝酸钡钙矿物相对介电常数的影响很大,表现出不稳定性;在低频40Hz~10 kHz之间,介电损耗正切值tanσ无规律,但在10~50kHz之间,tanσ随频率的增加呈下降趋势。
3.
Using Bohr atom struc-ture,the polarizability of electron polarization is studied;The equations of relative dielectric constant and refraction coefficient n of paper are obtained.
通过利用波尔圆轨道模型,研究了纸介质材料在外场作用下的极化机理和纸介质材料电子位移极化规律,推导出了纸介质材料的相对介电常数εr和折射率n的数学表达式,讨论了影响纸介质εr和n的有关因素。
6)  relative permittivity
相对介电常数
1.
The results show that the piezoelectric strain factor and relative permittivity in-crease with the increase of forming pressure, which is mainly due to the greater density of the microstructure of the composites .
结果表明:随着成型压力的增大,复合材料的结构越致密,其压电应变常数d33和相对介电常数εr均增大;而机电耦合性能则变化较小。
2.
The test principle of H 01 type cylinder resonator is discussed and the method to measure the relative permittivity of dielectric material and loss tangent by using the cylinder resonator is introduced in detail.
讨论 H0 1 型圆柱谐振腔的测试原理 ;详细介绍了用圆柱谐振腔测量介质材料相对介电常数及损耗角正切的方
3.
As both insulator and energy storage media, de-ionized water combines the advantages of high relative permittivity(is about 80), self repairability, low cost and ease of handling.
水介质具有高的相对介电常数(约80),而且具有自我恢复的能力,在脉冲功率系统中被广泛应用。
补充资料:相对介电常数
分子式:
CAS号:

性质:表征介质材料的介电性质或极化性质的物理参数。其值等于以欲测材料为介质与以真空为介质制成的同尺寸电容器电容量之比,该值也是材料贮电能力的表征。也称为相对电容率。不同材料不同温度下的相对介电常数不同,利用这一特性可以制成不同性能规格的电容器或有关元件。

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