In order to achieve larger bandwidth, it is necessary to use tight coupled sections which are difficult to realize especially high phase shift and low permittivity.
为了实现更大的带宽，就必须使用紧耦合的条文，是很难实现相移，尤其是高，低介电常数。
Diamond has many characters, such as high thermal, low permittivity, high band gap, super high hardness, low friction etc, which makes it possible to be widely used in industry.
金刚石具有高导热率、低介电系数、高禁带宽度、超高硬度、低摩擦系数等性质，在国民经济的许多部门得到了广泛的应用。
The electromagnetic band-gap (EBG) materials is used to design the aperture coupled patch antennas, and both high permittivity and low permittivity materials are considered in this paper.
将电磁带隙材料用于孔径耦合微带天线的设计，利用其频率带隙抑制天线中激励的表面波，分别考虑高介电常数和低介电常数的情况。
The electromagnetic band-gap (EBG) materials is used to design the aperture coupled patch antennas, and both high permittivity and low permittivity materials are considered in this paper.
将电磁带隙材料用于孔径耦合微带天线的设计，利用其频率带隙抑制天线中激励的表面波，分别考虑高介电常数和低介电常数的情况。
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