平面波planewave的设置--来自help文档2019.8.20

平面波planewave的设置--来自help文档2019.8.20

Plane wave 设置

Within this dialog, you may define a plane wave excitation source. Unlike discrete ports or waveguide ports, no S-parameters will be calculated. Instead, the stimulation amplitude (unit is V/m) is recorded. To obtain further information, you might specify probes or different types of field monitors. Combined with farfield monitors, the plane wave source can be used to compute the radar cross section (RCS).

在此对话框中，可以定义平面波激励源。与离散端口或波导端口不同，不会计算S参数。相反，记录刺激幅度（单位为V/m）。为了获得进一步的信息，您可以指定探测器或不同类型的现场监视器。平面波源与远场监测仪相结合，可用于计算雷达散射截面（RCS）。Polarization frame

偏振框架

Here, you may enter the polarization of the plane wave and polarization specific settings. For more information on the different polarization types, please see the Plane Wave Overview.

在这里，您可以输入平面波的偏振和偏振特定设置。有关不同极化类型的更多信息，请参见平面波概述。

Linear / Circular / Elliptical: Select here the type of plane wave excitation polarization.

线性/圆形/椭圆：在这里选择平面波激发极化的类型。

Ref. frequency: If the selected type is circular or elliptical, enter here the reference frequency for the plane wave excitation. This field only applies to elliptical and circular polarized plane wave excitations.

参考频率：如果所选类型为圆形或椭圆形，请在此处输入平面波激励的参考频率。该场仅适用于椭圆和圆极化平面波激励。

Phase Difference: Enter here the phase difference between the two excitation vectors for

elliptical polarized plane waves. This field only applies to elliptical polarized plane wave excitations.

相位差：在这里输入椭圆极化平面波的两个激发矢量之间的相位差。该场仅适用于椭圆极化平面波激励。

Left / Right: Select here between left circular polarized or right circular polarized plane wave excitation. These settings only apply to circular polarized plane wave excitations. The respective radio buttons are only visible if a circular polarization is selected.

左/右：在左圆极化或右圆极化平面波激励之间选择。这些设置仅适用于圆极化平面波激励。仅当选择圆极化时，相应的单选按钮才可见。

Axial ratio: Defines the ratio between the amplitudes of the two electric field vectors used for elliptical polarization. This field only applies to elliptical polarized plane wave excitations.

轴向比：定义用于椭圆极化的两个电场矢量的振幅之比。该场仅适用于椭圆极化平面波激励。Propagation normal frame

传播法向帧

X/Y/Z: Here you can specify the propagation vector by entering valid expressions for the X/Y/Z component.

x/y/z：在这里，您可以通过输入x/y/z组件的有效表达式来指定传播向量。

Electric field vector frame

电场矢量框架

X/Y/Z: Specify the electric field vector components in V/m. The electric field vector must be orthogonal to the propagation normal. If this is not the case, the user is asked if the electric field vector components should be automatically orthogonalized.

x/y/z：以v/m为单位指定电场矢量分量。电场矢量必须与传播法向正交。——这是由于电磁波的性质决定的：电磁波传播方向与电场和磁场方向垂直。

如果不是这样，用户会被询问电场矢量分量是否应该自动正交化。

Please note that the input signal of an excited plane wave is normalized due to the defined absolute value of the electric field vector.

请注意，激发平面波的输入信号由于电场矢量的定义绝对值而归一化。

For a circular polarization, the length of the electric field vector defines the amplitude of the signal. For an elliptical polarization, the length and the direction of the electric field vector define the length and direction of the major axis. The length of the minor axis is computed from the axial ratio given by the user

对于圆极化，电场矢量的长度定义了信号的振幅。对于椭圆极化，电场矢量的长度和方向定义了长轴的长度和方向。短轴的长度是根据用户给出的轴比计算的。

The definition of the plane wave is visualized by a red plane. Colored arrows indicate the propagation direction as well as the electric and magnetic field vectors.

平面波的定义用一个红色平面来表示。彩色箭头表示传播方向以及电场和磁场矢量。Here the electric field vector of a plane wave is hitting a metallic sphere. Correspondent to the picture on the left side the plane wave is excited with an electric field vector in z-direction and a propagation normal (1,1,0).

在这里，平面波的电场矢量正撞击金属球。与左侧图片相对应，平面波在Z方向的电场矢量和传播法向（1,1,0）激发。

Decoupling plane frame

去耦平面框

If a structure contains metallic walls dividing the calculation domain into two separate parts, it is necessary to consider a decoupling plane in the plane wave

calculation. Note that this decoupling plane needs to be aligned with the Cartesian coordinate axes (see also: Plane Wave Overview ). 如果一个结构包含将计算域划分为两个独立部分的金属壁，则在平面波计算中需要考虑一个去耦平面。请注意，该去耦平面需要与笛卡尔坐标轴对齐（另请参见：平面波概述）。Automatic detection: The selection of this checkbox will automatically detect possible metallic walls and consequently activate the corresponding decoupling plane. This detection procedure only recognizes a metallic plane with no discontinuities at the boundary of the calculation domain. If the decoupling plane is not found, you may specify a decoupling plane using the input fields below.

自动检测：选中此复选框将自动检测可能的金属壁，从而激活相应的去耦平面。该检测程序只识别计算域边界处没有不连续的金属平面。如果未找到去耦平面，可以使用下面的输入字段指定去耦平面。

Use decoupling plane: This checkbox is only available if the automatic detection is deselected. Activate here a user-defined decoupling plane defined by the following input fields.

使用去耦平面：此复选框仅在取消选择自动检测时可用。在此激活由以下输入字段定义的用户定义的去耦平面。

Position: Set the position of the decoupling plane with respect to the plane normal by entering a valid expression. If the metal plane has a finite thickness, specify the surface of reflection.

位置：通过输入有效表达式，设置去耦平面相对于平面法向的位置。如果金属平面的厚度有限，请指定反射面。

Plane normal: Select a normal direction for the decoupling plane. Decoupling planes need to be aligned with the coordinate axes, so you can choose among X, Y or Z.

平面法向：为去耦平面选择一个法向。分离平面需要与坐标轴对齐，因此可以在X、Y或Z 之间进行选择。