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单极Custom

Create customized monopole antenna

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描述

The单极Custom对象使用该形状创建任何形状的单极散热器天线。形状班级。地面可以采用任何形状。您可以创建任何任意形状的单极，并为场，表面和端口特征分析。单极天线具有简单的结构，并提供具有宽阻抗带宽的全向辐射模式。单极天线通常用于机载和地面通信系统。

定制的单极天线几何形状，默认辐射模式和阻抗图。

Creation

Syntax

蚂蚁=垄断
蚂蚁=垄断(Name,Value)

描述

example

蚂蚁=垄断creates a default monopole antenna with a square radiator and a circular ground plane. The feed point is at the origin in thexy- 飞机。默认天线以1.24 GHz的工作频率共鸣。

蚂蚁=垄断(Name,Value)setsProperties使用一个或多个名称值对。例如，ant = monopoycustom（'radiatortilt'，90）在90度上创建具有散热器倾斜角的单极天线z-axis.

Properties

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Type of radiator, specified as an天线object. You can specify any shape for the radiator. The feed strip is a part of the radiator. By default, the radiator is square in shape with a side length of 40e-3 meters. The feed strip is 2e-3 meters in length and 2.5e-3 meters in width at the edge of the radiator.

地面平面的类型，指定为天线object. You can specify any shape for the ground plane. By default, the ground plane is circular in shape with a radius of 150e-3 meters.

Signed distance from the center along the length and the width of the ground plane, specified as a two-element vector in meters.

例子：'FeedOffset',[2 1]

Data Types:双倍的

散热器的倾斜角，指定为标量。

Data Types:双倍的

Type of the metal used as a conductor, specified as a metal material object. You can choose any metal from theMetalCatalogor specify a metal of your choice. For more information, see金属. For more information on metal conductor meshing, seeMeshing.

例子：m =金属（'铜'）;“指挥”，

例子：m =金属（'铜'）;ant.conductor = m

Tilt angle of the antenna, specified as a scalar or vector with each element unit in degrees. For more information, seeRotate Antennas and Arrays.

例子：“倾斜”，90

例子：蚂蚁.Tilt = 90

例子：'Tilt',[90 90],'TiltAxis',[0 1 0;0 1 1]tilts the antenna at 90 degrees about the two axes defined by the vectors.

Data Types:双倍的

Tilt axis of the antenna, specified as:

  • 笛卡尔坐标的三元素向量为米。在这种情况下，向量中的每个坐标都始于原点，并沿着指定点位于x- ，，y- ，，andz- 轴。

  • Two points in space, each specified as three-element vectors of Cartesian coordinates. In this case, the antenna rotates around the line joining the two points in space.

  • A string input describing simple rotations around one of the principal axes, 'x'，'y'， 或者 'z'.

有关更多信息，请参阅Rotate Antennas and Arrays.

例子：'tiltaxis'，[0 1 0]

例子：'tiltaxis'，[0 0 0; 0 1 0]

例子：ant.tiltaxis ='z'

集结元素added to the antenna feed, specified as a块状object. You can add a load anywhere on the surface of the antenna. By default, the load is at the feed. For more information, see块状.

例子：'Load',lumpedElement.块状是使用使用的对象块状.

例子：蚂蚁.Load = lumpedElement('Impedance',75)

Object Functions

show Display antenna or array structure; display shape as filled patch
axialRatio 天线的轴向比
梁宽 天线的光束宽度
charge 金属或介电天线或阵列表面的电荷分布
current Current distribution on metal or dielectric antenna or array surface
效率 Radiation efficiency of antenna
埃菲尔德 Electric and magnetic fields of antennas; Embedded electric and magnetic fields of antenna element in arrays
impedance Input impedance of antenna; scan impedance of array
网 金属或介电天线或阵列结构的网格性能
优化 使用SADEA优化器优化天线或阵列
图案 在现场查看器中显示天线辐射模式
图案Azimuth 天线或阵列的方位角图案
模式增长 Elevation pattern of antenna or array
rcs 平台，天线或阵列的计算和图雷达横截面（RCS）
returnloss Return loss of antenna; scan return loss of array
sparameters 计算天线和天线阵列对象的S参数
vswr 天线的电压站立波比

例子

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打开实时脚本

在30 cm的平方接地平面上创建一个半径为25毫米的圆盘单子，并具有0.7毫米的进料间隙。

rad =天线。'半径'，25e-3）;馈送=天线。矩形（'长度',1e-3,'宽度'，0.7e-3，...'Center',[0 -(Rad.Radius+(0.7e-3)*0.3)]); m = monopoleCustom; m.Radiator = Rad+FeedStrip; m.GroundPlane = antenna.Rectangle('长度',300e-3,'宽度'，300E-3）;

使用showfunction.

show(m);

图包含一个轴对象。带有标题垄断天线元件的轴对象包含4个类型贴片的对象。这些对象代表pec，feed。

Plot the radiation pattern of the antenna at 2.05 GHz.

p = patternplotoptions（“大小”，[-40 5]）;图案（M，2.05E9，'patternOptions'，p）;

图包含一个轴对象和类型Uicontrol的其他对象。轴对象包含4个类型贴片的对象。

参考

[1] Ammann，M。J.“方形平面单极天线。”IEE National Conference on Antennas and Propagation，卷。1999年，IEE，第37-40页。

[2] Weiner, M. “Monopole Element at the Center of a Circular Ground Plane Whose Radius Is Small or Comparable to a Wavelength.”IEEE Transactions on Antennas and Propagation，卷。35, no. 5, pp. 488–495.

[3] N. P. Agrawall，G。Kumar和K. P. Ray，“宽带平面单极天线”，IEEE Transactions on Antennas and Propagation，卷。46，不。2，第294-295页。

Version History

Introduced in R2020b

See Also

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