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单镜

在圆形接地平面上创建单键酮天线

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Description

这单镜物体在圆形接地平面上产生单核天线。经典的单重心天线由锥体和接地平面组成。为了增加天线的带宽，您可以通过将锥与圆柱合并来修饰天线。默认情况下，单镜目的creates the modified version.

创建一个古典monocone天线(cylinder on top) using one of these methods:

  • 将天线的高度设置为等于圆锥高度和进料高度的总和。

  • 将锥高度设置为总高度和进料高度之间差的一半。然后将半径设置在孔径处的半径是连接处的两倍。

创建

句法

ant = monocone
ANT =单镜（名称，值）

Description

例子

ant= monoconecreates a monocone antenna with the feedpoint at the center of the ground plane. The default dimensions are for a resonant frequency of 3.8 GHz.

例子

ant= monocone(Name,Value)sets properties using one or more name-value pairs. For example,ANT =单核（'高度'，0.0560）creates a monocone antenna with a total height of 0.0560 meters.

特性

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Antenna radii, specified as a three-element real vector with each element unit in meters.

  • 这first element represents the narrow radius of the cone.

  • 这second element represents the radius at the junction of the cone and the cylinder.

  • 这third element represents the radius at the top of the cylinder.

Example:'Radii',[6.3300e-04 0.0546 0.0220]

Example:ant.radii = [6.3300E-04 0.0546 0.0220]

Data Types:double

天线的总高度从接地平面到天线的孔，指定为米的正标量。

Example:'Height',0.0560

Example:ant.Height = 0.0560

Data Types:double

Vertical height of the cone from the apex of the cone to the junction of the cone and the cylinder, specified as a positive scalar in meters.

Example:“ Coneheight”，0.02250

Example:ant.ConeHeight = 0.02250

Data Types:double

锥体和接地平面之间的间隙，以米为正标准量。

Example:“进料”，0.0034

Example:ant.feedheight = 0.0034

Data Types:double

饲料的宽度，指定为米的正标量。

Example:'FeedWidth',0.0050

Example:ant.feedwidth = 0.0050

Data Types:double

Radius of the ground plane, specified as a positive scalar in meters.

Example:'GroundPlaneRadius',0.0050

Example:ant.GroundPlaneRadius = 0.050

Data Types:double

用作导体的金属类型，指定为金属材料对象。您可以从中选择任何金属金属猫或指定您选择的金属。有关更多信息，请参阅metal。有关金属导体网被融合的更多信息，请参阅网res。

Example:m = metal('Copper'); 'Conductor',m

Example:m = metal('Copper'); ant.Conductor = m

添加到天线饲料中的总元素，指定为lumpedElement目的。您可以在天线表面的任何地方添加负载。默认情况下，负载在提要处。有关更多信息，请参阅lumpedElement。

Example:“负载”，块状，，，，wherelumpedElement将载荷添加到天线饲料中。

Example:ant.load = lumpedelement（'阻抗'，75）

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

Example:'Tilt',90

Example:ant.tilt = 90

Example:“倾斜”，[90 90]，，，，'tiltaxis'，[0 1 0; 0 1 1]向量定义的两个轴的倾斜天线在90度下于90度。

笔记

这wireStack天线对象仅接受DOT方法来更改其属性。

Data Types:double

天线的倾斜轴，指定为：

  • 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从原点开始，并沿着x，y-和z轴上的指定点位于。

  • 空间中的两个点，每个点指定为笛卡尔坐标的三元素向量。在这种情况下，天线围绕线路旋转，将两个点连接在太空中。

  • A string input describing simple rotations around one of the principal axes, 'X', 'Y', or 'Z'.

有关更多信息，请参阅Rotate Antennas and Arrays。

Example:'TiltAxis',[0 1 0]

Example:'TiltAxis',[0 0 0;0 1 0]

Example:ant.TiltAxis = 'Z'

笔记

这wireStack天线对象仅接受DOT方法来更改其属性。

Data Types:double

Object Functions

coneangle2size Calculates equivalent cone height, broad radius, and narrow radius for cone
节目 显示天线或阵列结构；显示形状作为填充补丁
轴突 Axial ratio of antenna
beamwidth Beamwidth of antenna
收费 Charge distribution on metal or dielectric antenna or array surface
当前的 金属或介电天线或阵列表面上的电流分布
design Design prototype antenna or arrays for resonance around specified frequency
efficiency 天线的辐射效率
EHfields 天线的电场和磁场；阵列中天线元件的嵌入式电场和磁场
阻抗 天线的输入阻抗；扫描阵列的阻抗
mesh Mesh properties of metal or dielectric antenna or array structure
meshconfig 更改天线结构的网格模式
optimize Optimize antenna or array using SADEA optimizer
pattern Radiation pattern and phase of antenna or array; Embedded pattern of antenna element in array
patternazimuth Azimuth pattern of antenna or array
patternElevation 天线或阵列的高程图案
RCS Calculate and plot radar cross section (RCS) of platform, antenna, or array
returnLoss Return loss of antenna; scan return loss of array
Sparameters Calculate S-parameter for antenna and antenna array objects
VSWR Voltage standing wave ratio of antenna

Examples

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Open Live Script

Create and view a default monocone antenna.

ant = monocone
ant = monocone with properties: Radii: [5.0000e-04 0.0110 0.0110] GroundPlaneRadius: 0.0325 ConeHeight: 0.0115 Height: 0.0250 FeedHeight: 5.0000e-04 FeedWidth: 5.0000e-04 Conductor: [1x1 metal] Tilt: 0 TiltAxis: [1 0 0] Load: [1x1 lumpedElement]
显示（ANT）

图包含一个轴对象。这axes object with title monocone antenna element contains 4 objects of type patch, surface. These objects represent PEC, feed.

Open Live Script

Create a monocone antenna with an infinite ground plane.

ANT =单核；ant.groundplaneradius = inf;显示（ANT）

图包含一个轴对象。无限接地平面上带有标题单镜的轴对象包含4个类型贴片的对象。这些物体代表PEC，饲料，无限的地面。

为给定频率绘制单核天线的辐射图。

pattern(ant,3.94e9)

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。该物体代表无限的地面。

Open Live Script

Create a classical monocone antenna by setting the total height of the antenna to equal the sum of cone height and feed height.

ANT =单核；ant.Height = ant.ConeHeight+ant.FeedHeight; show(ant)

图包含一个轴对象。这axes object with title monocone antenna element contains 4 objects of type patch, surface. These objects represent PEC, feed.

Calculate antenna impedance over the given frequency span.

阻抗(ant,(1e9:0.1e9:6e9))

图包含一个轴对象。这axes object with title Impedance contains 2 objects of type line. These objects represent Resistance, Reactance.

References

[1] McDonald，James L.和Dejan S. Filipovic。“在单镜天线的带宽上。”IEEE关于天线和繁殖的交易56, no. 4 (April 2008): 1196–1201. https://doi.org/10.1109/TAP.2008.919226.

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