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axialRatio

轴向比率of antenna

所有的页面崩溃

Syntax

axialRatio(antenna,frequency,azimuth,elevation)
ar = axialRatio(antenna,frequency,azimuth,elevation)

Description

example

axialRatio(antenna,frequency,azimuth,elevation)plots axial ratio of an antenna over a specified frequency, and in the direction specified byazimuthandelevation. Any one among frequency, azimuth, or elevation values must be scalar. If only one of the values are scalar, the plot is 3-D. If two values are scalar, the plot is 2-D.

example

ar= axialRatio(antenna,frequency,azimuth,elevation)returns the axial ratio of an antenna, over the specified frequency, and in the direction specified byazimuthandelevation.

Examples

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Open Live Script

Calculate the axial ratio of an equiangular spiral antenna at azimuth=0 and elevation=0.

s = spiralEquiangular; ar = axialRatio(s,3e9,0,0)
ar = Inf
Open Live Script

Create a cloverleaf antenna.

cl = cloverleaf; show(cl);

Figure contains an axes. The axes with title cloverleaf antenna element contains 10 objects of type patch, surface. These objects represent PEC, feed.

Plot the axial ratio of the antenna from 5 GHz to 6 GHz.

freq = linspace(5e9,6e9,101); axialRatio(cl,freq,0,0);

Figure contains an axes. The axes with title Axial ratio contains an object of type line.

The axial ratio plot shows that the antenna supports circular polarization over the entire frequency range.

Input Arguments

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Antenna object, specified as an object.

Frequency used to calculate axial ratio, specified as a scalar or vector with each element in Hz.

Example:70e6

Data Types:double

Azimuth angle of antenna, specified as a scalar or vector with each element in degrees.

Example:0

Data Types:double

Elevation angle of antenna, specified as a scalar or vector with each element in degrees.

Example:0

Data Types:double

Output Arguments

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轴向比率of antenna, returned as a scalar in dB.

See Also

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Introduced in R2015a

Antenna Toolbox Documentation

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Hybrid Beamforming for Massive MIMO Phased Array Systems

Hybrid Beamforming for Massive MIMO Phased Array Systems

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