# Linear 45 degrees polarized antenna element

조회 수: 2 (최근 30일)
Mykola Servetnyk 2018년 12월 27일
답변: Honglei Chen 2019년 1월 2일
I am trying to use phased array toolbox to generate an antenna element that under 45 degrees. If I am correct, I can generate a Y-axis polarized antenna element using
antenna1 = phased.ShortDipoleAntennaElement( 'FrequencyRange',[1,2]*1e9,'AxisDirection','Y');
I tried to check page on polarized fields, https://www.mathworks.com/help/phased/ug/polarized-fields.html and I saw that there are linear basis functions for polarization fields, for example
[0;1]
is vertical,
[1;0]
is horizontal and
1/sqrt(2)*[1;1]
is linear 45 degrees and so on.
So I'm looking for function in phased array toolbox that would let me specify polarization plane using linear basis vectors. All responses are appreciated.

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### 답변 (1개)

Honglei Chen 2019년 1월 2일
In R2018b, there is no easy way to specify a 45-degree short dipole. The easier way to achieve that is probably combine the field from a Z direction short dipole and Y direction short dipole.
If you have access to R2019a prerelease, then you can get a short dipole with 45 degree linear polarization as
ant = phased.ShortDipoleAntennaElement
ant.AxisDirection = 'Custom'
ant.CustomAxisDirection = [0;1;1]
pattern(ant,3e8)
HTH

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