yadin wrote:
> hi am doing a polar plot of the radiation pattern of an antenna.
> the polar plots represents the value of the power in dB's and the dB
> go from -40dB to 0dB
Add 40 so that the range goes from 0 to 40, then
plot that to an appropriate scale.
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Greg
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"Erik Max Francis" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> yadin wrote:
>
>> hi am doing a polar plot of the radiation pattern of an antenna.
>> the polar plots represents the value of the power in dB's and the dB
>> go from -40dB to 0dB
>> as the angle theta changes from 0
.
> polar(power,theta)
> title.?
> how can i show the step on the polar plot plot(-40, -30,-20,-10,0)
>
I think you need to consider why you want to plot negative values. The
decibel scales are actually logarithmic ie all power is actually
positive. Zero power corresponds to -infin
yadin wrote:
> hi am doing a polar plot of the radiation pattern of an antenna.
> the polar plots represents the value of the power in dB's and the dB
> go from -40dB to 0dB
> as the angle theta changes from 0 to 2*pi rads
> the polar plot in python goes with positive values
> how can i solve this
high i think everybody has seen dB radiation pattern plots...
well those are done with negative polar plots ...the values of the
magnitude in the axes are
NEGATIVE values...
but i can find a polar plot command that those negative plots not in
python not even in matlab
the polar plots represents th
hi am doing a polar plot of the radiation pattern of an antenna.
the polar plots represents the value of the power in dB's and the dB
go from -40dB to 0dB
as the angle theta changes from 0 to 2*pi rads
the polar plot in python goes with positive values
how can i solve this problem
rough example
exa
