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    Total Radiated power (TRP) equation

    Hello all,

    I wanted some clarification regarding the addition used in the discrete form of the TRP equation (used in anechoic chambers, see image below).
    Click image for larger version. 

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    Does the EIRP or Gain addition is a vector addition?
    I think it should be, althogh the equation representation does not look like a vector addition.
    As much as I understnd, the addition should be : SQRT(EIRP(THETA)^2+EIRP(PHI)^2).

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    Re: Total Radiated power (TRP) equation

    Found this:
    "In practice, the total EIRP will likely be measured at each sample point by measuring its two
    orthogonally polarized components, EIRPθ (θ , φ) and EIRPφ (θ , φ). To accommodate this
    measurement practicality, we can split the radiation intensity at each angle into two
    contributions, one from each polarization (power in independent components simply adds)"



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    Re: Total Radiated power (TRP) equation

    Good.

    You found answers to your own question.way to go!

    Regards
    Rotmanlens



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    Re: Total Radiated power (TRP) equation

    Yes, I waited but no one answered. but still there is a question, why?
    To the best of my knowledge the E field is a vector which is projected on to the two orthogonal θ and φ axis.
    So, if this is the case the vector addition of this two projection will give the total E field and not a scalar addition of them.



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    Re: Total Radiated power (TRP) equation

    Found the answer. vector addition is really needed for the E field, but it can be shown that the power is a scalar addition of each component of the E field.



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