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I am given a question in which I have to find the polarization of the radiated far-zone electric fields when phi is 0 and 90. Why are the following formulas used respectively? For phi = 0 $$ E_\theta = jn\frac{kI_0le^{-jkr}}{4\pi r} cos\theta $$

For phi = 90

$$ E_\theta = jn\frac{kI_0le^{-jkr}}{4\pi r} . 1 $$

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  • \$\begingroup\$ Welcome to EE.SE - what has your own research shown and what specifically do you not understand? \$\endgroup\$ – Peter Smith Apr 1 at 13:11
  • \$\begingroup\$ @PeterSmith, sorry i wanted to find for phi 0 and 90 respectively. \$\endgroup\$ – Ahmad Qayyum Apr 1 at 13:20

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