The magnetic vector potential radiated from a dipole antenna is calculated to be A era, where K is an overall constant factor. Which option below gives the radial component (in spherical polar coordinates) of this vector function correctly? Conventions for spherical polar coordinates are to be taken as given in our textbook (Balanis, Antenna Theory). Select one: O-ersin(0) O O O e e -je cos(0) cos() cos(0) sin (0) sin()
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