we derived far-field region electric and magnetic field expressions for finite-length dipoles centered at the origin...

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we derived far-field region electric and magnetic field expressions for finite-length dipoles centered at the origin and oriented along the z-axis with sinusoidal current distribution given by liz) = dowinal-k) -assa ] I (2) where is the length of the dipole. Suppose instead we have a finite-length dipole with constant current density I (2) = Io. 1. Derive expressions for far-field electric and magnetic fields 2. Calculate directivity, effective aperture area and radiation resistance when I = 3. Plot the normalized power pattern in dB (1 = X/2) 4. What is the angle at which maximum directivity occurs? 5. How does the power pattern and directivity compare to that of a half-wave dipole with sinusoidal current distribution? Comment on your results. Suggestion: overlay the power patterns of the two antennas on the same figure. 1/22 we derived far-field region electric and magnetic field expressions for finite-length dipoles centered at the origin and oriented along the z-axis with sinusoidal current distribution given by liz) = dowinal-k) -assa ] I (2) where is the length of the dipole. Suppose instead we have a finite-length dipole with constant current density I (2) = Io. 1. Derive expressions for far-field electric and magnetic fields 2. Calculate directivity, effective aperture area and radiation resistance when I = 3. Plot the normalized power pattern in dB (1 = X/2) 4. What is the angle at which maximum directivity occurs? 5. How does the power pattern and directivity compare to that of a half-wave dipole with sinusoidal current distribution? Comment on your results. Suggestion: overlay the power patterns of the two antennas on the same figure. 1/22