Electromagnetic Field Theory

Q1: Radiation resistance of half-wave dipole (λ/2) antenna is in free space

A 73 Ω

B
120 p

C 36.5 Ω

D 70 Ω

ANS:A - 73 Ω

Radiation resistance is mathematically given by: Rr = 80*(pi)*(pi)*(dl/wavelenth)^2.

Here dl = (wavelength/2).



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