SOLVED Numerical's - Antenna Theory - Page 6.
16) Sketch the normalized E-field and H-field patterns for a. A half-wave dipole b. A quarter-wave monopole. SOLUTION: a) b) The same as for λ/2 dipole except that the fields are zero for θ > π/2 as shown: 17) In free space, an antenna has a far zone field given by Determine the radiated power? SOLUTION: 18) At the far field, the electric field produced by antenna is Sketch the vertical pattern of the antenna. Your plot should include as many points as possible. SOLUTION: f(θ) = | cosθ cosφ | For the vertical pattern, φ = 0 which means, f(θ) = | cosθ | which is sketched below