A- What happens to the beam-width of antenna if the frequency of operation is increased? a) Beam-width will decrease of frequency b) Beam-width will increase d) Beam width may increase or decrease c) Beam-width is independent B- In ideal dipole, the field components, Ee and H, are orthogonal to each other, and they have terms, which depend on? a) e-jẞr b) sin(0) c) ΔΙ d) distance as 1/ e) all of above C-Reactive near-field region is the region immediately surrounding the antenna, it is assumed: a) r≈ 0.5 D³/ ג' b) r≈ 2D2/2 c) 0.62 D³/ ≤r ≤ 2D² d) none of all 2 D- The azimuth and elevation HPBW of normalized radiation intensity U = sin 0 sin³ are: a) HPBW(az.) 120°, HPBW(el.)=90° b) HPBW(az.)-90°, HPBW(el.)-74.93° HPBW(el.) 74.93° d) HPBW(az.) 74.930, HPBW(el.)=120° c) HPBW(az.) 120°,