73·STUDY

Extra exam question E9B05

Subelement E9, ANTENNAS AND TRANSMISSION LINES· Group E9B

E9B05

What type of antenna pattern is shown in Figure E9-2?

  • A.Elevation (correct answer)
  • B.Azimuth
  • C.Near field
  • D.Polarization

WhyFigure E9-2 shows an elevation antenna pattern. Figure E9-2 is an elevation pattern, a vertical-plane slice showing how radiated signal strength varies with elevation angle from the horizon (0 degrees) up through the zenith (90 degrees) and back down to the horizon in the opposite direction (180 degrees), the effect of ground reflection interference creating the multiple lobes visible, answer A. It isn't an azimuth pattern (a horizontal-plane slice), isn't a near-field plot, and isn't a polarization pattern, those describe different kinds of antenna characterization entirely.

Polar plot E9-2 showing an antenna's elevation radiation pattern, used to read the front-to-back ratio and the elevation angle of peak response.

Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.

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