Extra exam question E9A08
Subelement E9, ANTENNAS AND TRANSMISSION LINES· Group E9A
E9A08
Which frequency band has the smallest first Fresnel zone?
- A.5.8 GHz (correct answer)
- B.3.4 GHz
- C.2.4 GHz
- D.900 MHz
WhyAmong these frequency bands, 5.8 GHz has the smallest first Fresnel zone. The first Fresnel zone's size shrinks as frequency rises (wavelength shortens), so among the bands listed, 5.8 GHz, the highest frequency, has the smallest first Fresnel zone, answer A. 3.4 GHz, 2.4 GHz, and 900 MHz are all lower frequencies with correspondingly longer wavelengths and larger first Fresnel zones.
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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