QuestenaՎարժանք, որը ցույց է տալիս՝ ինչ կրկնել հաջորդիվ
Հարց 379

How does antenna gain in dBi compare to gain stated in dBd for the same antenna?

  1. Gain in dBi is 2.15 dB lower
  2. Gain in dBi is 2.15 dB higherՃիշտ պատասխան
  3. Gain in dBd is 1.25 dBd lower
  4. Gain in dBd is 1.25 dBd higher

Բացատրություն

dBd is referenced to a half-wave dipole, which itself has 2.15 dB of gain over an isotropic radiator, so the same antenna's gain figure is 2.15 dB larger when expressed in dBi.

Շարունակեք այս թեստով

Սկսել վարժանքը
Հարց 379: How does antenna gain in dBi compare to gain stated in dBd… · FCC General Class (Element 3) · Questena