QuestenaՎարժանք, որը ցույց է տալիս՝ ինչ կրկնել հաջորդիվ
Հարց 271

Why are short connections used at microwave frequencies?

  1. To increase neutralizing resistance
  2. To reduce phase shift along the connectionՃիշտ պատասխան
  3. To increase compensating capacitance
  4. To reduce noise figure

Բացատրություն

A signal takes measurable time to travel along a conductor, and at microwave frequencies a wavelength is only centimetres long. A connection of even a few centimetres becomes a significant fraction of a wavelength and introduces phase shift, so connections are kept short.

Շարունակեք այս թեստով

Սկսել վարժանքը
Հարց 271: Why are short connections used at microwave frequencies? · FCC Amateur Extra Class (Element 4) · Questena