If a transmission line with a characteristic impedance of 50 ohms feeds a folded dipole with a feed point impedance close to 300 ohms, what impedance transformation ratio is needed to match the two?

Why

To match a 50 ohm line to a 300 ohm antenna, you need to transform the impedance by dividing the higher value by the lower one, which gives 300 divided by 50 equal to 6. The full explanation — and one for every question — is in Pro.

Practise this section

Feedlines and antenna systems is section B-006 of the Basic exam: Getting the signal out: antennas, feedlines, SWR, baluns, matching, and why antenna length depends on frequency.

Cette question en français · All B-006 questions