You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
The Feb 2025 Radioddity Giveaway Results are In! Click Here to see who won!

Reply to thread

Message

Hello everyone, does anyone explain?

why does 1/4 wavelength have to have a ground plane and 1/2 doesn't?

I know that an antenna that has half a wavelength does not need the ground plane (example a dipole antenna) and when using a wavelength of 1/4 it is usually necessary to have the ground plane (planar antennas [PCB]).
My problem: I can't understand why we need to use a ground plane at 1/4 wavelength and 1/2 wavelength not needed.

Please could also provide source of relevant information, examples, books or scientific article, something like that.

Regarding the subject

[QUOTE="LUFER, post: 706419, member: 57144"] Hello everyone, does anyone explain? why does 1/4 wavelength have to have a ground plane and 1/2 doesn't? I know that an antenna that has half a wavelength does not need the ground plane (example a dipole antenna) and when using a wavelength of 1/4 it is usually necessary to have the ground plane (planar antennas [PCB]). My problem: I can't understand why we need to use a ground plane at 1/4 wavelength and 1/2 wavelength not needed. Please could also provide source of relevant information, examples, books or scientific article, something like that. Regarding the subject [/QUOTE]

Top Bottom