# Would a phase compensated sinusoidally spaced folded dipole present less noise to a receiver?

I am attempting to design an antenna similar to a TTFD, double zepp or array of end fed wires, with a sinusoidal, with the period of the wavelength, spacing that causes additive waves on the target frequency(assume proper phase alignment,180 degrees, and a constant velocity factor for this question).

Assume the image is a top down view of the wires forming perfect sine waves :)

The feed point locations should be at +90 and -90 degrees offset.

I barking up the wrong tree?

The thought process behind this: Invert the phase of half of the signal to null the desired frequency, and correct the phase disparity through the physical spacing of the wires.

This design would probably be very low bandwidth and thus impractical for most uses, but would it work at all? And what about noise reduction?

• Could you clarify your question by editing it to include a diagram of what your planned antenna design is, and which part has the ‘sinusoidal spacing’? Apr 20 '20 at 0:06
• Welcome to ham.stackexchange.com! Apr 20 '20 at 2:47
• Do you meant that, rather than being linear in three-dimensional space, the plane containing the parallel wires of the folded dipole follows a sinuous path described by a sinusoid? An antenna fitting this description was popular for FM broadcast reception a few decades ago. Apr 20 '20 at 8:29
• Hello and welcome. Can you explain in more detail what you're trying to achieve in the first place? The description doesn't sound like a folded dipole - "sinusoidal spacing" doesn't ring a bell (or appear on google). Nothing wrong with trying to make the antenna better reject unwanted frequencies if that's your goal, but a folded dipole is the not very good for that, being so wide band and well matched. Apr 20 '20 at 14:57
• @tomnexus, Thank you and every one for the welcome. I think this may end up in the crazy design pile, but I thought I would try to ask first. Apr 21 '20 at 23:13