Vertical Polarization of loop antenna

[pankajdudulwar]

I want to make my rectangular loop antenna vertically polarized in what way I should mount it on the PCB. IF I keep the rectangular loop parallel to the ground then how I can make the polarization vertical. Please see the attached figure. Also please advice me where I should keep the feed.

Thanking in advance,

 

[FvM]

Viewn in transmission direction, E- and H-field are perpendicular to each other. A loop with horizontal surface can only produce horizontal polarized E-field.

 

[biff44]

Yep, that is what I think too. If you put a loop in the same horizontal plane of the printed circuit board, it will be horizontal Electric field polarized.

You have a few choices:
mount your board on end, so it is vertical
Make part of the loop on the horizontal board, and solder on a "U" shaped bar to complete the loop
Use a quarter wave or base loaded whip antenna sticking out of the horizontal board

 

[babyface_chz]

If you want to increase the power of the vertical polarization,
adding the vertical height or thickness, ex:helical antenna...
Where : the loop is located on horizontal plane.

 

[vfone]

-Small Loop antenna (Circumference << λ) in Horizontal position emits Horizontally polarized waves.
-Small Loop antenna in Vertical position emits Vertically polarized waves.

-Full wavelength Loop antenna (Circumference = λ) with feed point at center horizontal side, produces Horizontally polarized waves.
-Full wavelength Loop antenna with feed point at center vertical side, produces Vertically polarized waves.