Polarisation of a microstrip patch antenna

[Divya.S]

Hi.,How to find out if a linearly polarised microstrip patch antenna is vertically polarised or horizontally polarised?

Thanks

 

[jeeudr]

Vertical and horizontal are just labels given to differentiate between two orthogonal types of linear polarization.

It is up to define your axes in any problem. You could call a microstrip patch to be horizontally polarized when viewing from a top angle like this

(image credit:https://www.antenna-theory.com/antennas/patches/antenna.php)

However, rotate your viewing angle by 90 degrees, then you call it vertical polarization.

To give an analogy, it is like asking to differentiate between X and Y axis. It is completely up to you to pick one direction (for say X) and then the orthogonal (Y) will be in the other direction.

 

[per_lube]

it's just a notation...

Usually this is how it is named as vertical or horizontal polarized....

If the antenna E-field is perpendicular to the ground, it is said vertical polarization...
if the antenna E-field is parallel to the ground, it is said horizontal polarization...

Since it's just a notation, you can choose what ever way as the horizontal or vertical... IF the antenna is rotated, polarization changes... just two names given to identify two common uses of polarization