Axial ratio of microstrip antenna

Axial ratio concerns on circular antennas. linearly polarized antennas doesnt need it. if u r designing circular patch antenna you need low axial ratio (0-4 or less more up to 6).

axial ratio is the measure of polarization characteristics of your antenna.
it should be infinity or very high for linear polarized antenna , 1 for circular polarized antenna and in between 1 and infinity for elliptically polarized antenna

Axial ratio= major axis ÷minor axis

Hi besus,

Refer the following i think it'll be useful.

https://www.edaboard.com/viewtopic.php?t=303613

regards,
balaguru.