Beamwidth of CP microstrip antenna

hi,

I don't know how to make the beamwidth a CP microstrip antenna more wider.
Can you tell me ?

Thanks very much !

hello,

wider than what?. In any case, to make the beamwidth wider you have to make the antenna smaller. to do this you can choose a dielectric substrate of larger permittivity, which makes the antenna to be electrically smaller.

be careful because this heigher eps makes the quality factor of your antenna larger, which means that the input bandwith is narrower!

regards

I want to make beamwidth more wider than normal.
And I think need change it's shape of a CP MS-antenna.
Which shape is better?

Thanks