(ask) effect of patch-shaped of antenna

[suryanadev]

dear all
can anyone tell me what is the relationship between patch-shaped of monopole antenna and bandwidth?
what is the best patch shaped to make an ultra wideband antenna?
thanks you

 

[vfone]

Just changing the shape of the simple patch antenna would not help too much improving the BW. You have to add some slots like in this example:

https://www.jpier.org/PIERC/pierc14/10.10050512.pdf