Ground size of Antenna

Hi, everybody

Do you think the size of ground plane for antenna design is considerable? For example, if I design a 2.4 GHz monopole or planar inverted-F antenna, the size of ground plane should I need in practice?


Thanks in advance.

I would think at least a 1/4 wavelength in all direction from the monopole.

but i met some cases in the design of chip antenna .it always depends on so big Non-GND area around the antenna. Why ?

These chips are patch antennas. The fringing fields at the edges of the patch do the radiating. The bottom layer (ground) does not have to extend that far beyond the top layer (patch) for all of the fringing field to go from the edge of the patch to the ground.

Flatulent ,

Do you have its application notes or lecture which let me know more? thanks