can we guess radiation pattern of patch antenna by looking to its structure

[kartikkhurana]

hi all
can we guess radiation pattern of patch antenna by looking to its structure
regards kartik

 

[volker@muehlhaus]

Single patch or patch array?

The pattern for a single patch is known, so why guess?

 

[kartikkhurana]

patch according to geometry if i have ground on back and do not have ground in back

 

[jiripolivka]

Guessing requires experience. Models were created to help but they often fail. Use real testing, on an open-space test range is best.

 

[volker@muehlhaus]

patch according to geometry if i have ground on back and do not have ground in back

Maybe I misunderstand your question, but what do you mean with "no ground in the back"? Patch antennas always have a patch with ground. Metal strip without ground would be more like a monopole.

 

[kartikkhurana]

as you said that "Metal strip without ground would be more like a monopole."
what exactly we can say antenna is monopole
a cpw feed antenna has its ground plane in front
but a microstrip line fed has ground plane in back
what will be difference in radiation pattern

 

[volker@muehlhaus]

Monopole is what you see here in the left picture (a)
https://nptel.ac.in/courses/117103065/modules/chap7/flash/f17.gif

For the antenna, it makes no difference if the ground is from microstrip or CPW feed.

 

[kartikkhurana]

can u explain the radiation pattern of antenna