shak80
Newbie level 3
Hello all.
i am facing some problems in estimating radiation efficiency of a proximity coupled patch antenna. I am using a lumped port excitation.
The problem:
The radiation efficiency reduces as i increase the dimensions of my radiation box!! It is around 80% when the box just fits the patch structure along x- and y-axis. And it reduces to 30% if it is expanded.
Any idea why?
Thanks!
i am facing some problems in estimating radiation efficiency of a proximity coupled patch antenna. I am using a lumped port excitation.
The problem:
The radiation efficiency reduces as i increase the dimensions of my radiation box!! It is around 80% when the box just fits the patch structure along x- and y-axis. And it reduces to 30% if it is expanded.
Any idea why?
Thanks!