What other antenna will produce a similar pattern?

Posted by: Pdfprep Category: 200-355 Tags: , ,

An engineer is seeing a pattern closest to that of an Isotropic Radiator.

What other antenna will produce a similar pattern?
A . 5 dBi patch
B . 13.5 dBi Yagi
C . 2.2 dBi omni
D . 21 dBi parabolic

Answer: C