Joined: 31 Jan 2011
|Posted: Fri Mar 04, 2011 10:33 am Post subject: Positive Radiation Efficiency
|I simulated a PIFA antenna in CST microwave studio over a bandwidth . At some frequency points i get a positive radiation efficiency .
Freq (Mhz) Radiation Eff.
160 0.49 (111%)
162 0.06 (101%)
165 -1.92 (65%)
My thinking is either at frequency the mesh might not be optimum and there software errs in calculating radiation efficiency .
Let me know your thoughts if you ever encountered such problem.