UWB Microstrip Patch Antenna

Hi ,
I am working on design an UWB microstrip patch antenna using Fork-like feed techniqe
Can anybody give me some help about that type?
and how can i enhance the bandwidth of the antenna to operate in UWB range?

Thanks.

Hi,
No one can help me


Eng.Mohamed

Hi,
Maybe you will find some help:
Design of Ultra Wideband Microstrip Antenna h**p://ieeexplore.ieee.org/Xplore/login.jsp?url=http%3A%2F%2Fieeexplore.ieee.org%2Fi el5%2F11208%2F36089%2F01711426.pdf%3Farnumber%3D17 11426&authDecision=-203
Did you checkd pls some other èdaboard topics too?:
UWB antenna simulation with CST and HFSS, w*w.edaboard.com/ftopic355250.html
K.

Hi,
I'm currently designing a UWB patch antenna using CST MWS. I got all the results i want such as S11,radiation pattern etc. The line impedance of my antenna also got 50 ohms. But what is confusing me is the smith chart not all 50 ohms at my desired frequency (3.1 - 10.6 GHz). Is smith chart still important since i already got 50 ohms at line impedance? And what would happen to the fabricated antenna if the smith chart not 50 ohms?