Abstract- A novel design and miniaturize antenna has been
proposed and analyzed for Ultra-Wideband ( UWB) application
with integration of Multi-I nput Multi-Output (MIMO)
technique. The configuration study is made on two symmetrical
designs with minimum inter element spacing of 53 mm on the
same negative Taconic substrate. Both elements have tree shape
radiating element consists of seven small circles surrounding
single circle. The tree-antenna ofMIMO (OO_R), MIMO (1800-R)
and MIMO (OO-U) with different element orientation have been
studied towards radiation efficiency performance. All designs
and simulations are carried out by CST Microwave Studio. The
proposed antenna is examined both numerically and
experimentally.