DGS BASED MIMO MICROSTRIP ANTENNA FOR WIRELESS APPLICATIONS

摘要

An octagonal sp lit ring slot DGS (Defected Ground Structure) based MIMO (Multiple Input M ultiple Output) m icrostripantenna has been presented in this paper. Four ports rectangular patch elements, which are electrically sm all size 62.8 x6 0 x1 .6 mm3, with FR-4 substrate of dielectric constant 4.4 are proposed in the M ultiple Input Multiple Output antenna.The ground plane, which is on inadequate ground structure (DGS) having a number of octagonal sp lit ring slot DGS[OSRSDGS) windows are organised in H shape under the patch. The High-Frequency Structure Sim ulator [HFSS) software isused to simulate the MIMO antenna. The proposed antenna were simulated, fabricated, and measured. The proposedMIMO antenno resonates of 5.9 GHz frequency with -17.9 dB isolation with an overall bandwidth of 369 MHz. Theproposed MIMO antenna results were explained in terms of reflection coefficients, data rote. Mutual CouplingCoefficients (MCC)f and peak gain along with radiation pattern. The simulated and measured results give goodagreement beiween them. The detail of the ontenno design and results ore presented and discussed.