DESIGN OF MULTIBAND ANTENNAS LOADED WITH ARRAYS OF CSRR AND CIRCULAR HEAD DUMBBELL STRUCTURE

Abstract

This research focus on two aims, the first one is design a multi-band rectangular Microstrip Patch Antenna with spacious bandwidth by using Complementary Split Ring Resonator (CSRR) beside the Rectangular Ruler Patches (RRPs) and the second is improvement the performance and bandwidth for WiMAX and GPS applications by using Circular Head Dumbbell Structure CHDS beside Circular Ring Patches CRPs. A patch antenna is designed and simulated for 4.66 and 5.61 GHz. Two substrates of FR-4 lossy are utilized with 4.3 dielectric constant, 1.4mm and 0.2mm thickness. The shape used for conventional patch antenna is rectangular with a central feed source. For metamaterial antenna CSRR and CHDS are used. RRPs and CRPs that are used with metamaterial behave like Reactive Impedance surface RIS. The conventional antenna operates at a frequency band of 4.66 GHz and 5.61 GHz, while the designed antenna with CSRR generates four wide band resonant modes at 4.36, 4.7, 5.6 and 5.9 GHz, therefore considered as a multiuse antenna. CHDS appears fixed behavior with all RIS used to confirm its importance in WiMAX and GPS applications. Computer Simulation Technology CST EM simulator is used for this survey

Keywords

• CSRR,RRPs,CHDS,CRPs,CST

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