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The purposes of this work is the design and optimization of a new form of microstrip cardioid patch monopole antenna with frequency-notched behavior intended to reject the 5-6 GHz frequency band for WLAN/WiMAX compatibility purposes. In comparison to the previous monopole structures with similar methods, the miniaturized antenna dimension is only about 25×25× 1mm3, which is 15 times smaller than the previous proposed design. This work makes use of a analysis method (the Multipurpose Analysis Method) for microstrip design which features the use of artificial ports in a Finite Element Method analysis in order to fast evaluate several configurations, for the design of a frequency notched microstrip Ultra Wide Band monopole antenna. The measured bandwidth of the realized antenna with optimized parameters is from 2.5 to 11 GHz (4.4:1, 126%) for VSWR<; 2.
Date of Conference: 4-6 Dec. 2010