Abstract
Design of multiband antennas with low volume is of practical interest for the ever growing wireless communication industry. In this regard, the design of a small multi band microstrip patch antenna (MPA) for GSM900 (880{960MHz), GSM1800 (1710{1880MHz), GSM1900 (1850{1990MHz), UMTS (1920{2170MHz), LTE2300 (2305{2400MHz), and Bluetooth (2400{ 2483.5MHz) applications by using a genetic algorithm (GA) is proposed. The proposed GA method divides the overall patch area into difierent cells taking into account that cells have a small overlap area between them. This avoids optimized geometries with certain cells having only an inflnitesimal connection to the rest of the patch. Therefore, the proposed method is robust for manufacturing. A shorting pin is also included for impedance matching. GA optimization combined with flnite element method (FEM) is used to optimize the patch geometry, the feeding position and the shorting position. A prototype has been built showing good agreement with the simulated results. The optimized MPA has a footprint of 46mm £ 57mm
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