earticle

영어

This paper presents a frequency reconfigurable inverted circular patch antenna with U-slot. The incorporation of U-slot in the circular patch provides a wide impedance bandwidth than conventional patch antenna. By introducing shorts at appropriate position on U-slot and on feed, antenna can be made resonant at two frequency bands (1.80GHz-1.98GHz) and (2.10GHz-2.68GHz) in two modes. The proposed antenna not only avoid the interference problem faced in fixed dual band antenna but at the same time provides a good gain of nearly 8 dB in both mode of operation. The prototype of optimized antenna is fabricated and experimental results are in close agreement with the simulated one. This antenna can be used for different wireless application like Personal Communication System (PCS) and Bluetooth/WLAN.