Penta-band Antenna with Defected Ground Structure for Wireless Communication Applications

This work proposes a compact, penta-band, slotted antenna with Defected Ground Structure (DGS). The proposed multiband resonator is intended for integration into microwave circuits and portable RF portable devices. The prototype with spurlines and DGS is designed on thin Rogers RT Duroid 5880 substrate having thickness 0.508 mm. The presented radiator is capable to cover the frequency bands 2.46-2.59 GHz, 2.99-3.78 GHz, 5.17-5.89 GHz, 6.86-7.36 GHz, 9.38-11 GHz. The impedance bandwidths of 5.24%, 23.68%, 12.8%, 7.24% and 16.08% is obtained for the covered frequency bands respectively. The antenna proposed in this work thus supports WLAN, WiMAX, ISM, LTE, Bluetooth, C-band and X-band applications. The radiator attains 4.2 dB peak gain. It is apparent from the radiation performance of the prototype, that it is an effective candidate for current and forthcoming multiband wireless applications.