Abstract
A novel compact Slotted Microstrip patch antenna with Defected Ground structure (DGS) operating for Wireless and satellite communication applications is proposed and investigated. This proposed antenna generates six different resonances operate at 3.3 GHz (WLAN), 5.1 GHz (WiMAX), 5.9 GHz(Satellite Application), 7.12 GHz(Earth Exploitation Satellite), 10.4 GHz(Mobile & fixed Radio location) and 13.1 GHz(Satellite Application) while maintaining overall compact size of 32x32x1.6 mm3 using a FR-4 substrate commonly available with a permittivity of er = 4.4. The proposed microstrip Patch Antenna (MSPA) consists of a square radiator in which a Log Periodic slot is etched out along with square defects on ground surface and a Microstrip feedline. The slotted patch with DGS modifies the total current path there by making the antenna to operate at six useful bands. The structure shows the impedance bandwidth of3%, 3.3%, 5.2%, 14.7%, 5.6% and 9% with gains 3dB, 3.8dB, 2dB, 1.8dB, 3.1dB and 4.82dB respectively. The antenna performance is analyzed using various s parametric optimization studies, field distributions and currents. Excellent agreement is obtained between measured and simulated results.
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