A PIFA antenna which supports hexa bands of various wireless standards in this current era is designed. The proposed antenna is configured with the concept of loop and slot structure in order to acquire wider bandwidth, multiple resonance, and good efficiency and to diminish the size of conventional PIFA antenna. This multiband internal PIFA antenna is having the ability of operating in GSM (900 MHz), Standard Positioning Service (1.176 GHz) of Indian Regional Navigational Satellite System (IRNSS) L5 band UMTS-DCS (1710-1880 MHz) and PCS (1850-1990 MHz), LTE 2300 (2305-2400 MHz) and ISM bands of Wi-Fi/Bluetooth (2.4 GHz). The proposed multiband antenna is designed using the FR4 epoxy substrate with the thickness of 1.6 mm. The simulation results are analyzed and optimized using 3D electromagnetic simulation software which is based on the finite element methodology. Return loss, voltage standing wave ratio (VSWR), radiation pattern, and gain are the attributes obtained and validated for the designed PIFA antenna.
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