Design of Miniaturized compact multi-band Microstrip Patch Antenna

The present day Systems are operating in two or more frequency bands, requiring Dual or even triple band operation with narrowband antennas. This requirement is demanding a lot more of research in the field of antenna design. These include GPS, Satellite navigation system, wireless cellular system and LANs. Recent advances in the software defined and reconfigurable radio networks allow the multiple band operation of the systems. One of the specific advantage of the software defined reconfigurable radio network is that the operating frequency can be changed even after the device is manufactured. A multiband Microstrip patch antenna is simulated by meandering the slots to reduce the overall dimensions of the patch and to make the system much more embedded, the performance of the antenna is optimized and analyzed using the Ansoft high frequency structure simulator (HFSS). The antenna is designed to function satisfactorily in the radio band of L, S, C and X, Covering a wide range of radio frequency. Antenna has the six active frequency bands and the Centre frequency of the bands are 1850 MHz, 2910 MHz, 5580 MHz, 6880 MHz, 8340 MHz, 9430 MHz respectively. Out of frequency bands L and S are employed in mobile communication while the C and X band are used in the satellite communication purpose. The proposed antenna provides good return loss S11 and VSWR in the range of 1 < VSWR < 1.5 for all the operating band of frequencies.