Compact multiband microstrip patch antenna for wireless applications

A Microstrip patch antenna that can be used for Wi-Fi, Bluetooth and WIMAX frequencies, has been proposed in this work. The objective of the work is to design an antenna with multiple resonances at 2.45 GHz, 3.6 GHz and 5.3 GHz and miniaturization of the patch using high dielectric constant. Microwave substrate of size 30mm × 30mm havinga dielectric constant of 10.2 and a loss tangent of 0.002 is used to fabricate the antenna. The desired frequencies are obtained by cutting slots in the patch and impedance matching is done by providing defective ground. The miniaturized antenna is fabricated through photo etching process, tested and the results are validatedwith simulation result.