A Low Cost Multiband Microstrip Antenna for Wireless Applications

This paper presents a new study on a low cost multiband microstrip antenna suitable for three operating frequency bands GSM900/PCS/WIFI/Bluetooth. The proposed antenna is mounted on an FR-4 substrate; the technique used to obtain the multiband behavior is based on the use of the solts inserted in the top face which is the radiator and the back face that is the ground. The use of this technique has taken into account to have at the end an antenna having good matching input impedance in the operating frequency bands with good performances concerning radiation. To validate such antenna, we have used two electromagnetic solvers, the first one was used for the optimization of the proposed antenna and the second one is used to confirm the simulation results.  After the validation into simulation, the final circuit was fabricated and tested which permits to validate the proposed antenna and we have conducted another test in order to verify the performances of radiation by associating the achieved antenna with an ARDUINO GSM shield. This test permits to transmit messages and to validate at the end the proposed printed antenna.