Dual Band Pentagonal Microstrip Antenna for Wi-Fi Applications

The proposed antenna is formed by a patch rectangular antenna with an inner pentagonal one, built on FR-4, due its low cost and availability. There were considered 2.4 and 5.8 GHz as the operation frequencies, considering linear polarization in order to apply them to Wi-Fi equipments. The pentagonal patches were designed considering them as equivalents with the corresponding circular resonators. The simulations are realized using CADFEKO, software based on the Moment Method (MoM). The proofs were realized considering the designed antennas as replacement ones on a router. Simulated input return loss show a good agreement with the operation frequencies design. It has been demonstrated that the dual antenna operate satisfactorily in the 2.4 and 5.8 GHz frequency ranges, showing its feasibility to use it for Wi-Fi applications. Experimental results are compared to predictions from a software package confirming monopolar radiation in two bands at 2.4 GHz and 5.8 GHz.