Dual-Band Printed Dipole Antenna Using Rectangular-Shaped Resonators for 2.4/5.5 GHz WLAN Applications

Document Type : Research Paper

Authors

Department of Electrical Engineering, Urmia University, Urmia, Iran

Abstract

A new design of a dual-band printed dipole antenna with integrated balun is presented in this study. The antenna in simple form is composed of a printed dipole, integrated balun, a Γ-shaped feed, and a square-shaped ground plane, which achieves a fundamental resonance at 2.4 GHz frequency. A pair of rectangular-shaped resonators are positioned on two sides of the Γ-shaped feed in the second designing step innovatively to accomplish the additional resonance at 5.5 GHz as the second frequency band of the WLAN. Two electromagnetically coupling mechanisms prepared between the Γ-shaped feed and dipole arms, and rectangular-shaped resonators, which lead to creating two operating frequency bands. An equivalent circuit and a parametric study presented to explain the antenna performance in this work. Experiments approve that the proposed dual-band antenna has two impedance bandwidths of 14.1% (2.23-2.57 GHz) and 25.7% (4.83-6.26 GHz) with average gains of 12.10 dBi and 6.36 dBi over the first and second frequency bands, respectively, which is cover the 2.4/5.5 GHz WLAN frequency bands successfully.

Keywords

References

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