Abstract

This article presents a compact dual-band patch antenna designed for wireless communication systems. The proposed antenna design operates efficiently at both 2.45 GHz and 5.76 GHz achieving high performance despite its compact size. The Defected Microstrip Structure (DMS) is used to create the desired frequency bands and improve the impedance matching at the respective required frequencies, respectively. The antenna is manufactured on a low-cost FR-4 substrate, with dimension of 27 mm × 27 mm × 1.6 mm. The simulated radiation efficiencies at 2.45 GHz and5.76 GHz are 95% and 73%, respectively. In addition, the gain of the suggested antenna is more than 2.65 dB and around 2.84 dB at the desired frequency bands. The suggested antenna is simulated, manufactured, tested and verified practically. The return losses measured in the lower and upper resonance bands are 29.94% (covering the frequency range 2.13 to 2.88 GHz) and 6.2% (covering 5.65 to 6.01 GHz), respectively. The radiation pattern is measured and compared with simulation one. The design is simple, easy to carry on and is very compact, while enabling seamless operation across two different frequency bands, make it suitable for diverse wireless applications.

Key words: Compact, Dual-band, DMS, WLAN.