A Tri-Band Meander-Shaped Patch Antenna for WLAN and Radio Navigation Applications

In this paper, a compact tri-band antenna is proposed for radio navigation and WLAN applications. The proposed antenna is designed to operate in the frequency bands 2.26-2.46GHz, 4.02-4.42GHz, and 5.15-5.5GHz with resonating frequency 2.36GHz, 4.2GHz, and 5.3GHz respectively. The first lower resonating frequency has been achieved by using the meander-shaped patch and other two higher resonating frequencies have been generated by using two inverted L-shaped back resonators. Extensive analyses of the reflection coefficient, radiation patterns, and peak gain at different resonating frequencies are presented. The peak gain at three different resonating frequencies is 3.42dBi, 4.12dBi, and 3.47dBi respectively. Multiple bands and higher gain performance of the proposed design make it suitable for the practical applications.