Design and Analysis of Metamaerial-inspired Miniaturized Dual-Band Antenna

Abstract

This project introduces a design of a low-profile coplanar waveguide fed metamaterial- inspired dual-band microstrip antenna suitable for Wireless Local Area Network WLAN applications. The proposed antenna has a compact size of 18×20 mm², fabricated on an FR-4 substrate with a dielectric constant ? ?? =4.3, and utilizes a double split ring resonator SRR triangular geometry to achieve dual-band operation. The antenna operates within two distinct frequency bands [2.38-2.52GHz] and [4.24-8.1GHz], covering the entire WLAN spectrum [2.4-2.48GHz], [5.15-5.35GHz], and [5.725-5-825GHz]. The prototype of the proposed design is fabricated and measured. A fairly good agreement was achieved between the simulated and measured frequency responses of the reflection coefficient indicating that the proposed metamaterial-inspired dual-band antenna is suitable for WLAN applications. Finally, a comparative study is also presented to show the performance of the proposed antenna with respect to other conventional antenna structures in terms of overall size, bandwidth, and reflection coefficient. The findings highlight the antenna's competitive advantages, such as wide bandwidth and favorable reflection coefficient, while maintaining a compact size.