Modified minkowski fractal multiband antenna with circular-shaped split-ring resonator for wireless applications

In this article, a modified Minkowski fractal antenna with a circular-shaped split-ring resonator (CSSRR) structure is proposed for wireless applications. Fractal geometry is accountable for creating dual-band resonance, and CSSRR is responsible for obtaining a middle resonance frequency band. The proposed antenna has a compact dimension of 23.5 x 26.5 x 1.6 mm3 to be fabricated and measured. Antenna iterations performed to achieve the desired frequency band. Antenna design has three resonance frequency bands at 2-2.7 GHz (700 MHz), 3.4-3.6 GHz (200 MHz) and 5.45-5.95 GHz (500 MHz), respectively. It can be used to cover 2.4/5 GHz wireless local area network (WLAN), 2.5/3.5 GHz wireless interoperability for microwave access (WiMAX), 2.1/2.3 GHz 3 generation (3G)/4 generation (4G) and 5.9 GHz safety applications. It is observed that the proposed antenna has good radiation characteristics in both E-plane and H-plane in the desired frequencies. Further, it has better antenna parameters than the various antenna designs reported in the literature.