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We have introduced metamaterial superstrate in microstrip-based radiating structure to increase its bandwidth. Split ring resonators are added as metamaterial metallic inclusion in superstrate of the conventional design. This changes the basic structure of the material. Material properties such as permittivity and permeability changed due to change in the structure. The change in its material properties enhances the bandwidth of the antenna. The antenna is meandered to achieve better performance at the edges which in a way improve the radiation path of the patch. Here, the proposed antenna works on three bands in the range 3–8?GHz. Maximum 60% bandwidth is enhanced in the third band. The voltage standing wave ratio and return loss (S11) of the entire three bands are shown in the paper. The antenna works on 3.51, 4.86 and 7.8?GHz. Design results are obtained by high-frequency structure simulator which is used for simulating microwave passive components. [ABSTRACT FROM AUTHOR]

A novel and simple printed dual-band monopole antenna is presented. Printed on a single laminate dielectric substrate and easily fed by using a coplanar waveguide (CPW) stripline, a thin, low-profile, and flexible antenna structure with two symmetrical S-like meandered strips of same size, capable of generating two separate resonant modes, is achieved. Prototypes of the proposed antenna, including mounted on two different curved solid structures, have been constructed and tested. Good impedance matching in a wide dualband covering 2.4/5-GHz WLAN operating standard has been obtained, along with good radiation performance and antenna gain over the entire frequency range. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1529–1532, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21688 [ABSTRACT FROM AUTHOR]