Abstract
This article presents a novel approach for six-band operations and a comprehensive frequency range for wireless applications. The novel antenna has rectangular slot of small size 48x18mm2 and has a T-shaped microstrip feed patch, a short-inverted T-shaped stub, two E-shaped stubs and two small square ground plane slots arranged on FR4 substrate with h= 0.8mm, a dielectric constant =3.5 mm and a loss tangent =0.004. Multiband and wide frequency responses in an antenna was achieved by etching E shaped stubs, inverted T-shaped stubs and rectangular slot in a defective ground plane. Radiating area and total size of antenna are smaller than three band antennas discussed in results section. Sixband slot antenna, resonance at 1.39 GHz (Global Position System-L3 band (GPS)), 3.36 GHz (Worldwide Interoperability for Microwave Access (Wi-MAX)), 5.26GHz (IEEE 802.11a (Wireless Local Area Network) WLAN)), 5.96 GHz (Vehicle to Vehicle Communications (V2V)), 7.27 GHz (C-band for Military Communications) and 8.41GHz (X-band for Satellite Communications) frequency bands. Six band rectangular slot antenna is investigated and designed using IE3D software. To verify simulation results, an antenna is fabricated and tested. The antenna exhibit S11<-10 dB bandwidth of 8.57% (1.34-1.46 GHz), 7.97% (3.25-3.52 GHz), 6.85% (5.07-5.43 GHz), 2.54% (5.82-5.97 GHz), 3.84% (7.14-7.42 GHz), 4.83 %( 8.27-8.68GHz). The closed contact between measured and simulated results supports effectiveness of suggested approach.
Keywords: Defective Ground Structure, Global Positioning System, Vehicle to Vehicle Communication, Wireless Local Area Network