Abstract
In this paper authors present the design and analysis of split ring resonator based multiband antenna for wireless applications with frequency-band reconfigurable features. The proposed design has octagonal shape SRR structure fed at vertex as radiating section and rectangular shape switchable slotted ground part. The antenna has dimensions of 44 × 39 × 1.6 mm3 and fabricated on FR4 substrate. The proposed structure exhibit hexa operating resonance characteristics at 3.3, 5.0, 5.8, 6.6, 9.9 and 15.9 GHz to cover the wireless standards at lower WiMAX, upper WLAN, super extended C-band, middle X band and lower KU band respectively. Antenna achieve the frequency band reconfigurability characteristics by inserting PIN diode in slotted ground (reclined L-shaped) as triple/hexa resonant bands during OFF/ON switching state of PIN diode. An acceptable gain, stable and consistent radiation patterns with low cross polarization and good impedance matching are obtained at targeted frequency bands of proposed design.
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