Abstract
A reconfigurable antenna based on E-shaped structure with bandwidth controlled is proposed in this paper. The bandwidth of the antenna can be increased and controlled from 3.4% to 23% by varying the capacitance of the varactor diodes. The bandwidth can cover the frequency range from 1.85 GHz-2.33 GHz. The antenna consists of four E-Shaped connected to 50 ohm GCPW line, varactor diodes and 10 pF ship capacitances. The total size of the antenna is 80 x 80 mm(2). The performances of the proposed antenna, in terms of return losses and radiation patterns, with different DC bias voltages across the varactor diode, have been studied using computer simulation and measurement. Simulated and measured results are in good agreements.