Summary
International Symposium on Antennas and Propagation
2011
Session Number:WeD1
Session:
Number:WeD1-1
Novel Active Reconfigurable Fractal Dipole Antenna using RF PIN diodes
S. A. Hamzah, M. Esa, N. N. N. Abd. Malik, M. K. H. Ismail,
pp.-
Publication Date:2011/10/25
Online ISSN:2188-5079
Summary:
Harmonics are harmful and undesirable in many applications. Fractal technology can be embedded into an antenna due to its high ability in reducing the physical size of the antenna, increasing its operating bandwidth and directivity. However, such introduction of fractals can cause significant undesired harmonic problems associated with higher order modes of the antenna. In this paper, the design of an active harmonic suppressed small fractal dipole antenna named TMFDB25 is presented. It has tunable capability of a reconfigurable operation within an observed range of 400 MHz to 2 GHz. The switchable small fractal dipole antenna is integrated with open circuit stubs and RF PIN diodes. The proposed structure has diode biasing circuit that influences the actual performances of the antenna. These results are the most reliable obtained. The simulation results showed that the antenna has a capability to tune single operating frequency out of four at a time, simultaneously, suppressing the higher order mode.