Fractal Antenna and their Multi-band Performance Evaluation

This paper describes fractal antennas and compares their performance with a standard dipole antenna. Characteristics such as compactness, multi-band operation, broad bandwidth and high efficiency all play an important role these days in wireless communications. However, conventional technologies being used are reaching their limits of improvement to meet the market requirements. An alternative to these conventional technologies is applying fractal structure to antenna design. The fractal properties of self-symmetry and structure at all scales can provide great advantages when applied to antenna designs. Here a very simple fractal antenna -a 2^nd stage Koch curve dipole antenna is simulated using the MMANA software and is compared to a standard dipole antenna simulated in the same environment. Results obtained prove the superiority in performance of the Koch curve dipole to that of the standard dipole antenna.