Analysis and design of Minkowski-like fractal antennas

Abstract

In order to achieve that an antenna works in ISM2.4G(2.4～2.483 5 GHz), Bluetooth,GPS,WLAN(2.4～2.48 GHz) and other multi-frequency band at the same time，the Minkowski fractal microstrip antenna based on the fractal theory is designed, and the original Minkowski fractal structure and ground plate are improved. Through simulation analysis and optimization design, the antenna size is reduced to 90 mm×71 mm×1.6 mm, the resonance frequency is 2 GHz, working in the frequency band of 0.93 GHz～3.02 GHz, the relative bandwidth is 105.82%, and the maximum gain can reach 1.89 dB. Finally, the antenna can carry out good impedance matching, and the bandwidth of the antenna is broadened to meet the requirements of the UWB antenna.

Keywords

• minkowski-like fractal antenna
• broadband
• high gain
• miniaturization