Title :
Circularly polarized microstrip fractal antennas
Author :
Dehkhoda, P. ; Tavakoli, A.
Author_Institution :
Electr. Eng. Dept., Amirkabir Univ. of Technol., Tehran, Iran
Abstract :
A miniaturized circularly polarized antenna based on the Sierpinski gasket is presented. In exchange for size reduction, minimum axial ratio and the bandwidth of this antenna are degraded. An additional new microstrip fractal antenna named the crown square antenna is also introduced and illustrated to have circular polarization when its feed location is near to the center of the antenna. We have also optimized this microstrip fractal antenna to get minimum axial ratio of 3.94 dB.
Keywords :
antenna feeds; antenna theory; electromagnetic wave polarisation; fractals; microstrip antennas; optimisation; Sierpinski gasket; antenna bandwidth; antenna center; circular polarization; circularly polarized antenna; crown square antenna; feed location; microstrip fractal antennas; miniaturized antenna; minimum axial ratio; optimization; size reduction; Antenna feeds; Bandwidth; Fractal antennas; Gaskets; Genetics; Impedance; Message-oriented middleware; Microstrip antennas; Polarization; Shape;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2004. IEEE
Print_ISBN :
0-7803-8302-8
DOI :
10.1109/APS.2004.1330088
