Chalipa, A Novel Wideband Circularly Polarized Microstrip Fractal Antenna

Conference: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
03/23/2009 - 03/27/2009 at Berlin, Germany

Proceedings: EuCAP 2009

Pages: 4Language: englishTyp: PDF

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Rahmani, Maryam; Tavakoli, A.; Amindavar, H. R.; Reza, Ali M.; Dehkhoda, P. (Electrical Engineering Department, Amirkabir University of Technology (Tehran Polytechnic), 424 Hafez Ave., Tehran, Iran)

An improved wideband circularly polarized microstrip antenna is here proposed and analyzed. The radiating structure consists of a simple patch with a basic shape “Chalipa”, two rotated broken and crossed “S”, which has been iterated by a fractal pattern achieving a multiband or even wideband, structure. The basic shape represents a clockwise rotation that results in the same rotation of current direction and therefore the electromagnetic fields. This special characteristic of the antenna makes a significantly wideband circular polarization and compensates the bandwidth restrictions of microstrip antennas.