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Presentation
A New Compact Size Fractal Based Microstrip Slot Antenna for GPS Applications
Progress In Electromagnetics Research Symposium, Kuala Lumpur, Malaysia (2012)
  • Jawad K. Ali, Department of Electrical Engineering, University of Technology, Iraq
  • Zaid A Abed AL-Hussain, Department of Electrical Engineering, College of Engineering Al-Mustansiriya University, Baghdad, Iraq
  • Ammer A Osman, Department of Electrical Engineering, Al-Mustansiriya University, Baghdad, Iraq
  • Ali J Salim, Department of Electrical Engineering, University of Technology, Iraq
Abstract
A circularly polarized single feed microstrip slot antenna has been introduced in
this paper as a candidate for use in GPS applications. The slot structure of the proposed antenna
has been created on the radiating patch in two steps. At first, a 45 degree rotated square has
been etched at the center of the patch, and then a Sierpinski gasket type of the 3rd iteration
occupies the resulting slot. The presented antenna has been fed with a single 50Ohm probe. The
feed position has been allocated in such away to produce the dual orthogonal modes required
to produce the circular polarization radiation. The antenna has been designed to resonate at
1.575 GHz, L1 GPS band. Finite element simulations have been carried out to evaluate the
performance of the modeled antenna using the HFSS v.11 EM simulator, from Ansoft. The
resulting antenna has a slotted square patch with side length of about 40 mm. Simulation results
show that it possesses impedance and axial ratio bandwidths of about 27MHz and 22MHz
respectively, which meet the GPS L1 band requirement. Furthermore, the proposed antenna
possesses satisfactory circular polarization radiation characteristics and gain. The antenna can
be used for a wide variety of communication applications adopting circular polarization.
Publication Date
March 27, 2012
Citation Information
Jawad K. Ali, Zaid A Abed AL-Hussain, Ammer A Osman and Ali J Salim. "A New Compact Size Fractal Based Microstrip Slot Antenna for GPS Applications" Progress In Electromagnetics Research Symposium, Kuala Lumpur, Malaysia (2012)
Available at: http://works.bepress.com/jawad_ali/32/