Sarabjeet Kaur, Bharti Chaurasiya, Mohd Sazid, Navaid Zafar Rizvi

A dual band compact circularly polarized antenna for GPS applications

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
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AbstractA novel dual band antenna with right‐hand circular polarization (RHCP) is fabricated. It consists of a T‐shaped parasitic element on the backside of T‐shaped patch (TSP) and a ground plane. The design comprises a rectangular and CPW fed clearance in the ground plane. The placing of a TSP and connecting rectangular stubs to the ground plane is used to achieve GPS L5 and L2 bands. Circular polarization in GPS L5 and L2 bands is produced by rectangular horizontal stubs and F‐shaped slots (FSS), respectively. The measured results show 34 MHz (1.160–1.194 GHz) and 57 MHz (1.207–1.260 GHz) –10 dB impedance bandwidth and 3‐dB axial ratio bandwidths are 10 MHz (1.174–1.184 GHz) and 10 MHz (1.223–1.233 GHz). It also displays a minimum axial ratio of 1.35 and 0.34 dB with broad beamwidth (>100°) essential for the GPS applications. The final design is verified in the experiment. The advantages of the proposed design are compact size, simple structure, and broad beamwidth.

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