A Wideband Circular Polarized Antenna using Coplanar Waveguide
Mohammad Imroz Khan1, Telagathoti Pitchaiah2
1Mohammad Imroz Khan, Department of Electronics and Communication Engineering, Vignan’s Foundation for Science, Technology and Research, Guntur, Andhra Pradesh, India.
2Telagathoti Pitchaiah, Department of Electronics and Communication Engineering, Vignan’s Foundation for Science, Technology and Research, Guntur, Andhra Pradesh, India.
Manuscript received on 08 April 2019 | Revised Manuscript received on 15 April 2019 | Manuscript Published on 26 July 2019 | PP: 587-589 | Volume-8 Issue-6S4 April 2019 | Retrieval Number: F11200486S419/19©BEIESP | DOI: 10.35940/ijitee.F1120.0486S419
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: A wideband coplanar waveguide (CPW) antenna with circular polarization characteristics using modified ground slot is studied in this work. Proposed design incorporates a hexagonal slot instead of rectangular slot, accounting for enhanced impedance matching. This ground slot is energized by a 50Ω feed line, resulting in excitation of two orthogonal phase quadrature modes (even-odd modes). Thus, fulfilling the essential criteria required for realizing circular polarization. A narrow horizontal slit (lg) is embedded in the ground plane at immediate left of feed line, accounting for wideband characteristics. 10dB impedance bandwidth of proposed antenna extends from 2.65- 5.60 GHz, while 3dB axial ratio bandwidth extends from 3.90- 5.80 GHz. Hence, overlapping bandwidth of proposed antenna extends from 3.90 – 5.60 GHz. RHCP characteristics with monopole radiation pattern makes proposed antenna useful for WLAN, radio navigation and radiolocation applications.
Keywords: Cpw, Circular Polarized, Slot, Wideband, MMIC, RHCP.
Scope of the Article: Communication