Abstract
Star-shaped microstrip antenna stacked with another star-shaped microstrip antenna to broaden axial ratio bandwidth is proposed. Optimal spacing between orthogonal modes to broaden axial ratio bandwidth is achieved by tuning dimensions, orientation, and height of driven patch. Increase of Axial ratio bandwidth is explained with modal analysis and systematic parametric study. An experimental result shows that proposed technique results in VSWR bandwidth of 900 MHz and axial ratio band of 110 MHz (7.2%) over which gain of 7 dB is obtained along broadside. Cross polar left-hand circular polarized radiation is 20 dB below as compared to right-hand circularly polarization.
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Odhekar, A.A., Deshmukh, A.A. (2020). Realization of Broadband Circularly Polarized Antenna Using Stacked Star Shape Microstrip Antenna. In: Vasudevan, H., Gajic, Z., Deshmukh, A. (eds) Proceedings of International Conference on Wireless Communication . Lecture Notes on Data Engineering and Communications Technologies, vol 36. Springer, Singapore. https://doi.org/10.1007/978-981-15-1002-1_26
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DOI: https://doi.org/10.1007/978-981-15-1002-1_26
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