International Journal for Scientific Research and Development, 2015
This paper focuses on improving the directive properties of a conventional patch antenna by using... more This paper focuses on improving the directive properties of a conventional patch antenna by using a known technique of applying metamaterial slab as a cover. The metamaterial under consideration is a modification of Pendry‟s SRR structure and is equivalent to two SRRs connected back to back. The unit cells were arranged in an array configuration, investigation of Sparameters was done for checking the Negative index property. As expected with the use of metamaterial as a cover, directionality of conventional patch antenna improved significantly and the 3 dB beam-width reduced. A conventional patch antenna generally shows 3 dB beam-width of ~80deg while the antenna presented in this paper with the metamaterial shows improved 3dB beam-width of 45 deg.
IEEE Transactions on Antennas and Propagation, 2012
In this article, a balanced symmetrical low cross polarization (X-pol) substrate integrated waveg... more In this article, a balanced symmetrical low cross polarization (X-pol) substrate integrated waveguide (SIW) based leaky wave antenna (LWA) is presented. The unit cell of the LWA consists of transverse and longitudinal slots, which provide series and shunt resonant elements, essentially required to radiate at broadside direction efficiently. The radiating slots are arranged in a way such that the unit cell is symmetrical around the centerline so as to achieve the low X-pol levels. Moreover, the shape of the longitudinal slots are changed and optimized to match the unit cell impedance to the characteristic impedance of the SIW. Parametric constraints of the radiating slots are studied for achieving the continuous beam scanning and the best low X-pol in the presented LWA. The final presented LWA is capable of continuous beam scanning from −28 to +30 within a frequency range of 9.5-15.2 GHz including broadside at 12.2 GHz. Moreover, the X-pol levels are better than −40 dB all over the scanning frequency range. Finally, the antenna prototype is fabricated and tested. Simulated and measured results are in good agreement. The maximum gain of the antenna measured is 13.8 dB.
International Journal for Scientific Research and Development, 2015
This paper focuses on improving the directive properties of a conventional patch antenna by using... more This paper focuses on improving the directive properties of a conventional patch antenna by using a known technique of applying metamaterial slab as a cover. The metamaterial under consideration is a modification of Pendry‟s SRR structure and is equivalent to two SRRs connected back to back. The unit cells were arranged in an array configuration, investigation of Sparameters was done for checking the Negative index property. As expected with the use of metamaterial as a cover, directionality of conventional patch antenna improved significantly and the 3 dB beam-width reduced. A conventional patch antenna generally shows 3 dB beam-width of ~80deg while the antenna presented in this paper with the metamaterial shows improved 3dB beam-width of 45 deg.
IEEE Transactions on Antennas and Propagation, 2012
In this article, a balanced symmetrical low cross polarization (X-pol) substrate integrated waveg... more In this article, a balanced symmetrical low cross polarization (X-pol) substrate integrated waveguide (SIW) based leaky wave antenna (LWA) is presented. The unit cell of the LWA consists of transverse and longitudinal slots, which provide series and shunt resonant elements, essentially required to radiate at broadside direction efficiently. The radiating slots are arranged in a way such that the unit cell is symmetrical around the centerline so as to achieve the low X-pol levels. Moreover, the shape of the longitudinal slots are changed and optimized to match the unit cell impedance to the characteristic impedance of the SIW. Parametric constraints of the radiating slots are studied for achieving the continuous beam scanning and the best low X-pol in the presented LWA. The final presented LWA is capable of continuous beam scanning from −28 to +30 within a frequency range of 9.5-15.2 GHz including broadside at 12.2 GHz. Moreover, the X-pol levels are better than −40 dB all over the scanning frequency range. Finally, the antenna prototype is fabricated and tested. Simulated and measured results are in good agreement. The maximum gain of the antenna measured is 13.8 dB.
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Papers by Anumeha badoni