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In this paper, a broadband single-layer microstrip reflectarray element composed of a split double ring patch printed on composite substrate of low-cost, lossy materials FR4 and foam is presented and compared with the double square ring patch. The analyses are performed using the CST Microwave Studio software package. The proposed structure offers a slope value of 60°/mm, while the phase range is...
This paper presents a low sidelobe level (SLL) and wide-band 8×8 aperture coupled microstrip antenna array. For rigorous analysis of element characteristics, a single aperture coupled microstrip antenna is analyzed using finite difference time domain (FDTD). Consideration imperfect ground planes in antenna and the finite structure, one finds that FDTD gives more precise results for element designing...
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