Radar Cross Section of Phased Array with Parallel Feed Network
نویسنده
چکیده
The scattering characteristics of a phased array depends on its feed network. The variation of scattered fields within the feed network affects the antenna mode scattering. In this paper, an attempt is made to determine the radar cross section (RCS) of a planar array with parallel-feed network. The scattered field of the array is obtained by following the path of the signals through the antenna system. This yields the scattered field in terms of reflection and transmission coefficients at each stage of the feed network. The simulation results are presented to emphasize the effect of design parameters like number of antenna elements, inter-element spacing, beam scan angle and the level of couplers on the RCS pattern. The analysis presented can be used for designing the phased arrays with reduced RCS, suitable for stealth applications. Keywords-Radar cross section (RCS); parallel feed network; reflection coefficient; transmission coefficient
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