DOI: 10.5176/2251-225X_MobiCONA1221

Authors: Srinivasa Yasasvy Sateesh Bhamidipati and Robert F. Kubichek


Abstract:
Conventional smart antennas create flexible beam patterns using weights that have both magnitude and phase. This requires expensive hardware in the form of individual receivers and transmitters, high-speed D/A and A/D converters and capable DSP or FPGA processors. This paper looks at the use of low-complexity spatial antenna arrays that can create reasonably complex antenna patterns using a phased array approach. Convex optimization is applied to solve the highly non-linear optimization problem. Square array geometries were studied in depth by applying various penalty functions. We found that convex optimization is a novel and effective way to compute the complex antenna weights, and that this low-complexity approach is an interesting alternative to more expensive smart antennas
Keywords: convex optimization; spatial antenna; penalty functions; phased array; antenna weights

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