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This letter proposes a flat-top beampattern synthesis method in range and angle domains for frequency diverse array (FDA) based on second-order cone programming (SOCP). By dividing the array into subarrays and applying each subarray with a distinguishable frequency shift, this approach explores the separated degrees of freedom in range domain and is capable of generating a two-dimensional flat-top...
A multobjective IWO (MOIWO) for the synthesis of time-modulated arrays (TMAs) to achieve low sidelobe level, low sideband level, and narrow beamwidth is presented in this paper. First, the classical IWO algorithm is extended to a multobjective IWO (MOIWO) based on the nondominated sorting of the solutions. The the proposed MOIWO algorithm is applied to optimize the pulse durations and the switch-on...
Microstrip antenna with frequency and radiation pattern selectivity is presented in this paper. A small patch-slot-ring structure is used as the radiating element. PIN diodes loaded across the slot-ring are employed to switch the pattern in three directions. The three patterns can cover the area from −80° to 60°. Moreover, one of the three situations operates at 2.84 GHz, and the others operate at...
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