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- W2801342297 abstract "The conventional time-modulated arrays (TMAs) have a low radiation efficiency, since each antenna turns off at specific time slots. In this paper, first, the efficiency of TMA is investigated analytically. Next, the optimized switching sequences are proposed to enhance the radiation efficiency of a specific sideband, while preserving the level of the other sidebands. The practical hardware limitations are considered in the switching sequence design. Moreover, a low-cost flexible eight-element printed dipole array operating at 1.2-1.4 GHz is implemented to verify the proposed algorithms. The measured radiation patterns indicate that by applying the proposed sequences, the TMA efficiency improves by 8.3 dB for the fundamental frequency. The efficiency enhancement for the first and second sidebands is 2.9 and 2.95 dB, respectively. In addition, a fast and low-cost setup for TMA measurement using the commercial software defined radio dongle is implemented in this paper." @default.
- W2801342297 created "2018-05-17" @default.
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- W2801342297 date "2018-07-01" @default.
- W2801342297 modified "2023-09-23" @default.
- W2801342297 title "Efficiency Enhancement of Time-Modulated Arrays With Optimized Switching Sequences" @default.
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- W2801342297 doi "https://doi.org/10.1109/tap.2018.2829801" @default.
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