The synthesis of electromagnetic pulses with an extended spectrum by summing pulses of different duration in free space has been studied. The radiation spectrum has been estimated analytically for a 4-element array of combined antennas excited by bipolar voltage pulses of duration 0.5, 1, 2, and 3 ns. It has been shown experimentally that radiation with a spectral width of more than three octaves can be produced using a 2×2 array of combined antennas excited by bipolar pulses of duration 2 and 3 ns.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 8, pp. 98–102, August, 2017.
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Koshelev, V.I., Plisko, V.V. & Sevostyanov, E.A. Synthesis of Nanosecond Ultrawideband Radiation Pulses. Russ Phys J 60, 1373–1378 (2017). https://doi.org/10.1007/s11182-017-1224-2
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DOI: https://doi.org/10.1007/s11182-017-1224-2