yuan xuelin, zhang hongde, xu zhefeng, et al. Experiment of UWB time-domain antenna beam scan by controlling delay[J]. High Power Laser and Particle Beams, 2010, 22.
Citation:
yuan xuelin, zhang hongde, xu zhefeng, et al. Experiment of UWB time-domain antenna beam scan by controlling delay[J]. High Power Laser and Particle Beams, 2010, 22.
yuan xuelin, zhang hongde, xu zhefeng, et al. Experiment of UWB time-domain antenna beam scan by controlling delay[J]. High Power Laser and Particle Beams, 2010, 22.
Citation:
yuan xuelin, zhang hongde, xu zhefeng, et al. Experiment of UWB time-domain antenna beam scan by controlling delay[J]. High Power Laser and Particle Beams, 2010, 22.
The theory on beam scan of ultrawide-band (UWB) time-domain antenna is introduced, and it is pointed out that accurate delay between antenna units is the key problem. Therefore, an accurate delay-controller, used in beam scan of UWB time-domain antenna array, has been designed with 50 ps delay step and 10 ps precision. Experiments on beam scan of a 4-unit UWB antenna array with unit spacing of 42 cm has been conducted with this controller controlling the delay between units. The scan step of angle is less than 2°, and the actual scan angles are -0.5°， 10.5°， 20°and 29.5° respectively for the objective angles of 0°， 10°， 20° and 30°. The error between experimental result and theoretical caculation is under 1°.
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