Yu.S. Askerova - Engineer, JSC «Corporation «Vega» (Moscow) A.P. Kurochkin - Dr. Sc. (Eng.), Professor, Head of Department, JSC «Corporation «Vega» (Moscow) A.I. Mamakov - Engineer, JSC «Corporation «Vega» (Moscow) A.G. Ostrovsky - Ph. D. (Phys.-Math.), Senior Research Scientist, Leading Research Scientist, JSC «Corporation «Vega» (Moscow). E-mail: mail@vega.su E.V. Urzhumtsev - Research Scientist, JSC «Corporation «Vega» (Moscow)

The requirements for main parameters of the ultra-wideband pulses radiator for multi-element receiving-transmitting video pulse scanning antenna array (VPSAA) are considered. It is noted that the known radiators of simple design do not satisfy the requirements specified. The petal-shaped radiator of special configuration which is excited by single polarity ultra-wideband pulse and radiates electromagnetic pulse with effective duration of about 1 ns within wide solid angle is has been researched. In result of computer modeling of the petal-shaped radiator the time, frequency, spectral, energy characteristics and spatial characte-ristics of radiation of the radiator-s computer model which could meet the requirements specified have been received and are given in this paper. In case of overall dimensions about 218×160 mm in VPSAA antenna sheet plane and excitation by video pulse with duration of 0.45 ns the radiator could have simultaneously feeder antenna efficiency of 77%, VSWR of not more than 1.7 within the frequency band above 0.5 GHz, width of amplitude radiation pattern of 90×80°. The radiation patterns of the model of antenna array on the basis of petal-shaped radiators are shown. In conclusion it is noted that the petal-shaped radiator could be a component of receiving-transmitting ultra-wideband multi-element video pulse antenna array ensuring two-dimensional wide-angle scanning and could be used as an individual antenna in different purpose radio technical complexes.

 

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