Acta of Turin Polytechnic University in Tashkent


In this paper, a method of designing a Vivaldi type phased array antenna (PAA) which operates at S-band (6–90 GHz) is presented and good active S-parameter characteristics. An antipodal Vivaldi antenna with a compact parasitic patch to overcome radiation performance degradations in the high-frequency band is proposed. For this purpose, a double asymmetric trapezoidal parasitic patch is designed and added to the aperture of an antipodal Vivaldi antenna. The proposed antenna has a peak gain greater than 7 dBi over the frequency range of 6–90 GHz



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