Putu Artawan^1,2 Yono Hadi Pramono¹, Mashuri¹ Josaphat T. Sri Sumantyo³, ¹Institut Teknologi Sepuluh Nopember (ITS), Indonesia, ²Ganesha University of Education, Indonesia ³Center for Environmental Remote Sensing (CEReS) Chiba University, Japan

This paper presents the designed of varians array in curved microstripline antenna for radar communication. The antenna geometry comprises of three varians in matrics 2x2, 2x4 and 4x4 dimensions. The several array operates in C-Band frequencies (4GHz – 8GHz) and X-Band frequencies (8GHz-12GHz) with a 1.82 VSWR, -18.72dB Return loss, 0.29 reflection coefficient, and 5.8dB gain for 2x2 array, 1.64 VSWR, -16.17dB Return loss, 0.24 reflection coefficient, and 5.4dB gain for 2x4 array, 1.04 VSWR, -37.70dB Return loss, 0.19 reflection coefficient, and 7.6dB gain for 4x4 array. All of the varians in array elements are feed using a direct feeding technique. This array antenna is suitable developed for use in radar communication systems.

Array, Curved microstripline, Radar communication, C-Band, X-Band