In this paper, a nine-element dual layered exponentially tapered slot antenna (TSA) is presented. The array is composed of 1:9 T-junction power divider which acts as a feed network with uniform distribution and 1x9 TSA element array. The array elements are designed to have a compact size with maximum refl ection coeffi cient less than -10 dB over the X-band operating frequency. The simulated results show good agreement with the measured results for the fabricated antenna array. Measured results of single element and a center element excited in array environment, both have a wide 3-dB beam width greater than 107° in the principal planes, which is capable of a linear array with wide scan angle ± 60°. The measured array has a 3-dB beamwidth of 11 degrees with side-lobe level of -12dB at 10GHz with a gain of 12dBi. These characteristics make the antenna array suitable for X-band airborne radar applications. © International Science Press.