The proposed antenna radiation size is 9.4x6.12mm with low permittivity value 2.22, loss tangent value 0.0004 and 0.4mm thickness Duroid 5880 dielectric substrate material were used. An inset microstripline feed has been used because of its simplicity and ease of practical manufacturing. The parametric study is performed with a change of the form of patch to achieve the Ka-band UWB frequency, dual-band and a high gain. The Proposed antenna impedance bandwidth (VSWR<2) is achieved with wide band characteristics 1 GHz (23.3-24.3GHz) on the lower Ka-band frequency and 2 ) on the upper Ka-band frequency. An extensive analysis of the return loss, gain and efficiency of the proposed antenna is discussed in this paper. The antenna is simulated by computer software technology Microwave studio (CST), the presented antenna competent for the satellite and radar applications in Ka-band.