Recent advancements in high throughput Ku – band satellites will allow commercial Ku – band aeronautical mobile satellite systems (AMSS) to equal or exceed commercial Ka – band AMSS systems on cost and performance. The first example of this is Panasonic’s acquisition of capacity on Intelsat – 29e satellite, the first satellite to use Intelsat’s Epic NG platform. Ku – band currently dominates the AMSS broadband market. Systems like Panasonic’s connect, Ro w44 and Yonder provide service to the commercial market while other providers such as Tachyon and Boeing serve the government market. All of these systems use conventional continental – scale wide beams that are leased from Fixed Satellite Service (FSS) providers like Intelsat. However, in several years the dominance of Ku – band in the AMSS market will be challenged by forth coming Ka – band systems, such as Inmarsat – 5. These systems use customized satellites with multiple spot beams to offer enhanced performance over conventional wide beam Ku – band. The proposed method to design a new ku-band dual beam U-slot antenna. This antenna band width range up to 12.25GHz, 13.4GHz and 14.5GHz bandwidth range. This design used to increase the radiation pattern. The proposed antenna design to be compact and this design to improve the wide band width range. The antenna operating frequency range is 12.25GHz, 13.4GHz and 14.5GHz bandwidth with VSWR less than 2. The proposed MS antenna patch design is easily analyses and the proposed system to easily integrate another type of application devices. This design will covers ku operating band.