Axially displaced ellipse reflector antenna design for wideband radar applications

Nowadays antennas has fairly many areas of use. And these areas of use have been continuously expanding and new necessities are emerging. In the scope of this study, as a part of designing process for a ultra wideband reflector antenna with two reflector surface, UWB double ridged horn antenna design and axially displaced reflector antenna design were focused on. The purposes of use of the Horn antennas and their experimental results have been studied. UWB DRH and ADE antennas are used for widely areas such as from satellite communications to radar technologies also from test processes to measurement applications. The specialization of the work is the implemantation of a broadband design to the ADE type geometry, which is a system that has dual reflectors. The design covers a novel band starting at 8 GHz, which is the initial limit of the X band, to 40 GHz while passing through all three K bands (Ku-K-Ka) including millimeter waves. This dynamic frequency range includes points such as 10GHz, 24GHz and 35GHz, which are most commonly used in industrial or military applications. The geometrical architecture of these type of antennas, their radiation characteristics and performances have been investigated. The simulation program of "CST Microwave Studio" was used for monitoring the antenna design results through simulation. By simulating the antenna with a second simulation program called "ANSYS HFSS", it is desired to make sure that the numerical solution method and the simulation setup environment are correct. Optimization studies have been carried out on the system and simulation results have been obtained in terms of manufacturing, cost and other criteria. In this study, characteristics such as antenna gain, beamwidth and pattern, side lob level, radiation efficiency are improved by taking into consideration the performance parameters such as reflection loss(S11) and system total efficiency for the system operating in the 8-40GHz frequency range.