Antipodal Vivaldi Antenna for Passive Imaging Technology in Ka Frequency Band

Passive Millimeterwave Imaging (PMI) Technology is used to view scene in foggy air conditions or to see concealed weapon under clothes that cannot be seen other technology because of the materials of weapon. There are some frequency windows to work with millimeterwave technology as 35, 96 and 220 GHz and it is near 35 GHz frequency for this work. Antenna is one of the most important part in PMI Technology, consequently; major importance has been given to this segment. Antipodal Vivaldi Antenna has 50.07 ohm input impedance for matching to the forward circuit, and -39.23 dB input reflection coefficient, S11, and 6.82 dB gain, is designed for 35.18 GHz in Computer Simulation Technology Studio Suite Program (CST). After the antenna is connected to the other circuits such as amplifier or detector, the created system will be integrated into a scanner which is capable of scanning azimuth and elevation axes. As a result, PMI System will be formed and ready to view the scene or the hidden things in haze air conditions.