Antipodal Vivaldi Antenna for Passive Imaging Technology in Ka Frequency Band

Antenna is one of the most important part in Passive Millimeterwave Imaging (PMI) Technology which 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 PMI Technology as 35, 96 and 220 GHz and it is near 35 GHz frequency window for this work. Antipodal Vivaldi Antenna has 50.07 ohm input impedance, Z, for matching, and -39.23 dB input reflection coefficient, S11, and 6.82 dB gain, G, is designed for 35.18 GHz center frequency in Computer Simulation Technology (CST) Program. The antenna has 110 MHz bandwidth and it can work between 35.23 GHz and 35.12 GHz frequencies. After the antenna is connected to the amplifier or detector circuits, 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.

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