Frequency Beam Steering Antenna for Millimeter Wave Checkpoint Scanners

Alibakhshikenari, Mohammad, Virdee, Bal Singh, Andújar, Aurora, Anguera, Jaume and Limiti, Ernesto (2017) Frequency Beam Steering Antenna for Millimeter Wave Checkpoint Scanners. In: European Microwave Week, 8-13 November 2017, Nuremberg, Germany.


Millimeter wave scanners are the most prevalent nearfield imaging passenger security systems. The paper describes a planar antenna to replace multiple antennas used in millimeter wave security checkpoints. The antenna is compact in size and capable of frequency scanning over an angle of -50 o to 15o. It operates across FCC’s frequency range of 24.25 GHz to 30 GHz for full-body airport scanners. The antenna structure, which is based on cheap microstrip technology, is simple to design and fabricate. The proposed antenna consists of a linear array of 1×4 radiating elements. The measured results conforms the antenna exhibits a maximum gain and radiation efficiency measured are 6.75 dBi and 82.34%, respectively, at 27.5 GHz.

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