K. Lomakin, D. Simon, M. Sippel, K. Helmreich, E. Seler, Z. Tong, Ralf Reuter, G. Gold
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3D Printed Slotted Waveguide Array Antenna for Automotive Radar Applications in W- Band
In this work, for the first time, a 3D printed slotted waveguide array antenna with 12 radiating elements and a differential feed design for W-band is presented. A gain of 12 dBi is achieved with a half power beam width of 6° and a side lobe level of 19 dB due to the optimized radiating slot elements position and geometry. The tilt angle remains within 2° in the frequency range from 75 GHz to 82 GHz and within only 1° from 77 GHz to 82 GHz respectively. A well known concept is applied to improve metal plating process and thus, allow for a complex differential feed structure.
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