79 GHz three stacked cylindrical dielectric resonator antenna array for automotive radar systems

79 GHz three stacked cylindrical dielectric resonator antenna array for automotive radar systems

79 GHz
Antenna array
Automotive radar system
Short range radar
Stacked cylindrical dielectric resonator antennas

Very high gain and sharp radiation beam of an original antenna array design, made of 16 linear three stacked cylindrical dielectric resonator antennas (three ScCDRA), is proposed in this work for automotive short-range radar (SRR) applications operating at 79 GHz. Firstly, a single antenna which functions around 79 GHz and reaches a gain value up to 11.8 dB is designed with success by piling three cylindrical DRA having permittivity values, respectively, 17.9, 16.9, and 9. However, relatively near peak values, of the main and the side lobs, makes the preliminary design less efficient for vehicle radar applications. To get a radar design with enhance properties, such as lower return loss, higher gain and especially reduced radiation pattern side lobs, we proceeded with an array design of 16 linear antenna-elements (1×16). As results, the three ScCDRA array structure provides 21.3 dB as gain peak value, a very narrow angular half power beam width (HPBW) of radiation pattern of 0.7 degree at 79 GHz. Feeding network design and positions of the sixteen linear antenna-elements, within this array, have been extensively investigated to carry out an optimal design still resonating around 79 GHz with a lower S11 parameter value up to -40 dB and hilly directional characteristics of radiation diagram.

Abderrahim Haddad1, Azize Bhaij1, Mousa Hussein2, Mohssin Aoutoul1, Mohammed El Jourmi3, Elhadi Baghaz4, Said Dlimi1, Youssef Errami4, Abdellatif Obbadi4, Fadwa El Moukhtafi1, Redouane Jouali3

Journal homepage: http://telkomnika.uad.ac.id

Oct 18, 2024

PERI IRAWAN

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