Proximity‐coupled feed patch antenna array for 79 GHz automotive radar | Zendy

Tian Haiyan | Zendy; Liu Changjiang | Zendy; Gu Xiang | Zendy

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Proximity‐coupled feed patch antenna array for 79 GHz automotive radar

Author(s) -

Tian Haiyan,

Liu Changjiang,

Gu Xiang

Publication year - 2019

Publication title -

the journal of engineering

Language(s) - English

Resource type - Journals

ISSN - 2051-3305

DOI - 10.1049/joe.2019.0262

Subject(s) - patch antenna , antenna factor , antenna measurement , microstrip antenna , antenna efficiency , radiation pattern , antenna tuner , coaxial antenna , computer science , antenna gain , antenna (radio) , antenna noise temperature , acoustics , electronic engineering , electrical engineering , physics , telecommunications , engineering

Autonomous driving is becoming a reality‐but low‐cost 79 GHz radar antenna technology is still imperfect. Here, the authors propose a kind of proximity‐coupled feed patch antenna array. By reducing the non‐linear mutual interference between the transmission line and the radiating elements, the antenna's operating bandwidth is improved and the antenna gain is increased. Moreover, the consistency of the antenna radiation pattern at different frequencies is also improved. The simulation results show that the antenna has a −10 dB impedance bandwidth from 76 to 81.4 GHz, and the gain is >14.8 dB. Within the operating frequency band, the antenna main lobe width is smaller than ±1.2°

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