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Zhijian Lu - IEEE Xplore Author Profile

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In this paper, we designed a broadband and wide-beam quadrifilar helix antenna (QHA). By loading a ceramic dielectric ring around the QHA, the beamwidth is significantly broadened. Specifically, the antenna achieves a wide beamwidth of 146° (with gain greater than 0 dBic) and a 3 dB axial-ratio beamwidth (ARBW) exceeding 125°. Additionally, a low profile of 0.085 \lambda_0 is achieved due to the...Show More
In order to realize the rapid and stable recognition and automatic tracking of various complex roads by the intelligent vehicles, this paper proposes image processing and cascade Proportion Integration Differentiation (PID) steering and speed control algorithms based on CMOS grayscale cameras in the context of the national college student intelligent vehicle competition. First, the grayscale image...Show More