Global warming concerns, along with international agreements and regulations, reflect a broader effort to change the public's high energy demand in recent years. Smart public lighting systems are gaining popularit...
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Global warming concerns, along with international agreements and regulations, reflect a broader effort to change the public's high energy demand in recent years. Smart public lighting systems are gaining popularity due to their energy-saving capabilities, reduction in carbon dioxide emissions, and improved public comfort. However, transitioning to smart public lighting requires careful planning and multiple stages. This is not only to accommodate public behavior, revise scenarios, and test citizen acceptance but also due to the necessary infrastructure investments. Smart public lighting incorporates new technologies, often with a breakeven point that takes several years to reach. To promote the widespread adoption of smart public lighting, it is essential to produce relatively expensive components in large quantities and explore cost-effective solutions. This research focuses on investigating a cost-effective photoelectric sensor for smart public purposes. The primary originality of this study lies in identifying a cost-effective photoelectric sensor that can replace technically equivalent but more expensive sensor solutions for indoor and outdoor lighting control purposes.
This report presented a beam steering dipole antenna on incorporate polymeric and High Impedance Surface (HIS). In order to achieve the reconfigurability, two radio frequency (RF) switches are implemented on the anten...
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ISBN:
(纸本)9781467381710
This report presented a beam steering dipole antenna on incorporate polymeric and High Impedance Surface (HIS). In order to achieve the reconfigurability, two radio frequency (RF) switches are implemented on the antenna. By manipulating the RF switch state, the antenna is capable of reconfiguring its beam into two different directions at 28° and -28°. The RF switch will affected the antenna gain due to the electronic losses, thus High Impedance Surface (HIS) is applied on the antenna. In order to enhance the antenna bandwidth, a polymeric material is employed. With a dimension of 27.45 × 50.7 mm, the antenna has potential to sustain the gain of 6.27 dB and 1.24 GHz of bandwidth for all states.
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