Based on the complexities of the tin mining tunnels and on the variety of activities carried out in these mines, it is necessary to improve the existing tunnel monitoring system. This study proposes an Energy Efficien...
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Person re-identification (Re-ID) is an important research field in computer vision and pedestrian detection. However, there are many complex and highly uncertain factors in the real world, such as occlusion, appearanc...
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Wireless Sensor network (WSN) clustering is useful for developing routing algorithms that improves the scalability and longevity of the network. Cluster Head (CH) is essential for data transmission in the clustered WS...
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The IOTA Tangle represents a promising alternative to blockchain technology, particularly for the Internet of Things (IoT) environment. However, ensuring efficiency and fairness in transaction processing remains a sig...
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Unmanned Aerial Vehicles (UAVs) are increasingly recognized for their potential to revolutionize emergency response communications and localization, especially when traditional infrastructure is damaged or non-existen...
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Aiming at the complicated calculation and low time efficiency, a rolling bearing fault diagnosis method based on three-path parallel multi-scale convolution network is proposed. Firstly, continuous wavelet transform i...
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With the development of artificial intelligence and machine learning, automatic code vulnerability detection methods based on machine learning and deep learning have been gradually applied. However, the false alarm ra...
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At present, the technology of the Internet of Things is not yet perfect. Due to the limited resources of nodes in the network, it is vulnerable to attacks and various possible attack methods, which pose great challeng...
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This article discusses the utilization of a dual polarization antenna on a perpendicular strip line, including a fractal narrow slit, for a global positioning system (GPS), 4G Long Term Evolution (LTE), and a 5G commu...
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ISBN:
(纸本)9798350381566;9798350381559
This article discusses the utilization of a dual polarization antenna on a perpendicular strip line, including a fractal narrow slit, for a global positioning system (GPS), 4G Long Term Evolution (LTE), and a 5G communication network. The proposed antenna consists of a perpendicular strip line that couples the electromagnetic field to a fractal narrow slit, allowing resonance at frequencies of 1.74 GHz and 2.675 GHz. Additionally, it has the capability to facilitate circular polarization for GPS applications and linear polarization for 4G&5G communication networks. The proposed antenna has an impedance characteristic of essentially 22.41% and 9.40% for S11 at frequencies of 1.74 GHz and 2.675 GHz, respectively. At 1.575 GHz, 1.74 GHz, and 2.675 GHz, the antenna's identified peak gains are approximately 2.3 dBi, 2.8 dBi and 3.86 dBi, respectively. Moreover, the proposed antenna has the capability to generate a radiation pattern that propagates in two opposing directions, enabling the efficient exploitation of both GPS and 4G&5G communication network.
Electrical fires have become the primary cause of fires in heritage buildings, and the electrical fire monitoring system can monitor electrical fire hazards in the power distribution system, which plays an important r...
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