Wireless power IoT system using polarization switch antenna as polling protocol for 5G mobile network

Lee, Yang-Han; An-Sung, Wang; Liao, Yu-De; Lin, Tao; Chi, Yu-Jen; Wong, Ching‐Chang; Shinohara, Naoki; Yuan, Qiaowei; Chen, Qiang

doi:10.1109/wpt.2017.7953817

Cited by 9 publications

(5 citation statements)

References 8 publications

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“…Other technologies such as EH, renewable energy sources, WPT, and UDNs assist in achieving energy efficiency (SDG 7renewable energy) in 5G networks [23]. WPT is an important and attractive technology in 5G wireless networks since it is capable of supplying power to IoT endpoints, especially where the cost of maintenance is high, or the replacement of the battery is intractable (SDG 8 -economic growth) [35]. The authors in [36] suggested a scheme by applying the concept of effective energy efficiency, effective capacity, and simultaneous wireless power and information transfer (SWIPT) to achieve low latency and high-energy efficiency (SDG 7 -renewable energy).…”

Section: ) Terrestrial Communication Networkmentioning

confidence: 99%

5G Networks Towards Smart and Sustainable Cities: A Review of Recent Developments, Applications and Future Perspectives

et al. 2022

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5G wireless communication systems provide massive system capacity with high data rates, very short low-latency, and ultra-high reliability, in addition to high connection density with a positive experience on smart cities and the Internet of Things (IoT). Future networks are anticipated to revolutionize typical applications such as the enhanced mobile broadband services (EMBB), ultra-reliable low latency communication (uRLLC), and massive machine-type communications (mMTC) anywhere and everywhere. This rationalizes the need to investigate the sustainable elements of 5G networks in smart cities to understand how 5G networks can be more environmentally-friendly and energy-efficient. This paper aims to investigate how 5G networks can act as key enablers in achieving sustainability in smart cities, using a macroscopic review. An overview of 5G communication networks and several 5G technologies used in smart city applications to enhance sustainability is presented. This is followed by investigating the indicators that measure sustainability in 5G networks across the environmental, social, and economic dimensions; and subdimensions such as energy efficiency, power consumption, carbon footprint, pollution, cost, health, safety, and security. The results show that the majority of research papers focus on the environmental dimensions of sustainability (42%) when attempting to address sustainability in 5G systems and smart cities. The findings also showed a huge interest in the economic (37%) and social (21%) dimensions as well. Further, when examining the sub-dimensions, it was found that most of the studies focused on energy efficiency (20%), power consumption (17%), and cost (15%).INDEX TERMS 5G wireless communication system, Energy efficiency, Internet of things, Smart Cities, Sustainability.

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Section: ) Terrestrial Communication Networkmentioning

confidence: 99%

5G Networks Towards Smart and Sustainable Cities: A Review of Recent Developments, Applications and Future Perspectives

et al. 2022

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“…Dvices in the 5G Internet of Things (IoT) consume a large amount of energy. Although there have been many efforts to create power management policies, the sensor nodes' lifetimes still remain a performance bottleneck and make the wide-range deployment of IoT challenging [1], [2]. Regarding limited battery capacity, the wireless power transfer (WPT) technique is suitable for charging the battery [3].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Power Harvesting and Cyclostationary Spectrum Sensing in Cognitive Radios

Jang

2020

IEEE Access

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We expect that 5G will support a large volume of data traffic to provide various services with a low latency. This will inevitably require an increased amount of energy. Wireless power transfer needs a higher receiver sensitivity than data decoding. Increased electromagnetic fields may introduce harmful effects on living organisms. Fortunately, massive multiple-input and multiple-output (MIMO) can provide significant gains in radiated energy and spectral efficiencies. Cognitive radio and 5G are emerging technologies. In this paper, we show that cognitive spectrum sensing and power harvesting can be accomplished simultaneously. Energy detection (ED) with energy harvesting has been widely investigated. However, ED may not work at a low signal-to-noise ratio with a harsh signal fluctuation in millimeter-wave in 5G. Therefore, we focus on cyclostationary spectrum sensing in this paper. We show that the maximum likelihood cyclostationary detection that can be used for power harvesting is the power squared. The cyclic power can be conveniently harvested and used for spectrum sensing. INDEX TERMS Cognitive radios, cyclostationary spectrum sensing, massive MIMO, power harvesting.

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“…These devices have many applications such as navigation, driving assistance, video capture, and accept/reject incoming calls from a paired mobile phone. In addition to this, these devices developed for emerging technologies are expected to work with the Internet of Things (IoT) concept at 5G (fifth generation) frequencies [1,2]. 5G frequencies in many countries have been determined, and the main band intervals identified are given in Table 1 (unlicensed band ranges are specified in bold, italic) [3,4].…”

Section: Introductionmentioning

confidence: 99%

SAR analysis of tri-band antennas for a 5G eyewear device

Geyikoğlu

Polat

Kaburcuk

et al. 2020

Int. J. Microw. Wireless Technol.

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The goal of this study is to analyze the specific absorption rate (SAR) distribution of the projected 5G frequencies below 6 GHz and at Wi-Fi frequency (2.45 GHz) on a human head, for eyewear device applications. Two separate tri-band printed dipole antennas for this purpose are designed and fabricated at operating frequencies of 2.45/3.8/6 GHz for prototype-1 and at operating frequencies of 2.45/3.6/4.56 GHz for prototype-2. In order to obtain the desired frequencies: first, the prototypes of the proposed antennas are fine-tuned via Computer Simulation Technology Microwave Studio (CST) and then fabricated on the FR4 layer. The reflection coefficient (S11) is tested and the simulation results are confirmed. In order to analyze the effect of wearing a pair of glasses' frame including a tri-band 5G antenna, a frame is designed and produced via 3D printer with polylactic acid material which has high dielectric constant (ɛ r = 8.1). The SAR results of the proposed antennas have been examined for the cases where the antenna is embedded in the frame and is used alone. Both cases were analyzed by using the homogeneous specific anthropomorphic mannequin and the heterogeneous visible human head phantoms and the results have been evaluated in terms of SAR10 g values.

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Wireless power IoT system using polarization switch antenna as polling protocol for 5G mobile network

Cited by 9 publications

References 8 publications

5G Networks Towards Smart and Sustainable Cities: A Review of Recent Developments, Applications and Future Perspectives

5G Networks Towards Smart and Sustainable Cities: A Review of Recent Developments, Applications and Future Perspectives

Simultaneous Power Harvesting and Cyclostationary Spectrum Sensing in Cognitive Radios

SAR analysis of tri-band antennas for a 5G eyewear device

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