Browsing by Author "Chen, Meng-Jie"

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Automatic Rack Cabinet Management System for Data Center
(2013)
Yuan, Shyan-Ming
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Chiang, Chuan-Yen
;
Chen, Meng-Jie
;
Chen, Yen-Lin
;
資訊工程學系
With the evolution of computer science technology the concept of clouds are kept booming. The management of a large number of computer and peripheral equipment becomes an important issue. For centrally managing such a large number of computers and peripheral equipment scattered in many long-distance locations, the IP-based peripheral equipment is presented in the market today. The smart automatic management which includes automatically handling the common equipment status and controlling the number of running computer is neglected. In addition, managers will usually want a semantic way to think about how to control these devices. This paper presents a user-configurable semantic control system which allows users define their own automation control processes. The prediction of computer status is used for energy control, and the intelligent home language SHPL is also adopted to describe the semantics of the process. The system achieves the cross-device automatic management using device status and the power-saving functionality is also provided.
Compact Millimeter-wave Triband Quasi-Yagi Antenna for 5G and WiGig Applications
(2019-01-01)
Chen, Meng-Jie
;
Liu, Nai-Chen
;
Xue, Wei-Ren
;
Tarng, Jenn-Hwan
;
交大名義發表
Millimeter wave (mmWave) communication systems have become a potential candidate to deliver ultrahigh data throughput, e.g., 10 Gb/s owing to congestion in low frequency bands and requirements of high data throughput. According to FCC rules, 28, 37, 39 and 64-71 GHz bands have been suggested for next-generation wireless communication; in addition, Wireless Gigabit (WiGig) alliance also operates at an unlicensed 60 GHz band. Therefore, according to these proposed or developed wireless communication standards, we need multiband mmWave antennas. In this study, an antenna with a quasi-Yagi structure that consists of three arms and six spiral directors is proposed. To miniaturize the antenna, each arm plays multiple roles simultaneously, which include a driver, a reflector, a director, and/or an impedance matching network. In addition, the spiral directors are able to improve the antenna gain and enhance the impedance matching bandwidth at 60 GHz, simultaneously. The proposed antenna is compact (5 x 8 x 0.203 mm(3)) and the measurement results show that the antenna covers major 5G millimeter-wave bands (26.5-29.5 and 37-40 GHz) and the WiGig band (57-67 GHz). The measured peak gains of the proposed antenna are 6.2, 7.56 and 9.42 dBi, which correspond to 28, 38 and 60 GHz, respectively. The measured results confirm the good performances observed by electromagnetic simulations. The proposed mmWave triband antenna is suitable for mobile devices satisfying mmWave 5G and WiGig applications.