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This work presents a novel approach to further decrease the thickness of the ultra thin perfect metamaterial absorbers by adjusting the geometric dimensions of the resonators. Both simulational and experimental results with a typical metamaterial absorber structure show that the thickness of the absorber decreases from ~8 μm to ~4 μm by increasing the width of the cross-resonator from 10 μm to 40...
The world is approaching a crisis: unprecedented population aging, rising chronic disease, and escalating health care cost. This calls for a new health care paradigm that embraces the wireless technologies. However, the integration of wireless technologies, such as IEEE 802.15.4 based ZigBee and IEEE 802.11b based Wireless Local Area Network (WLAN) in the wearable health monitoring system is aggravated...
The increasing number of sensors deployed in cars calls for new design approaches in intra-vehicle electronic control unit (ECU) networks. ZigBee wireless sensor networks are seen as a good candidate technology, since they can provide high-performance short-range communication with low power consumption, as well as mesh networking capabilities. One of the main questions to answer before adoption of...
In this work, we present a coexistence study for wireless body area networks (WBAN) and wireless local area networks (WLAN). The aim is to evaluate the feasibility of WBAN systems in realistic medical environments, assessing their robustness to interference. We focus on the evaluation of the impact of a collocated IEEE 802.11g WLAN interferer on the performance of IEEE 802.15.4/ZigBee transceivers,...
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