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In this paper, an innovative design of a miniaturized heterogeneous 3DIC-based wireless sensor node (WSN) is proposed. The design contains stacks of radio frequency (RF) die, mixed-signal die, digital die, and integrated antenna die using the through silicon via (TSV) technology. Significant enhancements to the existing 2D design and verification flow are developed to solve the critical concerns of...
This paper reports a low power transceiver designed for wearable medical healthcare system. Based on a novel energy-efficient wideband wireless communication scheme that uses human body as a transmission medium, the transceiver can achieve a maximum 15 Mbps data rate with total receiver sensitivity of -30 dBm. The chip measures only 0.56 mm2 and was fabricated in the SMIC 0.18 um 1P6M RF CMOS process...
Due to lacking capability of simultaneously gathering information from the embedded system devices and networks, neither WSN simulators nor testbeds could explain how an abnormal exception in the embedded system would influence the network behaviors, and how the network congestion may possibly damage the health of the system on a single node. In this paper, to observe the WSN behavior from both network...
Development in micro-electronic-mechanical systems (MEMS), wireless communications and digital electronics recently have made it possible to develop small size, low-power, low-cost sensor devices. Such devices can integrate data processing, communications and sensing capabilities. A wireless sensor network (WSN) consists of a group of sensors, or nodes, linked by a wireless medium (infrared or radio...
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