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Wireless Network-on-Chip (WNoCs) are introduced to improve the performance for long distance communication within a chip. The on-chip antennas utilized in these WNoCs can be omni-directional or bi-directional, broadcasting to every receiving antenna or directional only in a specific pairing, respectively. There are positives and negatives for both types of antennas, although bi-directional antennas...
This paper describes our design and proof-of-concept implementation of the Secondary User-Enhanced Spectrum Sharing (SUESS) radio that dynamically observes, understands, learns, plans, and adapts its spectrum sharing behaviors in an operating band that is shared with a noncooperative Primary User (PU) radio link. The SUESS radio leverages awareness of the PU's performance to drive the selection and...
A number of measurement based studies have demonstrated that adaptive steering of highly directional antenna beams can overcome higher path loss of signals at millimeter wave (mmW) frequencies. In this paper, we present a novel 60 GHz pattern reconfigurable antenna capable of steering its beams in both the azimuth and the elevation directions. The performance of this steerable antenna is evaluated...
Network-on-Chip (NoC) is a communication paradigm capable of facilitating a scalable interconnection infrastructure for multi core processors. Wireless NoCs have been introduced to improve the communication performance over long-distance processing nodes. Current on-chip antennas used in wireless NoCs communicate predominantly through surface waves, where the efficacy of the wireless nodes is partially...
In this study, we built a lumped component model for knit tag antennas. Comfortable, seamless, and wireless antennas were manufactured using conductive yarns and RFID technology. Knitting fabrication enabled rapid prototyping of these wearable antennas. Using the lumped component model, we optimized the geometry and knit structure of the antenna, resulting in improved radiation efficiency, reading...
We have applied passive Radio Frequency Identification (RFID), typically used for inventory management, to implement a novel knit fabric strain gauge assembly using conductive thread. As the fabric antenna is stretched, the strength of the received signal varies, yielding potential for wearable, wireless, powerless smart-garment devices based on small and inexpensive passive RFID technology. Knit...
SoC (System on chip) technology has rapidly developed in recent years, stimulating emerging research areas such as investigating the efficacy of wireless network interconnection within a single chip or between multiple chips. However the design of the on-chip antenna faces the challenge of obtaining high radiation efficiency and transmission gain due to conductive loss of the silicon substrate. A...
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