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There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
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Title: Theory and Design of Next-generation Retrodirective Tags and Their Channels
Committee:
Dr. Durgin, Advisor
Dr. Barry, Chair
Dr. Peterson
Abstract:
The objective of the proposed research is to design a low-power, less-complex retrodirective radio-frequency identification (RFID) tag, evaluate its electromagnetic performance, and model its wireless channel. The use of retrodirective tags is inevitable for a complete and reliable integration of next-generation RFID tags and Internet-of-things (IoT) sensors with future generation of wireless technologies such as mm-wave and massive multiple-input multiple-output (MIMO) communications. The benefits of using retrodirective tags are summarized in three major points: First, since retrodirective tags that operate at microwave and mm-wave frequencies have similar propagation properties—in terms of power losses and field-of-view—to the current RFID tags, which operate at ultra-high frequency (UHF) band, high-frequency retrodirective tags maintain the same coverage distance as the UHF tags and permit faster data rate because of the spectrum availability at microwave and mm-wave regimes. Second, retrodirective tags reduce the randomness of the backscatter RFID channel by changing the small-scale statistical behavior of the channel from double- to single-fading statistics, much like current wireless channels. Third, by sharing some of the spectral bands with future wireless technologies, retrodirective tags would enable fast, compact, and complete wireless connectivity.
