Proceedings of the 39th conference on Design automation - DAC '02, 2002
... To estimate the dynamic power consumption in this multi-process interconnect network, we prop... more ... To estimate the dynamic power consumption in this multi-process interconnect network, we propose a new modeling ... In our approach, we manually map the switch fabric topologies into Thompson grids and estimate ... There are no internal buffers needed in its power modeling. ...
2010 IEEE International Conference on RFID (IEEE RFID 2010), 2010
In near-field (NF) applications, stacked UHF RFID tags are known to be less readable than the sta... more In near-field (NF) applications, stacked UHF RFID tags are known to be less readable than the stand-alone tags. It is also intuitively known that ¿weak spots¿ exist when more tags are stacked together, especially when the tags are placed closer to each other. However, ¿weak spots¿ in NF-RFID had not been theoretically analyzed in the past, nor had the phenomena
Printed RFID antenna is a promising solution for item- level tagging applications. In order to in... more Printed RFID antenna is a promising solution for item- level tagging applications. In order to integrate the antenna printing with the package printing process, it is highly preferred that antenna geometries are printed on paper substrates. However, the electromagnetic property and thickness of paper substrates are subject to change. Thus wideband and material- insensitive printed RFID antennas are desired. This paper presents an analytical model for wideband tag antenna designs. Two matching scenarios, i.e. single-tuned match and double- tuned match, are particularly discussed in detail. Two slim-line antennas printed on paper with screen printing technique are proposed. They benefit from the single-tuned/double-tuned bandwidth optimization and demonstrate a great potential in conductive ink saving. Influences of dielectrics on the bandwidth performance are also studied. It is demonstrated that the proposed double-tuned antenna can cover the whole UHF RFID band, and can tolerate a considerable variation in the permittivity like 1~9 on thin paper substrates.
2010 IEEE International Conference on RFID (IEEE RFID 2010), 2010
Platform-tolerant tag antennas are desired for ubiquitous RFID systems. Metal-mountable or wideba... more Platform-tolerant tag antennas are desired for ubiquitous RFID systems. Metal-mountable or wideband tag antennas can not guarantee platform-tolerance. This paper presents the design approaches of platform-tolerant tag antennas. A compact PIFA-type UHF tag antenna is proposed accordingly. Simulation and measurement results are provided to demonstrate the platform-tolerance feature of the proposed antenna and to validate the design approaches presented.
2010 IEEE Antennas and Propagation Society International Symposium, 2010
Lumped-element models and parameter extraction methods for OCA are vital to successfully integrat... more Lumped-element models and parameter extraction methods for OCA are vital to successfully integrating OCA with RFID tags. In this paper, a compact model for OCA at UHF band is proposed. Metal loss (skin and proximity effects) and substrate coupling are taken into account. Meantime, a fast and physics meaningful parameter extraction method is presented. Two OCA prototypes and one fully-integrated
2009 IEEE Antennas and Propagation Society International Symposium, 2009
As RFID deployment moves from pallet level to item level, UHF RFID has gained more and more momen... more As RFID deployment moves from pallet level to item level, UHF RFID has gained more and more momentum in NFC (near field communication) applications recently. Similar to HF RFID tags, UHF RFID tags in NFC also use inductive coupling antennas to interact with the readers. However, in item-level deployment, items with UHF RFID tags are often stacked closely and interrogated
2008 The 9th International Conference for Young Computer Scientists, 2008
Concerning the security weakness of EPC scheme especially on privacy concerned applications, an a... more Concerning the security weakness of EPC scheme especially on privacy concerned applications, an anonymous mutual authentication protocol is proposed for light-weight security inauguration on Class 1 Gen 2 UHF RFID (EPC C1G2) scheme. By utilizing the existing functions and memory bank of tag, we amend the processing sequence based on current EPC architecture. And an auto-updating index number IDS is
2011 IEEE International Symposium on Antennas and Propagation (APSURSI), 2011
Wideband RFID tag antennas are highly desired for global applications. Moreover, the wideband fea... more Wideband RFID tag antennas are highly desired for global applications. Moreover, the wideband feature makes tags less sensitive to the external detuning. This paper presents a circuit-based bandwidth-enhancement theory by applying the double-tuning technique to tag antennas. Conditions of the optimum double-tuning and the maximum bandwidth out of double-tuning are derived. Closed-form equations are provided to facilitate the bandwidth optimization
2012 IEEE International Conference on RFID (RFID), 2012
Power transfer between tag chip and tag antenna plays a critical role in determining the performa... more Power transfer between tag chip and tag antenna plays a critical role in determining the performance of passive UHF RFID systems. However, optimum power transfer is difficult to achieve due to parasitic capacitance introduced during the tag assembly process. Moreover, the parasitic capacitance leads to performance deviation and tag detuning. Thus it is highly desired to determine the parasitic capacitance
Application-Specific Systems, Architectures, and Processors, 2003
On-chip implementation of multiprocessor systems requires the planarization of the interconnect n... more On-chip implementation of multiprocessor systems requires the planarization of the interconnect network onto the silicon floorplan. Manual floorplanning approaches will become increasingly more difficult and ineffective as multiprocessor complexity increases. Compared with traditional ASIC architectures, multiprocessors have homogeneous processing elements and regular network topologies. Therefore, traditional ASIC floorplanning methodologies based on macro placement are not effective in this domain. In
A compact and reusable platform-tolerant RFID tag antenna with a novel feed method is proposed. T... more A compact and reusable platform-tolerant RFID tag antenna with a novel feed method is proposed. The radiator of this antenna consists of a pair of shorted patches, which can be seen as cavity-backed slot antenna or two PIFA antennas. A small loop pasted on paper is used to connect to RFID chip. With the loop size changing, the input impedance
Proceedings of the 39th conference on Design automation - DAC '02, 2002
... To estimate the dynamic power consumption in this multi-process interconnect network, we prop... more ... To estimate the dynamic power consumption in this multi-process interconnect network, we propose a new modeling ... In our approach, we manually map the switch fabric topologies into Thompson grids and estimate ... There are no internal buffers needed in its power modeling. ...
2010 IEEE International Conference on RFID (IEEE RFID 2010), 2010
In near-field (NF) applications, stacked UHF RFID tags are known to be less readable than the sta... more In near-field (NF) applications, stacked UHF RFID tags are known to be less readable than the stand-alone tags. It is also intuitively known that ¿weak spots¿ exist when more tags are stacked together, especially when the tags are placed closer to each other. However, ¿weak spots¿ in NF-RFID had not been theoretically analyzed in the past, nor had the phenomena
Printed RFID antenna is a promising solution for item- level tagging applications. In order to in... more Printed RFID antenna is a promising solution for item- level tagging applications. In order to integrate the antenna printing with the package printing process, it is highly preferred that antenna geometries are printed on paper substrates. However, the electromagnetic property and thickness of paper substrates are subject to change. Thus wideband and material- insensitive printed RFID antennas are desired. This paper presents an analytical model for wideband tag antenna designs. Two matching scenarios, i.e. single-tuned match and double- tuned match, are particularly discussed in detail. Two slim-line antennas printed on paper with screen printing technique are proposed. They benefit from the single-tuned/double-tuned bandwidth optimization and demonstrate a great potential in conductive ink saving. Influences of dielectrics on the bandwidth performance are also studied. It is demonstrated that the proposed double-tuned antenna can cover the whole UHF RFID band, and can tolerate a considerable variation in the permittivity like 1~9 on thin paper substrates.
2010 IEEE International Conference on RFID (IEEE RFID 2010), 2010
Platform-tolerant tag antennas are desired for ubiquitous RFID systems. Metal-mountable or wideba... more Platform-tolerant tag antennas are desired for ubiquitous RFID systems. Metal-mountable or wideband tag antennas can not guarantee platform-tolerance. This paper presents the design approaches of platform-tolerant tag antennas. A compact PIFA-type UHF tag antenna is proposed accordingly. Simulation and measurement results are provided to demonstrate the platform-tolerance feature of the proposed antenna and to validate the design approaches presented.
2010 IEEE Antennas and Propagation Society International Symposium, 2010
Lumped-element models and parameter extraction methods for OCA are vital to successfully integrat... more Lumped-element models and parameter extraction methods for OCA are vital to successfully integrating OCA with RFID tags. In this paper, a compact model for OCA at UHF band is proposed. Metal loss (skin and proximity effects) and substrate coupling are taken into account. Meantime, a fast and physics meaningful parameter extraction method is presented. Two OCA prototypes and one fully-integrated
2009 IEEE Antennas and Propagation Society International Symposium, 2009
As RFID deployment moves from pallet level to item level, UHF RFID has gained more and more momen... more As RFID deployment moves from pallet level to item level, UHF RFID has gained more and more momentum in NFC (near field communication) applications recently. Similar to HF RFID tags, UHF RFID tags in NFC also use inductive coupling antennas to interact with the readers. However, in item-level deployment, items with UHF RFID tags are often stacked closely and interrogated
2008 The 9th International Conference for Young Computer Scientists, 2008
Concerning the security weakness of EPC scheme especially on privacy concerned applications, an a... more Concerning the security weakness of EPC scheme especially on privacy concerned applications, an anonymous mutual authentication protocol is proposed for light-weight security inauguration on Class 1 Gen 2 UHF RFID (EPC C1G2) scheme. By utilizing the existing functions and memory bank of tag, we amend the processing sequence based on current EPC architecture. And an auto-updating index number IDS is
2011 IEEE International Symposium on Antennas and Propagation (APSURSI), 2011
Wideband RFID tag antennas are highly desired for global applications. Moreover, the wideband fea... more Wideband RFID tag antennas are highly desired for global applications. Moreover, the wideband feature makes tags less sensitive to the external detuning. This paper presents a circuit-based bandwidth-enhancement theory by applying the double-tuning technique to tag antennas. Conditions of the optimum double-tuning and the maximum bandwidth out of double-tuning are derived. Closed-form equations are provided to facilitate the bandwidth optimization
2012 IEEE International Conference on RFID (RFID), 2012
Power transfer between tag chip and tag antenna plays a critical role in determining the performa... more Power transfer between tag chip and tag antenna plays a critical role in determining the performance of passive UHF RFID systems. However, optimum power transfer is difficult to achieve due to parasitic capacitance introduced during the tag assembly process. Moreover, the parasitic capacitance leads to performance deviation and tag detuning. Thus it is highly desired to determine the parasitic capacitance
Application-Specific Systems, Architectures, and Processors, 2003
On-chip implementation of multiprocessor systems requires the planarization of the interconnect n... more On-chip implementation of multiprocessor systems requires the planarization of the interconnect network onto the silicon floorplan. Manual floorplanning approaches will become increasingly more difficult and ineffective as multiprocessor complexity increases. Compared with traditional ASIC architectures, multiprocessors have homogeneous processing elements and regular network topologies. Therefore, traditional ASIC floorplanning methodologies based on macro placement are not effective in this domain. In
A compact and reusable platform-tolerant RFID tag antenna with a novel feed method is proposed. T... more A compact and reusable platform-tolerant RFID tag antenna with a novel feed method is proposed. The radiator of this antenna consists of a pair of shorted patches, which can be seen as cavity-backed slot antenna or two PIFA antennas. A small loop pasted on paper is used to connect to RFID chip. With the loop size changing, the input impedance
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Papers by Terry Ye