Results 201 to 210 of about 43,693 (225)
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RFID reader localization using passive RFID tags
2009 Asia Pacific Microwave Conference, 2009This paper describes an indoor wireless localization method of an RFID reader using passive tags placed at known locations. The reader location is estimated using the received signal strength indication (RSSI) and trilateration. However, in an indoor wireless environment, the RSSI undergoes fading due the presence of unavoidable scatterers.
Mohd Yazed Ahmad +1 more
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Proceedings of the 2005 joint conference on Smart objects and ambient intelligence: innovative context-aware services: usages and technologies, 2005
This communication covers the design and optimization of antennas for RFID tags at UHF and microwave frequencies. Such design will focus on the specific characteristics of RFID applications such as back-scattering mode, variability of substrates and low cost constraints. The introduction includes a short history of RFID development.
Smail Tedjini +2 more
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This communication covers the design and optimization of antennas for RFID tags at UHF and microwave frequencies. Such design will focus on the specific characteristics of RFID applications such as back-scattering mode, variability of substrates and low cost constraints. The introduction includes a short history of RFID development.
Smail Tedjini +2 more
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2015 Loughborough Antennas & Propagation Conference (LAPC), 2015
This paper presents a two-port antenna for a passive RFID tag including separate receiving and transmitting ports for direct connection to a hybrid UHF/UWB RFID transponder chip. The receiving port feed is linearly polarized and narrowband for energy harvesting (from a conventional RFID reader), whereas the transmitting port feeds ultrawideband (UWB ...
Mohamad Ali Ziai, C. Batchelor John
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This paper presents a two-port antenna for a passive RFID tag including separate receiving and transmitting ports for direct connection to a hybrid UHF/UWB RFID transponder chip. The receiving port feed is linearly polarized and narrowband for energy harvesting (from a conventional RFID reader), whereas the transmitting port feeds ultrawideband (UWB ...
Mohamad Ali Ziai, C. Batchelor John
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2009
Radio frequency identification (RFID) in the form of tags or transponders is a means of auto-ID that can be used for tracking and monitoring objects, both living and non-living. One of the first applications of RFID was in the 1940s within the US Defense Force (Hodges & McFarlane, 2004, p. 59).
Katina Michael, M.G. Michael
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Radio frequency identification (RFID) in the form of tags or transponders is a means of auto-ID that can be used for tracking and monitoring objects, both living and non-living. One of the first applications of RFID was in the 1940s within the US Defense Force (Hodges & McFarlane, 2004, p. 59).
Katina Michael, M.G. Michael
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2006 IEEE Antennas and Propagation Society International Symposium, 2006
This paper presents the design of an asymmetric RFID antenna with length smaller than /spl lambda//4 and at the same time achieves the special requirement of the input impedance and also balanced input feed for the tag chip circuit. The antenna has been fabricated and tested by a network analyzer. The antenna design and its performance are presented in
null Chi Ho Cheng, R.D. Murch
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This paper presents the design of an asymmetric RFID antenna with length smaller than /spl lambda//4 and at the same time achieves the special requirement of the input impedance and also balanced input feed for the tag chip circuit. The antenna has been fabricated and tested by a network analyzer. The antenna design and its performance are presented in
null Chi Ho Cheng, R.D. Murch
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2017
This study has investigated a practically important problem of unknown tag detection that aims to detect the existence of unknown tags in a time-and energy-efficient way. We have proposed a new SBF which is a general case of the standard BF. Based on the new filtering technique, we have further proposed the SBF-UDP. Sufficient theoretically analysis is
Alex X. Liu +3 more
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This study has investigated a practically important problem of unknown tag detection that aims to detect the existence of unknown tags in a time-and energy-efficient way. We have proposed a new SBF which is a general case of the standard BF. Based on the new filtering technique, we have further proposed the SBF-UDP. Sufficient theoretically analysis is
Alex X. Liu +3 more
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Complementary RFID tag antennas
2023This thesis is mainly concerned with the investigation of a systematic approach to selecting tag antennas whose electromagnetic properties are compatible with the platforms on which they are supported and the immediate environment in which they are to be operated. The work is divided into three parts.
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2017
The key technical contribution of this chapter is in proposing a protocol to detect and identify missing tag events in the presence of unexpected tags. This chapter represents the first effort on addressing this important and practical problem. The key technical depth of this chapter is in the mathematical development of the theory that RUND and RUNI ...
Alex X. Liu +3 more
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The key technical contribution of this chapter is in proposing a protocol to detect and identify missing tag events in the presence of unexpected tags. This chapter represents the first effort on addressing this important and practical problem. The key technical depth of this chapter is in the mathematical development of the theory that RUND and RUNI ...
Alex X. Liu +3 more
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RFID Tagging of Pharmaceuticals
2008Pharmaceuticals play a more prominent role in American health care than in any other nation. The North American market today comprises 47% of the global prescription drug market, which now exceeds half a trillion dollars, with Americans spending approximately $251.8 billion annually on pharmaceuticals.
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The invention refers to an Radio Frequency Identification (RFID) tag (3) configured for communicating with an Radio Frequency Identification (RFID) reader (1), wherein said RFID tag (3) is configured to receive a query command from said RFID reader (1), to measure a duration of a TRcal signal comprised by said query command, and to determine an ...
Robert, Jörg +2 more
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Robert, Jörg +2 more
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