| 1. |
- Ablikim, M., et al.
(author)
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Measurements of (XcJ)-> K+K-K+K- decays
- 2006
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In: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 642:3, s. 197-202
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Journal article (peer-reviewed)abstract
- Using 14M psi(2S) events taken with the BESII detector, chi(cJ) -> 2(K+K-) decays are studied. For the four-kaon final state, the branching fractions are B(chi(c0,1,2) ->.2(K+K-)) = (3.48 +/- 0.23 +/- 0.47) x 10(-3), (0.70 +/- 0.13 +/- 0.10) x 10(-3), and (2.17 +/- 0.20 +/- 0.31) x 10(-3). For the phi K+K- final state, the branching fractions, which are measured for the first time, are B(chi(c0,1,2) -> phi K+K-) = (1.03 +/- 0.22 +/- 0.15) x 10(-3), (0.46 +/- 0.16 +/- 0.06) x 10(-3), and (1.67 +/- 0.26 +/- 0.24) x 10(-4). For the phi phi final state, B(chi(c0,2) -> phi phi) = (0.94 +/- 0.21 +/- 0.13) x 10(-3) and (1.70 +/- 0.30 +/- 0.25) x 10(-3).
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| 2. |
- Rong, Liang, et al.
(author)
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High Efficiency RF Transmitter System Architecture Investigation for Mobile WiMAX Applications
- 2008
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Other publication (other academic/artistic)abstract
- Wireless broadband digital communicationsystems are facing more and more critical power efficiencyproblems. Crest Factor (PAPR) is reported to be in 10-12dBrange for WiMAX 802.16e systems implementing OFDMIFFT-1024 and 64-QAM modulation. In this work,outphasing (LINC) and Polar transmitter architectures areinvestigated and compared with Direct Conversionarchitecture. Complete system solution targeting 23dBmoutput power is evaluated. Simulation result shows LINCconsumes more power than DC if non-clipping modulationscheme used and its complete system efficiency may not be ashigh as expected when linear combiner used. And polarsystem has stringent 3 degree phase matching and 0.5dB gainmatching requirements constrained by RCE and spectrummask specifications.
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| 3. |
- Zheng, Linlin, et al.
(author)
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Design and implementation of a fully reconfigurable chipless RFID tag using inkjet printing technology
- 2008
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In: Proceedings - IEEE International Symposium on Circuits and Systems. - 9781424420780 ; , s. 1524-1527
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Conference paper (peer-reviewed)abstract
- In this paper, a novel fully reconfigurable chipless RFID tag has been presented. 8-bit data are encoded by impedance mismatches along transmission line. Inkjet printing is used to reconfigure for special tag IDs. By integrating inkjet printing technology, printable tags are not only economically feasible but also technically efficient. The remarkable idea has been successfully validated both by simulation and experimental measurements.
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| 4. |
- Zou, Zhuo, et al.
(author)
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An efficient passive RFID system for ubiquitous identification and sensing using impulse UWB radio
- 2007
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In: Elektrotechnik und Informationstechnik. - : Springer Science and Business Media LLC. - 0932-383X. ; 124:11, s. 397-403
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Journal article (peer-reviewed)abstract
- The next generation RFID system for ubiquitous identification and sensing requires both energy and system efficiency. This paper describes an efficient passive RFID system using impulse ultra-wideband radio (IR-UWB), at a 10 m operation range. Unlike conventional passive RFID systems which rely on backscatter and narrowband radio, IR-UWB is introduced as the uplink (communication from a tag to a reader). By utilizing a specialized communication protocol and a novel ALOHA-based anti-collision algorithm, such semi-UWB systems enable a high network throughput (2000 tag/sec) under the low power and low cost constraint. A low power tag design for proof of concept is finally presented.
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| 5. |
- Ahmad, Waqar, et al.
(author)
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Power Integrity Optimization of 3D Chips Stacked Through TSVs
- 2009
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In: ELECTRICAL PERFORMANCE OF ELECTRONIC PACKAGING AND SYSTEMS. - NEW YORK : IEEE. - 9781424444489 ; , s. 105-108
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Conference paper (peer-reviewed)abstract
- On-chip power distribution network model for simultaneous switching of 3D ICs stacked through TSVs to choose TSV pattern, maximum number of chips in a stack and location of the decoupling capacitor for early design trade-offs.
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| 6. |
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| 7. |
- Amin, Yasar, et al.
(author)
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Design and Analysis of Efficient and Compact Antenna for Paper Based UHF RFID Tags
- 2008
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In: ISAPE 2008. - NEW YORK : IEEE. - 9781424421923 ; , s. 62-65
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Conference paper (peer-reviewed)abstract
- Paper substrate is one of the paramount nominees for Radio Frequency Identification (RFID) tags but at the same time it is extremely prone towards environmental changes. In this paper, antennas for UHF RFID tags on paper based substrate are investigated and analyzed for the first time to evaluate the effect of change in dielectric constant on the antenna parameters and performance. On the basis of analysis a concrete meander line antenna is proposed, designed and evaluated which has tremendous immunity towards variation in dielectric constant.
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| 8. |
- Amin, Yasar, et al.
(author)
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Design and Characterization of Efficient Flexible UHF RFID Tag Antennas
- 2009
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In: 2009 3RD EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION. - NEW YORK : IEEE. - 9781424447534 ; , s. 2682-2684
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Conference paper (peer-reviewed)abstract
- In this paper meander line antennas with end tip loading, designed for UHF RFID tags are presented. These novel antennas are screen printed on Kapton HN for European frequency band (866-868 MHz) and for North American frequency band (902-928 MHz). Asahi ink is used for screen printing of 25 mu m thick antenna traces which remains conductive even after several times sharp bending of these tag antennas. The results show that the antennas exhibit high performance regarding smaller area, high realized gain and better return loss in the frequency band of interest. These antennas are extremely flexible which give autonomy for their applications.
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| 9. |
- Amin, Yasar, et al.
(author)
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Inkjet Printed Paper Based Quadrate Bowtie Antennas For UHF RFID Tags
- 2009
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In: 11TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY, VOLS I-III, PROCEEDINGS, - UBIQUITOUS ICT CONVERGENCE MAKES LIFE BETTER!. - TAEJON : ELECTRONICS TELECOMMUNICATIONS RESEARCH INST. - 9788955191387 ; , s. 109-112
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Conference paper (peer-reviewed)abstract
- Paper substrate is one of the paramount nominees for Radio Frequency Identification (RFID) tags, for the reason that it is one of the widely and the cheapest available substrates. In this paper, for the first time quadrate bowtie antennas with round corners [1] are realized and analyzed on paper substrate for UHF RFID tags. These inkjet printed antennas exhibit high performance which give freedom for their applications. Their area is smaller than the general triangle bowtie antenna and have advantages of smaller area, better return loss in high frequency and higher gain in normal direction of antenna plane compared with general triangular bowtie antenna.d
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| 10. |
- Amin, Yasar, et al.
(author)
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Low Cost Paper Based Bowtie Tag Antenna for High Performance UHF RFID Applications
- 2009
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In: NANOTECH CONFERENCE & EXPO 2009, VOL 1, TECHNICAL PROCEEDINGS - NANOTECHNOLOGY 2009. - BOCA RATON : CRC PRESS-TAYLOR & FRANCIS GROUP. - 9781439817827 ; , s. 538-541
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Conference paper (peer-reviewed)abstract
- Radio frequency identification (RFID) antenna's versatility in terms of complete coverage of UHF RFID band (860-960 MHz), while keeping the cost factor low, is an important aspect of today's growing demand for security and tracking of multiple objects in a very short time in addition to tag's readability across the globe. This paper presents a novel inkjet printed rounded corner bowtie antenna with T-matching stubs on paper substrate which is the cheapest and widest available substrate. The antenna exhibits compact size with outstanding read range.
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