| 1. |
- Kanth, Rajeev Kumar, et al.
(författare)
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Evaluating Sustainability, Environmental Assessment and Toxic Emissions during Manufacturing Process of RFID Based Systems
- 2011
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Ingår i: Dependable, Autonomic and Secure Computing (DASC), 2011 IEEE Ninth International Conference on. - 9781467300063 ; , s. 1066-1071
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Konferensbidrag (refereegranskat)abstract
- The present state of the art research in the direction of embedded systems demonstrate that analysis of life-cycle, sustainability and environmental assessment have not been a core focus for researchers. To maximize a researcher's contribution in formulating environmentally friendly products, devising green manufacturing processes and services, there is a strong need to enhance life-cycle awareness and sustainability understandings among embedded systems researchers, so that the next generation of engineers will be able to realize the goal of a sustainable life-cycle. In this work an attempt has been made to investigate and evaluate the life-cycle management and environmental assessment in fabricating processes of the RFID based systems. We have chosen a general life cycle assessment approach which involves the collection and evaluation of quantitative data on the inputs and outputs of materials and energy associated with the RFID based systems. Based on the developed generic models, we have obtained the results in terms of environmental emissions for a production of paper substrate printed RFID antennas. We also make an attempt to raise several sustainability issues and quantify the toxic emissions during the manufacturing process.
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| 2. |
- Kanth, Rajeev Kumar, et al.
(författare)
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Study on Glass-Epoxy-Based Low-Cost and Compact Tip-Truncated Triangular Printed Antenna
- 2012
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Ingår i: International Journal of Antennas and Propagation. - : Hindawi Publishing Corporation. - 1687-5869 .- 1687-5877. ; , s. 184537-
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Tidskriftsartikel (refereegranskat)abstract
- Printed antennas based on glass epoxy substrate have been developed. On the basis of required specifications and assigned frequencies, tip-truncated triangular printed antennas have been designed, analyzed, and fabricated. The performances of the antennas have been measured in terms of return loss, frequency of operation, bandwidth, and radiation pattern. Triangular microstrip antenna (TMSA) configuration consisting of copper as active radiating patch and glass epoxy as dielectric substrate has been screened out to achieve the essential characteristics and satisfying recommended low-cost antenna. The Method of Moment (MOM) analyzing techniques have been employed to realize the required specific properties, whereas optimized tip truncation technique and varying feed point location give rise to suitable LHCP or RHCP configuration of the printed antenna. The coaxial probe signal feed arrangement have been considered for this work. The proposed printed antennas are suitable for communication links between ships or buoys and satellites specially for navigation purpose.
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| 3. |
- Ahmad, Waqar, et al.
(författare)
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Fast Transient Simulation Algorithm for a 3D Power distribution Bus
- 2010
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Ingår i: Proceedings of IEEE Asia Symposium on Quality Electronic Design. ; , s. 343-350
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Konferensbidrag (refereegranskat)abstract
- Extensive transient simulations for on-chip power delivery networks are required to analyze power delivery fluctuations caused by dynamic IR and Ldi/dt drops. Speed and memory has become a bottleneck for simulation of power distribution networks in modern VLSI design where clock frequency is of the order of GHz. The traditional SPICE based tools are very slow and consume a lot of memory during simulation. The problem is further aggravated for huge networks like power distribution network within a stack of ICs inter-connected through TSVs. This type of 3D power distribution network may contain billions of nodes at a time. In this paper we proposed a faster transient simulation algorithm using visual C++. First we reduce 3D power distribution bus containing n nodes to a two terminal 7 network. Then we solve this two terminal reduced network for voltages and currents. After this, we apply back solving algorithm to the network to solve it for each of the intermediate nodes using visual C++. The proposed algorithm is quite accurate with 1-2% error when compared with Ansoft Nexxim4.1. The proposed algorithm is several times faster than Ansoft Nexxim as well as consumes significantly less memory as compared to Nexxim.
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| 4. |
- Ahmad, Waqar, et al.
(författare)
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Power distribution TSVs induced core switching noise
- 2011
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Ingår i: Electrical Design of Advanced Packaging & Systems Symposium (EDAPS), 2010 IEEE. - : IEEE conference proceedings. - 9781424490691
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Konferensbidrag (refereegranskat)abstract
- Size of on-chip interconnects as well as the supply voltage is reducing with each technology node whereas the operating speed is increasing in modern VLSI design. Today, the package inductance and resistance has been reduced to such an extent that core switching noise caused by on-chip inductance and on-chip resistance is gaining importance as compared to I/O drivers switching noise. Both on-chip inductance and skin effect are prime players at frequencies of the order of GHz. The problem is further aggravated when chips are interconnected through TSVs to form a 3D integrated stack in order to achieve low form factor and high integration density. In this paper we analysed peak core switching noise in a 3D stack of integrated chips interconnected through power distribution TSV pairs, through our comprehensive mathematical model which has been proved to be quite accurate as compared to SPICE. We analysed the effect of number of chips in a 3D stack, rise time, decoupling capacitance, and skin effect on power distribution TSVs induced core switching noise in this paper.
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| 5. |
- Amin, Yasar, et al.
(författare)
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Green wideband RFID tag antenna for supply chain applications
- 2012
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Ingår i: IEICE Electronics Express. - : Institute of Electronics, Information and Communications Engineers (IEICE). - 1349-2543. ; 9:24, s. 1861-1866
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Tidskriftsartikel (refereegranskat)abstract
- In this paper, we demonstrate an RFID tag antenna manufactured by advanced inkjet printing technology on paper substrate using novel hole-matching technique for reducing the consumption of substrate material and conductive ink while attaining green RFID tags. In-depth electromagnetic analysis is performed methodologically for optimizing the parameters that effectuate the antenna dimensions. The antenna design is optimized for consistent wideband performance and extended read range throughout the complete UHF RFID band (860-960MHz), while exhibiting benchmarking results when n across cardboard cartons filled with metal or water containing objects.
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| 6. |
- Amin, Yasar, et al.
(författare)
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Performance-optimized Printed Wideband RFID Antenna and Environmental Impact Analysis
- 2024
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Ingår i: ETRI Journal. - Korea : ETRI. - 1225-6463 .- 2233-7326.
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents performance optimized RFID tag antenna, developed by using commercially accessible paper substrates and advanced inkjet printing process to guarantee mechanical flexibility and ultra-low production costs. The proposed antenna structure can endure the variations which emerge in electromagnetic properties of paper substrate due to varying environmental effects. Hole-matching technique is implemented to eliminate the matching network for reducing the consumption of conductive ink. The proposed structure is uniquely evaluated by demonstrating, sustainability and environmental impact analysis that validate the potential for ultra-low cost mass production of RFID tags for future generation of organic electronics. The antenna performance is assessed for cardboard cartons exclusively containing metal cans and water bottles. The experimental characterization of the proposed antenna endorses the wider bandwidth to cover UHF RFID ISM band (860-960MHz), which empowers its usage throughout the globe for supply chain applications. The improved design effectuates return loss of better than -15dB over a wide frequency range while exhibiting outstanding readability from 10.1 meters.
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| 7. |
- Kanth, Rajeev Kumar, et al.
(författare)
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Investigation and Evaluation of Life Cycle Assessment of Printed Electronics and its Environmental Impacts Analysis
- 2010
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Konferensbidrag (refereegranskat)abstract
- This paper presents cradle to gate life cycle assessment of printed electronics resources. In this work an attempt has been made to investigate and evaluate the life cycle assessment and the environmental impacts of printed electronics resources such as printed RFID antenna. Life cycle inventory analysis for these resources has been carried out to quantify total systems’ inputs and outputs that are relevant to environmental impact especially emissions to air, fresh water. We have also compared printed flexible substrate structure based on polymer substrate with inkjet material deposition to more traditional PCB technology. The chosen approach can be easily relevant to other flexible substrates and materials or device structures.
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| 8. |
- Wan, Qiansu, et al.
(författare)
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Environmental Impacts Analysis for Inkjet Printed Paper-based Bio-patch
- 2015
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Ingår i: Journal of Multidisciplinary Engineering Science and Technology. - 2458-9403. ; , s. 837-847
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents comparative environment impact evaluation and assessment between inkjet printing technology based Electrocardiography (ECG) Bio-patch and traditional Printed Circuit Board (PCB) based ECG Holters. Due to the complexity of electronic systems and the consistent lack of solid data about a product’s life cycles, a limited comparison has been carried out to qualify the input and output of raw material resources, energy resources used in manufacturing phases and environmental emissions in end-of-life phases. Based on the GaBi’s balance calculation methodology, a case study is described to illustrated the possibility of environmental potential benefits from above mentioned technologies.
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