| 1. |
- Ahmad, Waqar, et al.
(författare)
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Modeling of peak-to-peak switching noise along a vertical chain of power distribution TSV pairs in a 3D stack of ICs interconnected through TSVs
- 2010
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Ingår i: 28th Norchip Conference, NORCHIP 2010.
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Konferensbidrag (refereegranskat)abstract
- On-chip power supply noise has become a bottleneck in 3D ICs as scaling of the supply network impedance has not been kept up with increasing device densities and operating currents with each technology node due to limited wire resources. In this paper we proposed an efficient and accurate model to estimate peak-to-peak switching noise, caused by simultaneous switching of logic loads along a vertical chain of power distribution TSV pairs in a 3D stack of ICs. The proposed model is quite accurate with only 2-3% difference from Ansoft Nexxim4.1 equivalent model. The proposed model is 3-4 times faster than Nexxim4.1 as well as consumes two times less memory as compared to Nexxim4.1equivalent model. We analyzed peak-to-peak switching noise along a vertical chain of power distribution TSV pairs by varying physical dimensions of TSVs and value of decoupling capacitance. We also thoroughly investigated the peak-to-peak noise sensitivity to TSV effective inductance and decoupling capacitance.
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| 2. |
- Ahmad, Waqar, et al.
(författare)
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Power Integrity Optimization of 3D Chips Stacked Through TSVs
- 2009
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Ingår i: ELECTRICAL PERFORMANCE OF ELECTRONIC PACKAGING AND SYSTEMS. - NEW YORK : IEEE. - 9781424444489 ; , s. 105-108
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Konferensbidrag (refereegranskat)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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| 3. |
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| 4. |
- Amin, Yasar, et al.
(författare)
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Design and Analysis of Efficient and Compact Antenna for Paper Based UHF RFID Tags
- 2008
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Ingår i: ISAPE 2008. - NEW YORK : IEEE. - 9781424421923 ; , s. 62-65
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Konferensbidrag (refereegranskat)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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| 5. |
- Amin, Yasar, et al.
(författare)
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Design and Characterization of Efficient Flexible UHF RFID Tag Antennas
- 2009
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Ingår i: 2009 3RD EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION. - NEW YORK : IEEE. - 9781424447534 ; , s. 2682-2684
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Konferensbidrag (refereegranskat)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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| 6. |
- Amin, Yasar, et al.
(författare)
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Inkjet Printed Paper Based Quadrate Bowtie Antennas For UHF RFID Tags
- 2009
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Ingår i: 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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Konferensbidrag (refereegranskat)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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| 7. |
- Amin, Yasar, et al.
(författare)
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Low Cost Paper Based Bowtie Tag Antenna for High Performance UHF RFID Applications
- 2009
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Ingår i: 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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Konferensbidrag (refereegranskat)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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| 8. |
- Amin, Yasar, et al.
(författare)
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Robust Flexible High Performance UHF RFID Tag Antenna
- 2009
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Ingår i: 2009 11TH ELECTRONICS PACKAGING TECHNOLOGY CONFERENCE (EPTC 2009). - NEW YORK : IEEE. - 9781424450992 ; , s. 235-239
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Konferensbidrag (refereegranskat)abstract
- This paper describes a novel Flexo, Screen and Inkjet printed rounded edges bowtie antenna with T-matching stubs on paper, Kapton (HN) and Teonex Q51 substrate. Paper 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. Kapton (HN) and Teonex Q51 are distinguished for their flexibility and reliability. The antenna exhibits compact size with outstanding read range of 4 meters and complete coverage of UHF RFID band (860-960 MHz). The results show extreme immunity of versatile antenna against harsh environments. These antennas are flexible which give autonomy for their applications.
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| 9. |
- Atallah, Jad. G., et al.
(författare)
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A direct conversion WiMAX RF receiver front-end in CMOS technology
- 2007
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Ingår i: ISSCS 2007. - NEW YORK : IEEE. - 9781424409686 ; , s. 37-40
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Konferensbidrag (refereegranskat)abstract
- This paper presents a direct conversion RF receiver front-end supporting the WiMAX standard. The front-end is implemented in 0.18um CMOS technology and designed using the ARCHER software. It shows how the design flow can be accelerated starting from the standard specifications and going down to schematics. All this is accompanied by test benches to extract the relevant metrics. This front-end provides a total gain of 31dB, a noise figure of 3.3dB, an IIP2 of 49.5dBm, and an IIP3 of -13.8dBm.
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| 10. |
- Baghaei Nejad, Majid, et al.
(författare)
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A novel passive tag with asymmetric wireless link for RFID and WSN applications
- 2007
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Ingår i: 2007 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS. - 9781424409204 ; , s. 1593-1596
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Konferensbidrag (refereegranskat)abstract
- In this paper, we present a radio-powered module with asymmetric wireless link utilizing ultra wideband radio system for RFID and wireless sensor applications. Our contribution includes using two different standards in uplink and downlink. Such as conventional RFIDs, incoming RF signal transmitted by reader is used to power the internal circuitry and receive the data. However, in upstream link, an IR-UWB transmitter is utilized. Unlike traditional RFID systems, due to great advantages of UWB communication, this tag is very robust to multi-path fading and collision problem and it is more secure against eavesdropping or jamming. The module consists of a power scavenging unit, a RF receiver, an IR-UWB transmitter, digital baseband controller, and an embedded UWB antenna are designed for integration on Liquid-Crystal Polymer (LCP) substrate, using 0.18um CMOS process technology.
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