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Papers by Bijay_Kumar Sharma
Emerging Materials Research, 2020
In 2005, Dennard Scaling which had hitherto delivered the performance enhancement of IC Chips com... more In 2005, Dennard Scaling which had hitherto delivered the performance enhancement of IC Chips completely collapsed. Hence the need for new material and material research emerged. Graphene 2D has em...
arXiv: General Physics, Nov 5, 2009
Using Advanced Kinematic Model (AKM), the unfolding of Earth’s eco-system under the influence of ... more Using Advanced Kinematic Model (AKM), the unfolding of Earth’s eco-system under the influence of the evolving tidally interacting Earth-Moon System (E-M system) is studied. E-M system is born 4.467...
Emerging Materials Research, 2020
Graphene is a (2 + 1)-dimensional quantum electrodynamic system. The carriers have a vanishing ma... more Graphene is a (2 + 1)-dimensional quantum electrodynamic system. The carriers have a vanishing mass and a relativistic velocity of 106 m/s, obeying charge-conjugate parity time symmetry. Graphene exhibits the Klein paradox, due to which, through spatial confinement, a bandgap can be opened in zigzag graphene nanoribbons for logic applications. The high Debye temperature of 2800 K ensures that phonons are frozen out and lattice scattering is suppressed at 300 K. The perfect crystallinity ensures that defect/impurity scattering is suppressed. The two together give very high electrical conductivity and electric mobility. This permits a current density of 108 A/cm2, about 100 times greater than that in copper. Single-layer graphene has a thermal conductivity of 3000–5000 (W/m)/K at 300 K, but graphite has K = 2000 (W/m)/K. This may open up few-layer graphene applications in thermal management of nanoelectronics. The half-integer quantum Hall effect and non-zero Berry phase have been ver...
Microelectronics Journal, 2018
Spie Proceedings Series, 2002
PSpice has definite limitations as accurate analog simulation software. This limitation arises be... more PSpice has definite limitations as accurate analog simulation software. This limitation arises because of the use of the conventional Hybrid-π model as small signal model of CE BJT. This paper establishes that the use of Universal Hybrid-π model in its place leads to an accurate simulation of Analog Circuits.
Advances in Space Research, 2019
IETE Journal of Research, 1989
Certain inconsistencies in the results worked out by Millman and Halkias in his book “Integrated ... more Certain inconsistencies in the results worked out by Millman and Halkias in his book “Integrated Electronics” impelled the first author to introduce the Universal Hybrid-pi model which incorporates the current generator β0 ib in place ofgm vπ at midfrequencies. The physical reasoning for doing so was the simple argument that why should not the total base nodal current ib be the useful transistor instead ofiπ. The Universal Hybrid-pi model was found to predict more realistic and practically verifiable performance parameters such as the reverse transmission parameter and the output impedance R0 of CB configuration. By examining the data sheets of CE h parameters also, the trend in support of Universal Hybrid-pi model seems to be found. Some more accurate and sensitive measurements are in order before the Universal Hybrid-pi model can conclusively be validated.
The analytical design of differential amplifiers, the building blocks of an op-amp, requires an e... more The analytical design of differential amplifiers, the building blocks of an op-amp, requires an elegant, handy and computationally simple experimental method of measuring the d.c.super-gain of these blocks. This paper presents such an Oscillation Based Test (OBT) by putting the Op.Amp. under test in the close loop of State Variable Filter. The oscillation frequency of the linearized system directly yields the d.c. open loop gain, the dominant pole and the second order non-dominant pole of test Op.Amp. The d.c. open loop gain of DUT is further authenticated by a novel method of Frequency Domain Analysis using a Super Attenuator. The authentication is positive with 95 percent confidence level ($\varepsilon$, 0 percent,9.64 percent) thereby establishing the validity of OBT method.
IETE Journal of Research, 1990
Early effect leads to the finite output impedance of CB BJT as well as CE BJT, the Universal Hybr... more Early effect leads to the finite output impedance of CB BJT as well as CE BJT, the Universal Hybrid-Pi model predicts that the output impedance of CE BJT is very sensitive to RS, the source resistance, and increases by more than an order of magnitude when the source drive is changed from constant current to constant voltage drive. This in effect means a much reduced overall early effect. Bat a reduced overall early effect means a such delayed sustaining voltage phenomena or a variable latching phenomena. The experimental study of the actual IC—VCC family of curves of different CE amplifier configurations does lead to the observation of wide variability of the latching voltage in CF. configuration. Observation of the variable latching phenomena on one band vindicates the Universal Hybrid-pi-model, though indirectly, and on the other creates the scope for exercising better economy in the design of linear power electronic system by a more effective exploitation of the variable latching property of CEBJT.
Paris, France, 2004
The Authors have done the Non-Keplerian analysis of Earth-Moon [1] and Keplerian analysis of Eart... more The Authors have done the Non-Keplerian analysis of Earth-Moon [1] and Keplerian analysis of Earth-Moon, Mars- Deimos-Phobos and Pluto-Charon [2]. In the present study lom/lod (length of month/length of day) equation for all the nine planets with respect to Sun has been set up and the present Planetary Semi-Major Axes of the nine Planets are substituted and omega /Omega was
34th COSPAR Scientific Assembly, 2002
Author in his last paper [1] did the complete mathematical formulation of Earth-Moon System since... more Author in his last paper [1] did the complete mathematical formulation of Earth-Moon System since 4.5 billion years before the present (BP) when Giant Impact took place to the present day and arrived at LENGTHENING OF DAY CURVE (lod curve). In this paper ...
AEU - International Journal of Electronics and Communications, 2014
Arxiv preprint arXiv:0807.5093, 2008
1. INTRODUCTION In recent days four observations strongly suggest that in remote past Jupiter and... more 1. INTRODUCTION In recent days four observations strongly suggest that in remote past Jupiter and the gas giants may have experienced gravitational sling shot and they may have been launched on an outward spiral path just the way Moon has been launched [personal ...
![Research paper thumbnail of Determination of Length of (Earth) Day [LOD] in the past geologic epochs](https://attachments.academia-assets.com/86332974/thumbnails/1.jpg)
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2016 IEEE 59th International Midwest Symposium on Circuits and Systems (MWSCAS), 2016
Sustained scaling for TerraHertz SiGe HBT has led to transit frequency = 315GHz at 300K but it ha... more Sustained scaling for TerraHertz SiGe HBT has led to transit frequency = 315GHz at 300K but it has simultaneously degraded BVceo to 1.63V. This has placed a high premium on UHF analog circuit design A theoretical formalism of the variable latching phenomena of CE BJT under various drive conditions, discovered by the Author in 1989, is one of the central problems in the design of high speed circuits. None of the industrial standards namely VBIC, HICUM and MEXTERM have been able to capture this feature. This paper takes a circuit plus device approach to develop a single analytic relation to model the variable latching phenomena of CE BJT current sources. This analytic relationship has been verified by experimental results using 2N3055 CE current sources with 90 percent confidence level. Proposed analytic relationship embedded in the compact model of HSPICE will enable exceptional model-to-hardware correlation in simulations of the variable latching phenomena and thereby lead to consid...
Emerging Materials Research, 2020
In 2005, Dennard Scaling which had hitherto delivered the performance enhancement of IC Chips com... more In 2005, Dennard Scaling which had hitherto delivered the performance enhancement of IC Chips completely collapsed. Hence the need for new material and material research emerged. Graphene 2D has em...
arXiv: General Physics, Nov 5, 2009
Using Advanced Kinematic Model (AKM), the unfolding of Earth’s eco-system under the influence of ... more Using Advanced Kinematic Model (AKM), the unfolding of Earth’s eco-system under the influence of the evolving tidally interacting Earth-Moon System (E-M system) is studied. E-M system is born 4.467...
Emerging Materials Research, 2020
Graphene is a (2 + 1)-dimensional quantum electrodynamic system. The carriers have a vanishing ma... more Graphene is a (2 + 1)-dimensional quantum electrodynamic system. The carriers have a vanishing mass and a relativistic velocity of 106 m/s, obeying charge-conjugate parity time symmetry. Graphene exhibits the Klein paradox, due to which, through spatial confinement, a bandgap can be opened in zigzag graphene nanoribbons for logic applications. The high Debye temperature of 2800 K ensures that phonons are frozen out and lattice scattering is suppressed at 300 K. The perfect crystallinity ensures that defect/impurity scattering is suppressed. The two together give very high electrical conductivity and electric mobility. This permits a current density of 108 A/cm2, about 100 times greater than that in copper. Single-layer graphene has a thermal conductivity of 3000–5000 (W/m)/K at 300 K, but graphite has K = 2000 (W/m)/K. This may open up few-layer graphene applications in thermal management of nanoelectronics. The half-integer quantum Hall effect and non-zero Berry phase have been ver...
Microelectronics Journal, 2018
Spie Proceedings Series, 2002
PSpice has definite limitations as accurate analog simulation software. This limitation arises be... more PSpice has definite limitations as accurate analog simulation software. This limitation arises because of the use of the conventional Hybrid-π model as small signal model of CE BJT. This paper establishes that the use of Universal Hybrid-π model in its place leads to an accurate simulation of Analog Circuits.
Advances in Space Research, 2019
IETE Journal of Research, 1989
Certain inconsistencies in the results worked out by Millman and Halkias in his book “Integrated ... more Certain inconsistencies in the results worked out by Millman and Halkias in his book “Integrated Electronics” impelled the first author to introduce the Universal Hybrid-pi model which incorporates the current generator β0 ib in place ofgm vπ at midfrequencies. The physical reasoning for doing so was the simple argument that why should not the total base nodal current ib be the useful transistor instead ofiπ. The Universal Hybrid-pi model was found to predict more realistic and practically verifiable performance parameters such as the reverse transmission parameter and the output impedance R0 of CB configuration. By examining the data sheets of CE h parameters also, the trend in support of Universal Hybrid-pi model seems to be found. Some more accurate and sensitive measurements are in order before the Universal Hybrid-pi model can conclusively be validated.
The analytical design of differential amplifiers, the building blocks of an op-amp, requires an e... more The analytical design of differential amplifiers, the building blocks of an op-amp, requires an elegant, handy and computationally simple experimental method of measuring the d.c.super-gain of these blocks. This paper presents such an Oscillation Based Test (OBT) by putting the Op.Amp. under test in the close loop of State Variable Filter. The oscillation frequency of the linearized system directly yields the d.c. open loop gain, the dominant pole and the second order non-dominant pole of test Op.Amp. The d.c. open loop gain of DUT is further authenticated by a novel method of Frequency Domain Analysis using a Super Attenuator. The authentication is positive with 95 percent confidence level ($\varepsilon$, 0 percent,9.64 percent) thereby establishing the validity of OBT method.
IETE Journal of Research, 1990
Early effect leads to the finite output impedance of CB BJT as well as CE BJT, the Universal Hybr... more Early effect leads to the finite output impedance of CB BJT as well as CE BJT, the Universal Hybrid-Pi model predicts that the output impedance of CE BJT is very sensitive to RS, the source resistance, and increases by more than an order of magnitude when the source drive is changed from constant current to constant voltage drive. This in effect means a much reduced overall early effect. Bat a reduced overall early effect means a such delayed sustaining voltage phenomena or a variable latching phenomena. The experimental study of the actual IC—VCC family of curves of different CE amplifier configurations does lead to the observation of wide variability of the latching voltage in CF. configuration. Observation of the variable latching phenomena on one band vindicates the Universal Hybrid-pi-model, though indirectly, and on the other creates the scope for exercising better economy in the design of linear power electronic system by a more effective exploitation of the variable latching property of CEBJT.
Paris, France, 2004
The Authors have done the Non-Keplerian analysis of Earth-Moon [1] and Keplerian analysis of Eart... more The Authors have done the Non-Keplerian analysis of Earth-Moon [1] and Keplerian analysis of Earth-Moon, Mars- Deimos-Phobos and Pluto-Charon [2]. In the present study lom/lod (length of month/length of day) equation for all the nine planets with respect to Sun has been set up and the present Planetary Semi-Major Axes of the nine Planets are substituted and omega /Omega was
34th COSPAR Scientific Assembly, 2002
Author in his last paper [1] did the complete mathematical formulation of Earth-Moon System since... more Author in his last paper [1] did the complete mathematical formulation of Earth-Moon System since 4.5 billion years before the present (BP) when Giant Impact took place to the present day and arrived at LENGTHENING OF DAY CURVE (lod curve). In this paper ...
AEU - International Journal of Electronics and Communications, 2014
Arxiv preprint arXiv:0807.5093, 2008
1. INTRODUCTION In recent days four observations strongly suggest that in remote past Jupiter and... more 1. INTRODUCTION In recent days four observations strongly suggest that in remote past Jupiter and the gas giants may have experienced gravitational sling shot and they may have been launched on an outward spiral path just the way Moon has been launched [personal ...
2016 IEEE 59th International Midwest Symposium on Circuits and Systems (MWSCAS), 2016
Sustained scaling for TerraHertz SiGe HBT has led to transit frequency = 315GHz at 300K but it ha... more Sustained scaling for TerraHertz SiGe HBT has led to transit frequency = 315GHz at 300K but it has simultaneously degraded BVceo to 1.63V. This has placed a high premium on UHF analog circuit design A theoretical formalism of the variable latching phenomena of CE BJT under various drive conditions, discovered by the Author in 1989, is one of the central problems in the design of high speed circuits. None of the industrial standards namely VBIC, HICUM and MEXTERM have been able to capture this feature. This paper takes a circuit plus device approach to develop a single analytic relation to model the variable latching phenomena of CE BJT current sources. This analytic relationship has been verified by experimental results using 2N3055 CE current sources with 90 percent confidence level. Proposed analytic relationship embedded in the compact model of HSPICE will enable exceptional model-to-hardware correlation in simulations of the variable latching phenomena and thereby lead to consid...