Anup K. Bhattacharjee

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Slew rate determines the ability of a device to handle the varying signals. Determination of the slew rate to a good proximity is thus essential for efficient design of high speed CMOS integrated circuits. This in turn estimates the output switching surges in the device. Interconnect slew has become a crucial bottleneck for any high density and high speed(More)
In this paper, the method of imposing of nulls in the radiation pattern of an antenna array is hashed out using Real coded Genetic Algorithm (RGA). Circular array antennas lying on x-y plane is assumed. The array is assumed to have the maximum radiation along positive z-axis. Single and multiple nulls are imposed by optimizing the current amplitude(More)
A novel approach based on the real coded genetic algorithm (RGA) is proposed to improve nulling performance of time modulated linear antenna arrays. The RGA adjusts the excitation amplitude of each radiating element to place deep nulls in the desired direction. Various results are presented to show the advantages of this approach considering one and(More)
In this article, an effort has been made to investigate the nonlinear and chaotic nature of daily CME linear speed time series data collected from the Solar and Heliospheric Observatory for solar cycle 23 over the period of February 1999 to December 2007. To explore the nonlinear characteristic of the CME linear speed signal delay vector variance algorithm(More)
In this paper the synthesis of linear array geometry with minimum sidelobe level using a new class of Particle Swarm Optimization technique namely Novel Particle Swarm Optimization (NPSO) is described. The NPSO algorithm is a newly proposed, high-performance evolutionary algorithm capable of solving general N-dimensional, linear and nonlinear optimization(More)
Several approaches have been proposed for the accurate and efficient estimation of the on-chip interconnect delay and slew metrics. Moments of the impulse response are widely used for interconnect timing analysis, from the explicit Elmore delay (the first moment of the impulse response) expression, to moment matching methods which creates reduced order(More)
In this paper, optimal designs of three-ring concentric circular antenna arrays (CCAA) without and with central element feeding are reported. For each optimal design, optimal current excitation weights and optimal radii are determined having the objective of maximum Sidelobe Level (SLL) reduction. The optimization technique adopted is Particle swarm(More)
In this paper, we begin with the analysis of signal delay through an ideal RLC transmission line, without the driver and the load impedance. This yield's to the transform voltage and current equations governing the system response by incorporating appropriate boundary conditions for interconnect delay analysis. Two port parameters, in terms of ABCD matrix,(More)
In large organizations people need to collaborate for meeting organizational goals in number of ways. Collaboration platforms such as Google Docs offer a set of software components and services which enable users to communicate and share documented information. However, sensitive information, which pertains to almost all industries/organizations today,(More)