HP memristor mathematical model for periodic signals and DC 1 min read · Thu, Apr 29 2010 News HP memristor periodic signal mathematical model Circuits Ahmed Radwan, et al., " HP memristor mathematical model for periodic signals and DC". In 2010 53rd IEEE International Midwest Symposium on Circuits and Systems, 2010, 861. In this paper mathematical models of the HP Memristor for DC and periodic signal inputs are provided. The need for a rigid model for the Memristor using conventional current and voltage quantities is essential for the development of many promising Memristors' applications. Unlike the previous works, which focuses on the sinusoidal input waveform, we derived rules for any periodic signals in general in terms of voltage and
Evaluation framework for K-Best sphere decoders 1 min read · Thu, Apr 29 2010 News framework Circuits K-Best sphere decoders Chung-An Shen, et al., "Evaluation framework for K-best sphere decoders." Journal of Circuits, Systems, and Computers 19 (05), 2010, 975. While Maximum-Likelihood (ML) is the optimum decoding scheme for most communication scenarios, practical implementation difficulties limit its use, especially for Multiple Input Multiple Output (MIMO) systems with a large number of transmit or receive antennas. Tree-searching type decoder structures such as Sphere decoder and K-best decoder present an interesting trade-off between complexity and performance. Many algorithmic developments and VLSI
Gain-enhanced LTCC system-on-package for automotive UMRR applications 1 min read · Thu, Apr 29 2010 News Circuits ltcc Farhan Abdul Ghaffar, et al., "Gain-enhanced LTCC system-on-package for automotive UMRR applications." In 2010 53rd IEEE International Midwest Symposium on Circuits and Systems, 2010, 934. Abstract: A novel Low Temperature Co-fired Ceramic (LTCC) based SoP for automotive radar applications is presented. For the first time a combination of a relatively low dielectric constant LTCC substrate and a high dielectric constant LTCC superstrate has been incorporated to enhance the overall gain of the module. The superstrate can provide additional protection to the integrated circuits (IC) in the harsh
Sinusoidal oscillators with lower gain requirements at higher frequencies based on an explicit tanh(x) nonlinearity 1 min read · Thu, Apr 29 2010 News Circuits higher frequencies Ahmed S. Elwakil, et al., "Sinusoidal oscillators with lower gain requirements at higher frequencies based on an explicit tanh (x) nonlinearity." International Journal of Circuit Theory and Applications 38, (7), 2010, 747. Two novel sinusoidal oscillator structures with an explicit tanh(x) nonlinearity are proposed. The oscillators have the attractive feature: the higher the operating frequency, the lower the necessary gain required to start oscillations. A nonlinear model for the two oscillators is derived and verified numerically. Spice simulations using AMS BiCMOS 0.35µ model parameters and
An adaptive hybrid multiprocessor technique for bioinformatics sequence alignment 1 min read · Thu, Apr 29 2010 News bioinformatics sequence alignment Circuits hybrid multiprocessor technique Talal Bonny, et al., "An adaptive hybrid multiprocessor technique for bioinformatics sequence alignment." In 2010 5th cairo international biomedical engineering conference, 2010, 112. Sequence alignment algorithms such as the Smith-Waterman algorithm are among the most important applications in the development of bioinformatics. Sequence alignment algorithms must process large amounts of data which may take a long time. Here, we introduce our Adaptive Hybrid Multiprocessor technique to accelerate the implementation of the Smith-Waterman algorithm. Our technique utilizes both the graphics
Time domain oscillating poles: stability redefined in memristor based Wien-oscillators 1 min read · Thu, Apr 29 2010 News Circuits oscillating poles Time domain memristor Wien-oscillators Abdul Hafiz Talukdar, et al., "Time domain oscillating poles: stability redefined in memristor based Wien-oscillators." In 2010 International Conference on Microelectronics, 2010, 288. Traditionally, the necessary and sufficient condition for any system to be oscillating is that its poles are located on the imaginary (jω) axis. In this paper, for the first time, we have shown that systems can oscillate with time-domain oscillating poles. The idea is verified using a Memristor based Wien oscillator. Sustained oscillations are observed without having the poles of the system fixed on the
On the mathematical modeling of memristors 1 min read · Thu, Apr 29 2010 News Mathematical modeling Circuits memristors Radwan, Ahmed G., et al., "On the mathematical modeling of memristors." In 2010 International Conference on Microelectronics, 2010, 284. Since the fourth fundamental element (Memristor) became a reality by HP labs, and due to its huge potential, its mathematical models became a necessity. In this paper, we provide a simple mathematical model of Memristors characterized by linear dopant drift for sinusoidal input voltage, showing a high matching with the nonlinear SPICE simulations. The frequency response of the Memristor's resistance and its bounding conditions are derived. The fundamentals of
