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Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
Presents the introductory welcome message from the conference proceedings. May include the conference officers' congratulations to all involved with the conference event and publication of the proceedings record.
Charge pump based PLLs are widely used in modern ICs because of their superior performance. The capacitor in the loop filter is usually large which is implemented either as an off-chip discrete component, or on-chip consuming significant silicon area. Both implementations increase the cost. Moreover, the voltage ripples at the loop filter can result in large spurs at the VCO output. To address these...
A wide operating range and fast locking delay-locked loop (DLL) based frequency quadrupler that includes an eight-phase-clock generator and an edge combiner is proposed. The eight-phase-clock generator is composed of a coarse-code generator, a fine-code generator and a digital controlled delay line, which uses four differential delay units to generate equally spaced eight-phase clocks. The coarse-code...
Although Total Ionizing Dose (TID) effects are generally unpronounced in deep-submicron-CMOS, we show the TID-induced leakage current @TID=500Krad is significant in NMOS-finger-transistors of GlobalFoundries 65nm CMOS. Further, Radiation-Hardening-By-Design techniques against said TID effect are recommended.
A coresidual alias-locked loop (C-ALL) introduces a technique to reduce spurs in the voltage-controlled oscillator (VCO) output of an alias-locked loop (ALL). The output of an ALL subsampler provides a digital aliased frequency, that when in lock, is a recurring sequence of 1's and 0's at an average frequency of the reference clock. The lack of alignment of this bitstream to the reference clock can...
An all-digital on-chip sensor using programmable ring oscillator (PRO) for advanced on chip variation (AOCV) characterization is proposed and verified in 28nm HKMG node. Bypassing technique combined with statistical testing based on array of PROs enables resolution of 1 pico-second. Multiple cells under test (CUTs) are embedded into one single PRO through programmability to get mask area cost effectiveness...
The design of a true Bernoulli Random Number Generator (RNG) source with a true probability p = 0.5 is a challenging problem. In this work, we present a novel design of a True RNG (TRNG) that achieves a true E(p(n)) = 0.5. The architecture is based on the perturbation of a Sigma-Delta modulator using random telegraph noise (RTN).
Tandem repeats are periodic segments in the DNA. They play an important role in forensics, tracing population evolution, genetic disorders and so on. Locating them in long DNA sequences is the problem addressed in this paper. A new technique is presented, based on the recently proposed Ramanujan Filter Bank (RFB). The RFB was shown to offer several advantages over the traditional period estimation...
We propose a simple two-pass beamforming scheme that combines adaptive and nonadaptive methods to achieve high-quality ultrasound images at low computational cost. During the first pass, our beamformer processes buffered input vectors using an inexpensive nonadaptive method and computes the corresponding envelope. Based on that envelope information, selected outputs may be recomputed during the second...
Studies of time-varying or dynamic brain connectivity (BC) using functional magnetic resonance imaging (fMRI) are crucial to understand the relationship between different brain regions. This paper presents a novel method for estimating dynamic BC using a time-varying multivariate autoregressive (AR) model with spatial sparsity and temporal continuity constraints. The problem is formulated as a maximum...
Speckle noise reduction is a prerequisite task in images captured by ultrasonography systems due to their inherent noisy nature. In this work, we propose a new despeckling method in the contourlet domain using the Cauchy prior. The multiplicative speckle noise is first transferred to an additive one using a logarithmic transform. The logarithmically-transformed contourlet coefficients of the image...
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