Rok 2023

• Active Control of Highly Autocorrelated Machinery Noise in Multivariate Nonminimum Phase Systems

  Publikacja

  • M. Meller
  • A. Lasota

  - CIRCUITS SYSTEMS AND SIGNAL PROCESSING - Rok 2023

  In this paper, a novel multivariate active noise control scheme, designed to attenuate disturbances with high autocorrelation characteristics and preserve background signals, is proposed. The algorithm belongs to the class of feedback controllers and, unlike the popular feedforward FX-LMS approach, does not require availability of a reference signal. The proposed approach draws its inspiration from the iterative learning control...

  Pełny tekst do pobrania w portalu

Rok 2022

• A Control Theoretical Approach to Spectral Factorization is Unstable

  Publikacja

  • M. Meller
  • A. Lasota

  - CIRCUITS SYSTEMS AND SIGNAL PROCESSING - Rok 2022

  Local stability analysis of a recently proposed recursive feedback-based approach to spectral factorization is performed. The method is found not to give stability guarantees. Interestingly enough, its global behavior often allows one to obtain reasonable approximations of spectral factorizations if a suitable stopping criterion is employed.

  Pełny tekst do pobrania w portalu

Rok 2020

• Light-Powered Starter for Micro-Power Boost DC–DC Converter for CMOS Image Sensors

  Publikacja

  • G. Blakiewicz
  • J. Jakusz
  • M. Kłosowski
  • W. Jendernalik
  • S. Szczepański

  - CIRCUITS SYSTEMS AND SIGNAL PROCESSING - Rok 2020

  The design of a starter for a low-voltage, micro-power boost DC–DC converter intended for powering CMOS image sensors is presented. A unique feature of the starter is extremely low current, below 1 nA, supplying its control circuit. Therefore, a high-voltage (1.3 V) configuration of series-connected photovoltaic diodes available in a standard CMOS process or a small external LED working in photovoltaic mode can be used as an auxiliary...

  Pełny tekst do pobrania w portalu

Rok 2017

• An Ultra-Low-Energy Analog Comparator for A/D Converters in CMOS Image Sensors

  Publikacja

  • W. Jendernalik

  - CIRCUITS SYSTEMS AND SIGNAL PROCESSING - Rok 2017

  This paper proposes a new solution of an ultra-low-energy analog comparator, dedicated to slope analog-to-digital converters (ADC), particularly suited for CMOS image sensors (CISs) featuring a large number of ADCs. For massively parallel imaging arrays, this number may be as high as tens-hundreds of thousands ADCs. As each ADC includes an analog comparator, the number of these comparators in CIS is always high. Detailed analysis...

  Pełny tekst do pobrania w portalu

Rok 2016

• Toward Wide-Band High-Resolution Analog-to-Digital Converters Using Hybrid Filter Bank Architecture

  Publikacja

  • B. Szlachetko

  - CIRCUITS SYSTEMS AND SIGNAL PROCESSING - Rok 2016

  Pełny tekst do pobrania w serwisie zewnętrznym

Rok 2014

• Variable Fractional Delay Filter Design Using a Symmetric Window

  Publikacja

  • M. Blok
  • M. Sac

  - CIRCUITS SYSTEMS AND SIGNAL PROCESSING - Rok 2014

  In this paper a numerically efficient method for designing a nearly optimal variable fractional delay (VFD) filter based on a simple and well-known window method is presented. In the proposed method a single window extracted from the optimal filter with fixed fractional delay (FD) is divided into even and odd part. Subsequently, the odd part is discarded and symmetric even part of the extracted window is used to design a family...

  Pełny tekst do pobrania w portalu