Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Krzysztof Achtenberg"'
Publikováno v:
International Journal of Electronics and Telecommunications, Vol vol. 70, Iss No 1, Pp 175-182 (2024)
Infrared detectors are usually characterized by 1/f noise when operating with biasing. This type of noise significantly reduces detection capabilities for low-level and slow signals. There are a few methods to reduce the influence of 1/f noise, like
Externí odkaz:
https://doaj.org/article/6858de386184486ea09cbfdf1ae7559c
Autor:
Krzysztof Achtenberg, Graziella Scandurra, Janusz Mikołajczyk, Carmine Ciofi, Zbigniew Bielecki
Publikováno v:
Applied Sciences, Vol 13, Iss 17, p 9964 (2023)
This paper presents the design and testing of an ultra-low-noise transimpedance amplifier (TIA) for low-frequency noise measurements on low-impedance (below 1 kΩ) devices, such as advanced IR photodetectors. When dealing with low-impedance devices,
Externí odkaz:
https://doaj.org/article/1e3c769867a14125a2347a17d22afc1f
Publikováno v:
Biuletyn Wojskowej Akademii Technicznej, Vol 69, Iss 4, Pp 73-83 (2020)
The paper presents noise measurements of low-resistance photon detectors with a specially developed system. These measurements are significant for many applications. This issue is particularly critical for laser absorption spectroscopy systems to det
Externí odkaz:
https://doaj.org/article/ca3e19a1b84349dfb4e0945e3f302b63
Autor:
Krzysztof Szoszkiewicz, Szymon Jusik, Daniel Gebler, Krzysztof Achtenberg, Mariusz Adynkiewicz-Piragas, Artur Artur Radecki-Pawlik, Tomasz Okruszko, Karol Pietruczuk, Marcin Przesmycki, Przemysław Nawrocki
Publikováno v:
Journal of Ecological Engineering, Vol 21, Iss 8, Pp 261-271 (2020)
The method based on original metric called Hydromorphological Index for Rivers (HIR) was developed in 2017 for the purpose of the monitoring of the hydromorphological status of flowing waters in Poland. It fulfils requirements of the EU Water Framewo
Externí odkaz:
https://doaj.org/article/123fdac5e7464e96a77aca9521190dd5
Autor:
Zbigniew Bielecki, Krzysztof Achtenberg, Małgorzata Kopytko, Janusz Mikołajczyk, Jacek Wojtas, Antoni Rogalski
Publikováno v:
Bulletin of the Polish Academy of Sciences: Technical Sciences, Vol 70, Iss 2 (2022)
The review includes results of analyses and research aimed at standardizing the concepts and measurement procedures associated with photodetector parameters. Photodetectors are key components that ensure the conversion of incoming optical radiation i
Externí odkaz:
https://doaj.org/article/3155d76a866143c58ae12ddf4f76ad6a
Publikováno v:
Metrology and Measurement Systems, Vol 27, Iss 3, Pp 531-540 (2020)
The paper presents a low noise voltage FET amplifier for low frequency noise measurements. It was built using two stages of an op amp transimpedance amplifier. To reduce voltage noise, eight-paralleled low noise discrete JFETs were used in the first
Externí odkaz:
https://doaj.org/article/1c0d24d7246349a480ac49e5f6dbe720
Autor:
Janusz Mikolajczyk, Dariusz Szabra, Artur Prokopiuk, Krzysztof Achtenberg, Jacek Wojtas, Zbigniew Bielecki
Publikováno v:
International Journal of Electronics and Telecommunications, Vol vol. 66, Iss No 2, Pp 383-387 (2020)
This paper presents some construction analysis and test results of a Free Space Optics system operating at the wavelength of 9.35 μm. In the system, a quantum cascade laser and a photoreceiver with mercury cadmium telluride photodetectors were used.
Externí odkaz:
https://doaj.org/article/e0fc7a09af6640618e034aad6151409b
Publikováno v:
Metrology and Measurement Systems, Vol 27, Iss 2, Pp 203-218 (2020)
The paper is a review of analog and digital electronics dedicated to monitor nanosecond pulses. Choosing the optimal peak detector construction depends on many factors for example precision, complexity, or costs. The work shows some virtues and limit
Externí odkaz:
https://doaj.org/article/521d38c8421b4a1b969c6ad495d5ca8f
Publikováno v:
Water, Vol 15, Iss 2, p 295 (2023)
Climate change, worsening freshwater quality, and anthropogenic factors have caused water caltrop to lose approximately 80% of its habitat in Poland since the early 1980s. The presence of this plant species has substantially changed since the end of
Externí odkaz:
https://doaj.org/article/2cca2dd3a91b4c97a0d2e09fee2136ea
Publikováno v:
Sensors, Vol 22, Iss 22, p 8919 (2022)
This paper’s purpose was to demonstrate a performance of a novel approach in a low-noise optical sensor for an FTIR spectrometer. Methods: Compared to the standard FTIR detection setup, our sensor ensures a higher signal-to-noise ratio (SNR) and lo
Externí odkaz:
https://doaj.org/article/072f96c49ba048db910de72dba850ef2