A 5.5 μW 42 nV/√Hz Chopper stabilized Amplifier for Biomedical Application with Input Impedance Enhancement [PDF]
International Journal of Electronics and Telecommunications, 2021 The continuous real-time monitoring of diverse physical parameters using biosignals like ECG and EEG requires the biomedical sensors. Such sensor consists of analog frontend unit for which low noise and low power Operational transconductance amplifier ...
Ankit Adesara, Amisha Naik
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Mathematical models of spheroidal spiral-frame radiating structures
Физика волновых процессов и радиотехнические системы, 2023 The article considers mathematical models of two spheroidal spiral-frame emitters, built on the basis of a general approach involving the use of an integral representation electromagnetic field.
Dmitry P. Tabakov, Ruslan M. Valiullin
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Input impedance of a microstrip antenna with a chiral substrate based on left-handed spirals
The Journal of Engineering, 2019 This study proposes a mathematical model and a technique for the electrodynamic analysis of a microstrip antenna with a chiral substrate based on the left-handed spirals.
Vladimir Y. Abramov +4 more
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Preparation of coated copper powder and its electromagnetic absorption property
Xi'an Gongcheng Daxue xuebao, 2023 In order to improve the application of copper powder in the field of microwave absorption, nickel coated copper powder and silver coated nickel coated copper composite powder were prepared by electroless plating method using copper powder as raw material.
LIU Yi +3 more
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Peak-picking identification technique for modal expansion of input impedance of brass instruments
Acta Acustica, 2021 The paper presents a method to obtain the modal expansion of the measured input impedance of a brass instrument. The method operates as a peak-picking procedure, which makes it particularly intuitive for users who are not experts in modal analysis.
Ablitzer Frédéric
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A Compact MIMO Antenna Design Using the Wideband Ground-Radiation Technique for 5G Terminals [PDF]
Journal of Electromagnetic Engineering and ScienceThis paper introduces a 4 × 4 multiple-input and multiple-output (MIMO) antenna application based on the conception of the characteristic mode of 5G terminals.
Rui Li, Longyue Qu, Hyeongdong Kim
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Resonant properties of an impedance monopole located on a perfectly conducting rectangular screen [PDF]
Радиофизика и электроника, 2020 Subject and Purpose. A resonant monopole of an electrical length 0.2 £ l / l £ 0.3 mounted on an infinite, perfectly conducting plane or on a rectangular, perfectly conducting screen is considered.
N.P. Yeliseyeva +2 more
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Frontiers in Energy Research, 2022 The impedance-based criterion has turned out to be a very effective tool for the stability analysis of the dual active bridge (DAB) converter with its input LC filter.
Fan Feng +4 more
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A new method for input installation impedance measurement [PDF]
2018 IEEE International Symposium on Power Line Communications and its Applications (ISPLC), 2018 The access impedance for Narrowband PLC communication is dependent of the global installation impedance. The interest of this paper is to measure the domestic installation impedance using a new setup based on an LCL filter for masking the network impedance. The short-time and the frequency variation of the global impedance in the frequency band between
Elfeki, Imène +4 more
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Analysis of Input Impedance of the Traction Vehicle with DC Chopper as a Function of Operation Mode
Communications, 2007 A problem of analysis of the input impedance of a converter traction vehicle is presented in the paper. The value of input impedance of a traction vehicle has significant influence of compatibility between track circuits and traction vehicles.
Adam Szeląg, Marcin Steczek
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