Results 11 to 20 of about 26,548 (279)

Planar Phase-Variation Microwave Sensors for Material Characterization: A Review and Comparison of Various Approaches

open access: yesSensors, 2021
Planar phase-variation microwave sensors have attracted increasing interest in recent years since they combine the advantages of planar technology (including low cost, low profile, and sensor integration with the associated circuitry for post-processing ...
Jonathan Muñoz-Enano   +6 more
doaj   +1 more source

Electrochemical Impedance Spectroscopy Part 1: Fundamentals

open access: yesElectrochemistry, 2022
Electrochemical impedance spectroscopy (EIS) enables the examination of the electrochemical nature of electrodes and electrochemical cells by applying an alternating voltage (or current) and measuring the resulting current (or voltage).
Kingo ARIYOSHI   +6 more
doaj   +1 more source

Kalman Filter Estimation of Impedance Parameters for Medium Transmission Line [PDF]

open access: yes, 2018
Accurate knowledge of impedance parameters in transmission line helps to improve the system efficiency and performance. Nowadays, the estimation of impedance parameters in transmission line has become possible with the availability of computational ...
Ahmad, Hamzah; Universiti Malaysia Pahang   +4 more
core   +3 more sources

A Methodology to Design Broadband Negative Inductors with Tight Tolerance for Microwave Applications

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2023
Introduction. Non-Foster elements (NFEs) mimic behavior of hypothetical negative inductors or capacitors in a certain frequency band. NFEs are used to compensate reactance of conventional inductors and capacitors that allows designing broadband microwave
B. S. Buiantuev   +3 more
doaj   +1 more source

Miniaturized and enhanced bandwidth Marchand balun using CSRR

open access: yesIET Microwaves, Antennas & Propagation, 2021
A novel and miniaturized Marchand balun is proposed using two quarter‐wave edge coupled transmission line and two complementary split‐ring resonators (CSRR) unit cell in the ground plane.
Partha Kumar Deb   +2 more
doaj   +1 more source

The Impedance of a Transmission Line Transformer

open access: yes, 2022
 Transmission-line transformers are useful circuits for impedance-matching applications due to their broad operating bandwidth. An equivalent model for transmission-line transformers supports accurate calculation of input impedance through a distributed ...
Enzo Carpentieri (14195432)
core   +1 more source

Adaptive algorithm in distance relay with out of step blocking element compatible with smart grid requirements during sub‐synchronous resonance in transmission line

open access: yesIET Generation, Transmission & Distribution, 2021
Smart grid comprises utility system and dispersed renewable generations. It establishes bidirectional power transmission and communication among utility system, distributed generations and consumers.
Salman Rezaei
doaj   +1 more source

Circuit Analysis of a Coplanar Waveguide (CPW) Terminated With a Step-Impedance Resonator (SIR) for Highly Sensitive One-Port Permittivity Sensing

open access: yesIEEE Access, 2022
This paper presents a single-frequency reflective-mode phase-variation microwave sensor devoted to the dielectric characterization of materials. The device is implemented in coplanar waveguide (CPW) technology and consists of two parts: (i) the sensing ...
Pau Casacuberta   +6 more
doaj   +1 more source

Wideband Matching Circuit for mmWave Series Fed Patch Array Antenna

open access: yesIEEE Access, 2023
A novel wide band matching circuit for the series fed patch array antenna at 80 GHz is proposed in this paper. The series fed patch array is designed with amplitude tapered configuration.
Manoj Prabhakar Mohan   +5 more
doaj   +1 more source

Determination of the interaction impedance of helix slow-wave structures. [PDF]

open access: yes, 2000
The computer simulation of helix travelling-wave tubes requires accurate information about the phase velocity, interaction impedance and attenuation of the helix slow wave structure at each frequency.
R.G. Carter, Carter, R. G.
core   +1 more source

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