Results 11 to 20 of about 90,040 (285)

A resonant short-circuit plunger as part of tunable waveguide-dielectric and waveguide-coaxial resonators built around cylindrical evanescent waveguides [PDF]

Радиофизика и электроника, 2021
Subject and Purpose. Tunable resonant structures make numerous microwave devices, among which are waveguide-dielectric and waveguide-coaxial resonators (WDR and WCR) built around cylindrical evanescent waveguides and involving a resonant short-circuit ...
I.G. Skuratovskiy, O.I. Khazov, A.S. Shakhova   +2 more
doaj   +1 more source

An ultra-thin absorber in microwave range: 50 GHz band-width, absorption over 80 %

Memories - Materials, Devices, Circuits and Systems, 2023
An ultra-thin microwave absorber with a 34 GHz bandwidth more than 90% absorption in the frequency range of 33.5 GHz - 67.5 GHz, and 50 GHz bandwidth, more than 80 % absorption is proposed. The functionality of the device was analyzed using an equivalent
Ilghar Rezaei, Behnaz Rashidi, Amir Ali Mohammad Khani, Toktam Aghaee   +3 more
doaj   +1 more source

Parametrical synthesis of dynamic links for variants of their inclusion between a nonlinear part and loading of automatic systems of radio management with the general feedback

Физика волновых процессов и радиотехнические системы, 2022
Introduction: the analysis of the known literature shows that the use of various types of matching quadripoles (reactive, resistive, complex, mixed) and the feedback circuit covering the non-linear element makes it possible to increase the area of ...
Alexander A. Golovkov, Vladimir A. Golovkov   +1 more
doaj   +1 more source

Photodetection of propagating quantum microwaves in circuit QED [PDF]

, 2009
We develop the theory of a metamaterial composed of an array of discrete quantum absorbers inside a one-dimensional waveguide that implements a high-efficiency microwave photon detector.
Bouchiat V, Bouwmeester D, Devoret M H Wallraff A Martinis J M, Englert B G U Mangano G Mariantoni M Gross R Siewert J Solano E, Enrique Solano, Gross R, Guillermo Romero, Helmer F, Juan José García-Ripoll, Kumar S DiVincenzo D P, Leonhardt U, Mariantoni M Storcz M J Wilhelm F K Oliver W D Emmert A Marx A Gross R Christ H Solano E   +11 more
core   +3 more sources

Parametrical synthesis of the complex two-port networks for variants of their inclusion between a source of a signal and a nonlinear part by criterion of maintenance of the set characteristics amplifiers with the general feedback

Физика волновых процессов и радиотехнические системы, 2022
Introduction: the analysis of known literature shows that the use of various types of matching quadripoles (reactive, resistive, complex, mixed) and a feedback circuit covering a non-linear element makes it possible to increase the area of physical ...
Alexander A. Golovkov, Vladimir A. Golovkov   +1 more
doaj   +1 more source

The Design Method of the Active Negative Group Delay Circuits Based on a Microwave Amplifier and an RL-Series Network

IEEE Access, 2018
This paper addresses a circuit theory regarding the negative group delay (NGD) principle. The methodology for characterizing this unfamiliar NGD function is described.
Fayu Wan, Ningdong Li, Blaise Ravelo, Qizheng Ji, Binhong Li, Junxiang Ge   +5 more
doaj   +1 more source

Polarization-independent symmetrical digital metasurface absorber

Results in Physics, 2021
A metasurface absorber developed using binary-coded unit cells and with the combination of coded unit cells resulted in excellent polarization insensitiveness, symmetrical characteristics, and tunable characteristics. As for binary patterns using the ‘0’
Ahmed Mahfuz Tamim, Md Mehedi Hasan, Mohammad Rashed Iqbal Faruque, Mohammad Tariqul Islam, Jamel Nebhen   +4 more
doaj   +1 more source

Physics-based large-signal sensitivity analysis of microwave circuits using technological parametric sensitivity from multidimensional semiconductor device models [PDF]

, 1997
The authors present an efficient approach to evaluate the large-signal (LS) parametric sensitivity of active semiconductor devices under quasi-periodic operation through accurate, multidimensional physics-based models.
Bonani, S., Donati Guerrieri, Simona, Filicori, F., Ghione, Giovanni, Pirola, Marco   +4 more
core   +2 more sources

S-Parameter Model of Three Parallel Interconnect Lines Generating Negative Group-Delay Effect

IEEE Access, 2018
This paper develops a negative group-delay (NGD) microwave circuit theory regarding topology consists of three parallel interconnect lines (3-PILs). The NGD topology under study is built using completely distributed microstrip lines. The 3-PIL NGD theory
Fayu Wan, Ningdong Li, Blaise Ravelo, Qizheng Ji, Junxiang Ge   +4 more
doaj   +1 more source

The Topological Structure of Microwave Circuit Theory [PDF]

, 2020
There is a rise of interest within the applied physics and engineering electromagnetics community in exploring the topological structure of various systems and devices. This paper provides an outline for a new approach to microwave circuit theory via Lie theory emphasizing the deep topological structure of transmission lines and is expected to shed ...
openaire   +1 more source