Frequency-independent performance of elliptic profile TEM horns

2009 ◽  
Vol 51 (3) ◽  
pp. 607-612 ◽  
Author(s):  
Jag Malherbe
Keyword(s):  
Frequency Independent ◽  
Elliptic Profile

Frequency-independent smart interference suppression for multi-standard transceivers

2012 ◽  
Author(s):  
Erwin J.G. Janssen ◽  
Dusan Milosevic ◽  
Peter G.M. Baltus ◽  
Arthur H.M. van Roermund ◽  
Hooman Habibi
Keyword(s):  
Interference Suppression ◽  
Frequency Independent

scholarly journals Recent Progress in the Development of Graphene Detector for Terahertz Detection

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 4987
Author(s):  
Jianlong Liu ◽  
Xin Li ◽  
Ruirui Jiang ◽  
Kaiqiang Yang ◽  
Jing Zhao ◽  
...  
Keyword(s):  
Recent Progress ◽  
Photovoltaic Effect ◽  
Dimensional Structure ◽  
High Electron ◽  
Terahertz Waves ◽  
Terahertz Detectors ◽  
Basic Part ◽  
Suitable Material ◽  
Terahertz Region ◽  
Frequency Independent

Terahertz waves are expected to be used in next-generation communications, detection, and other fields due to their unique characteristics. As a basic part of the terahertz application system, the terahertz detector plays a key role in terahertz technology. Due to the two-dimensional structure, graphene has unique characteristics features, such as exceptionally high electron mobility, zero band-gap, and frequency-independent spectral absorption, particularly in the terahertz region, making it a suitable material for terahertz detectors. In this review, the recent progress of graphene terahertz detectors related to photovoltaic effect (PV), photothermoelectric effect (PTE), bolometric effect, and plasma wave resonance are introduced and discussed.

scholarly journals Frequency-independent voltage amplitude across a tunnel junction

2021 ◽  
Vol 92 (4) ◽  
pp. 043710
Author(s):  
Simon Feigl ◽  
Radovan Vranik ◽  
Bareld Wit ◽  
Stefan Müllegger
Keyword(s):  
Tunnel Junction ◽  
Voltage Amplitude ◽  
Frequency Independent

scholarly journals Thermal Casimir effect with general boundary conditions

2020 ◽  
Vol 80 (8) ◽  
Author(s):  
J. M. Muñoz-Castañeda ◽  
L. Santamaría-Sanz ◽  
M. Donaire ◽  
M. Tello-Fraile
Keyword(s):  
Boundary Conditions ◽  
Vacuum Energy ◽  
Casimir Effect ◽  
Quantum Field ◽  
Quantum Vacuum ◽  
Parallel Plates ◽  
Casimir Forces ◽  
Thermal Correction ◽  
Frequency Independent ◽  
Scalar Quantum

Abstract In this paper we study the system of a scalar quantum field confined between two plane, isotropic, and homogeneous parallel plates at thermal equilibrium. We represent the plates by the most general lossless and frequency-independent boundary conditions that satisfy the conditions of isotropy and homogeneity and are compatible with the unitarity of the quantum field theory. Under these conditions we compute the thermal correction to the quantum vacuum energy as a function of the temperature and the parameters encoding the boundary condition. The latter enables us to obtain similar results for the pressure between plates and the quantum thermal correction to the entropy. We find out that our system is thermodynamically stable for any boundary conditions, and we identify a critical temperature below which certain boundary conditions yield attractive, repulsive, and null Casimir forces.

Reynolds-averaged Navier–Stokes simulation of hydrofoil effects on hydrodynamic coefficients of a catamaran in forced oscillation

2016 ◽  
Vol 231 (2) ◽  
pp. 364-383
Author(s):  
Amin Najafi ◽  
Mohammad Saeed Seif
Keyword(s):  
High Speed ◽  
Experimental Approach ◽  
Navier Stokes ◽  
Hydrodynamic Coefficients ◽  
Laboratory Equipment ◽  
Factors Affecting ◽  
High Frequencies ◽  
Frequency Independent ◽  
Reynolds Averaged Navier Stokes

Determination of high-speed crafts’ hydrodynamic coefficients will help to analyze the dynamics of these kinds of vessels and the factors affecting their dynamic stabilities. Also, it can be useful and effective in controlling the vessel instabilities. The main purpose of this study is to determine the coefficients of longitudinal motions of a planing catamaran with and without a hydrofoil using Reynolds-averaged Navier–Stokes method to evaluate the foil effects on them. Determination of hydrodynamic coefficients by experimental approach is costly and requires meticulous laboratory equipment; therefore, utilizing the numerical methods and developing a virtual laboratory seem highly efficient. In this study, the numerical results for hydrodynamic coefficients of a high-speed craft are verified against Troesch’s experimental results. In the following, after determination of hydrodynamic coefficients of a planing catamaran with and without foil, the foil effects on its hydrodynamic coefficients are evaluated. The results indicate that most of the coefficients are frequency-independent especially at high frequencies.

scholarly journals Frequency-Independent Synaptic Transmission Supports a Linear Vestibular Behavior

Neuron ◽  
2008 ◽  
Vol 60 (2) ◽  
pp. 343-352 ◽  
Author(s):  
Martha W. Bagnall ◽  
Lauren E. McElvain ◽  
Michael Faulstich ◽  
Sascha du Lac
Keyword(s):  
Synaptic Transmission ◽  
Frequency Independent

MACH-ZEHNDER INTERFEROMETER IN THE INTEGER QUANTUM HALL REGIME: A QUANTUM DISSIPATIVE MODEL

2009 ◽  
Vol 23 (12n13) ◽  
pp. 2927-2932
Author(s):  
E. A. ASANO
Keyword(s):  
Quantum Hall ◽  
Zehnder Interferometer ◽  
The Novel ◽  
Quantum Dissipation ◽  
Quantum Hall Regime ◽  
Hall Regime ◽  
Frequency Independent ◽  
Integer Quantum ◽  
Dissipative Model ◽  
Mach Zehnder Interferometer

We study properties of the simplest type of electron interferometer, the Mach-Zehnder Interferometer (MZI) in the Integer Quantum Hall (IQH) regime. In this work, in order to analyse the novel experimental results reported by I. Neder et al. [Phys. Rev. Lett.96, 016804 (2006)] which makes questionable the validity of Landauer-Buttiker formalism in the IQH regime, we have derived expressions for tunneling currents through the electronic MZI system whithin the model of quantum dissipation induced by an environment. In this model the MZI system is coupled to a dissipative environment, where the dissipation is introduced by coupling the MZI system to a frequency-independent Ohmic impedance Z(ω) = R.

On frequency independent damping

2004 ◽  
Vol 274 (3-5) ◽  
pp. 653-668 ◽  
Author(s):  
G.B. Muravskii
Keyword(s):  
Frequency Independent
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