Publication

Scattering from Time-Modulated Transmission-Line Loads: Theory and Experiments in Acoustics

Related publications (43)

Nonreciprocal Gain in Non-Hermitian Time-Floquet Systems

Romain Christophe Rémy Fleury, Theodoros Koutserimpas

We explore the unconventional wave scattering properties of non-Hermitian systems in which amplification or damping are induced by time-periodic modulation. These non-Hermitian time-Floquet systems are capable of nonreciprocal operations in the frequency d ...

2018

A photonic circuit for complementary frequency shifting, in-phase quadrature/single sideband modulation and frequency multiplication: analysis and integration feasibility

Jianqi Hu

A novel photonic integrated circuit architecture for implementing orthogonal frequency division multiplexing by means of photonic generation of phase-correlated sub-carriers is proposed. The circuit can also be used for implementing complex modulation, fre ...

Taylor & Francis Ltd2017

Gyrotron physics from linear to chaotic regimes: experiment and numerical modeling

Falk Hans Braunmüller

Gyrotrons belong to the family of high-power coherent radiation sources known as Electron Cyclotron Masers (ECMs) and are based on the physical mechanism of the ECM-instability, converting electron rotational kinetic energy into coherent electromagnetic ra ...

EPFL2016

Saturation of the response to stochastic forcing in two-dimensional backward-facing step flow: A self-consistent approximation

François Gallaire, Vladislav Mantic Lugo

Selective noise amplifiers are characterized by large linear amplification to external perturbations in a particular frequency range despite their global linear stability. Applying a stochastic forcing with increasing amplitude, the response undergoes a st ...

Amer Physical Soc2016

Field and frequency modulated sub-THz electron spin resonance spectrometer

Jean-Philippe Ansermet, Murari Soundararajan, Christian Caspers

260-GHz radiation is used for a quasi-optical electron spin resonance (ESR) spectrometer which features both field and frequency modulation. Free space propagation is used to implement Martin-Puplett interferometry with quasi-optical isolation, mirror beam ...

Amer Inst Physics2016

Analytic derivation of the (k/j)-order modulation envelopes in the sum of two mistuned (co)sine waves

Isaac Amidror

The beating effects which may occur in the sum of two mistuned cosine (or sine) functions whose frequencies f1, f2 satisfy f2 ≈ (k/j)f1 (where k/j is a reduced integer ratio) are known as “beats of mistuned consonances”. They have already been investigated ...

2015

Controlled stripes of ultrafine ferroelectric domains

Nava Setter, Alexander Tagantsev, Igor Stolichnov, Tomas Sluka, Silviu Cosmin Sandu, Petr Yudin, Ludwig Feigl, Xiankui Wei, Mahamudu Mtebwa, Konstantin Shapovalov

In the pursuit of ferroic-based (nano) electronics, it is essential to minutely control domain patterns and domain switching. The ability to control domain width, orientation and position is a prerequisite for circuitry based on fine domains. Here, we deve ...

Nature Publishing Group2014

Virtual Reality for Architectural Acoustics

Dirk Schröder

Over the last decades, powerful prediction models have been developed in architectural acoustics, which are used for the calculation of sound propagation in indoor and/or outdoor scenarios. Sound insulation is predicted rather precisely by using direct and ...

Taylor & Francis2014

Parity-Time Acoustic Metamaterials and Unidirectional Invisible Sensors

Romain Christophe Rémy Fleury

We theoretically and experimentally investigate the unique scattering properties of parity-time acoustic systems. We observe acoustic invisibility of airborne sound at audible frequencies in a parity-time symmetric meta-molecule made of perfectly balanced ...

2014

Effect of Digitally Modulated Signals on Multipactor Breakdown

Juan Ramon Mosig, Michael Mattes, Apostolos Sounas

This paper studies the effect of digitally modulated signals on the evolution of the multipaction phenomenon. Multipactor is numerically analyzed in a parallel plates waveguide for a variety of common digital modulation techniques. Breakdown power threshol ...

Ieee2013

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