Results 21 to 30 of about 2,833,449 (298)

Transmission Phase Control of Annular Array Transducers for Efficient Second Harmonic Generation in the Presence of a Stress-Free Boundary

open access: yesApplied Sciences, 2021
The through-transmission (TT) method is mainly used to measure the amplitude of the second harmonic from which the acoustic nonlinear parameter is determined for early damage detection of materials.
Hyunjo Jeong, Hyojeong Shin
doaj   +1 more source

Polarization-induced phase shift of ultrafast photocurrents

open access: yesEPJ Web of Conferences, 2013
Shift and injection currents are known to occur for linearly and circularly polarized optical excitations of semiconductors, respectively. Here, we show with room-temperature experiments that for excitation of discrete transitions the frequency dynamics ...
Pierz K., Priyadarshi S., Bieler M.
doaj   +1 more source

Study of millimeter wave phase shift in 40 GHz hybrid mode locked lasers [PDF]

open access: yes, 2009
An investigation into using hybrid mode-locked lasers to implement millimeter wave phase shift is presented. The phase shift is measured directly using a vector network analyzer enabling straightforward characterization of such systems.
Cryan, MJ, Khawaja, BAM
core   +2 more sources

Instantaneous phase shifting deflectometry

open access: yesOptics Express, 2016
An instantaneous phase shifting deflectometry measurement method is presented and implemented by measuring a time varying deformable mirror with an iPhone ® 6. The instantaneous method is based on multiplexing phase shifted fringe patterns with color, and decomposing them in x and y using Fourier techniques.
Isaac, Trumper   +2 more
openaire   +2 more sources

NMR C-NOT gate through Aharanov-Anandan's phase shift [PDF]

open access: yes, 2001
Recently, it is proposed to do quantum computation through the Berry's phase(adiabatic cyclic geometric phase) shift with NMR (Jones et al, Nature, 403, 869(2000)).
Alexandre B   +8 more
core   +2 more sources

Design of K-Band Power Amplifier with 180-Degree Phase- Shift Function Using Low-Power CMOS Process

open access: yesApplied Sciences, 2023
In this study, a K-band complementary metal oxide semiconductor (CMOS) power amplifier was designed using a low-power (LP) process to improve the integration of the beamforming system.
Seongjin Jang   +3 more
doaj   +1 more source

The Coulomb phase shift revisited

open access: yes, 2010
We investigate the Coulomb phase shift, and derive and analyze new and more precise analytical formulae. We consider next to leading order terms to the Stirling approximation, and show that they are important at small values of the angular momentum $l ...
ACC Villari   +20 more
core   +1 more source

Depolarization shift of the superradiant phase transition [PDF]

open access: yes, 2016
We investigate the possibility of a Dicke-type superradiant phase transition of an atomic gas with an extended model which takes into account the short-range depolarizing interactions between atoms approaching each other as close as the atomic size scale,
Domokos, Peter   +2 more
core   +2 more sources

PHASE ANGLE SHIFT AND SLOPE BASED RESTRAINT FOR INDIRECT SYMMETRICAL PHASE SHIFT TRANSFORMER PROTECTION

open access: yesJournal of Engineering and Sustainable Development
This study presents a method to limit the functioning of the differential relay during the different operating conditions of an Indirect Symmetrical Phase Shift Transformer (ISPST).
Shailendra Kumar Bhasker, Manoj Tripathy
doaj   +1 more source

Coupling Matrix Extraction of Microwave Filters by Using One-Dimensional Convolutional Autoencoders

open access: yesFrontiers in Physics, 2021
The tuning of microwave filter is important and complex. Extracting coupling matrix from given S-parameters is a core task for filter tuning. In this article, one-dimensional convolutional autoencoders (1D-CAEs) are proposed to extract coupling matrix ...
Yongliang Zhang   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy