Results 41 to 50 of about 15,732,617 (305)

Near-Optimum Iterative Multiuser Detection in Time-Frequency-Domain Spread Multicarrier DS-CDMA Systems [PDF]

, 2010
In this contribution we propose and study a novel iterative time-frequency-domain (TF-domain) multiuser detector (MUD) for the multicarrier direct-sequence code-division multiple-access system employing both T-domain and F-domain spreading, which, for ...
Yang, Lie-Liang, Zhang, Youguang, Lie-Liang Yang, Peng Pan, Youguang Zhang, Pan, Peng   +5 more
core   +2 more sources

Time domain reflectometry applied to MMIC passive component modeling [PDF]

, 1989
The time domain facilities of a network analyzer, combined with the tools of network synthesis, were recently used for experimental modeling of discontinuities in an S-parameter measurement set, so as to allow the instrument calibration directly to the ...
C. Beccari, A. Ferrero, Ferrero, Andrea Pierenrico, Beccari, C., Pisani, Umberto, U. Pisani   +5 more
core   +1 more source

A Temperature-Hardened Sensor Interface with a 12-Bit Digital Output Using a Novel Pulse Width Modulation Technique

Sensors, 2018
A fully integrated sensor interface for a wide operational temperature range is presented. It translates the sensor signal into a pulse width modulated (PWM) signal that is then converted into a 12-bit digital output.
Emna Chabchoub, Franck Badets, Frédérick Mailly, Pascal Nouet, Mohamed Masmoudi   +4 more
doaj   +1 more source

Some Applications of a Field Programmable Gate Array Based Time-Domain Spectrometer for NMR Relaxation and NMR Cryoporometry

Applied Sciences, 2020
NMR Relaxation (NMRR) is an extremely useful quantitative technique for material science, particularly for studying polymers and porous materials. NMR Cryoporometry (NMRC) is a powerful technique for the measurement of pore-size distributions and total ...
J. Beau W. Webber
doaj   +1 more source

Explicit Solution of the Time Domain Volume Integral Equation Using a Stable Predictor-Corrector Scheme [PDF]

, 2012
An explicit marching-on-in-time (MOT) scheme for solving the time domain volume integral equation is presented. The proposed method achieves its stability by employing, at each time step, a corrector scheme, which updates/corrects fields computed by the ...
Bağcı, H, Benson, Trevor, Sewell, P, Vukovic, A, Al Jarro, Ahmed, Bagci, Hakan, Al-Jarro, A, Benson, TM, Salem, MA, Salem, Mohamed, Sewell, Phillip D., Vuković, Ana   +11 more
core   +1 more source

A Linearization Time-Domain CMOS Smart Temperature Sensor Using a Curvature Compensation Oscillator

Sensors, 2013
This paper presents an area-efficient time-domain CMOS smart temperature sensor using a curvature compensation oscillator for linearity enhancement with a −40 to 120 °C temperature range operability.
Hao-Wen Chen, Chun-Chi Chen
doaj   +1 more source

Measurement of antennas and microwave components using time-domain reflectometry of a voltage impulse [PDF]

, 2011
Band-pass microwave systems such as ultra-wideband antennas are traditionally characterized in the frequency-domain through a vector network analyzer in an anechoic chamber.
Jonathan Scott, Scott, Jonathan B., Steven McCabe, McCabe, Steven Owen   +3 more
core   +1 more source

Time-Domain Circuit Modelling for Hybrid Supercapacitors

Energies, 2021
Classic circuit modeling for supercapacitors is limited in representing the strongly non-linear behavior of the hybrid supercapacitor technology. In this work, two novel modeling techniques suitable to represent the time-domain electrical behavior of a ...
Fabio Corti, Michelangelo-Santo Gulino, Maurizio Laschi, Gabriele Maria Lozito, Luca Pugi, Alberto Reatti, Dario Vangi   +6 more
doaj   +1 more source

Multiwavelength Evidence for Two New Candidate Transitional Millisecond Pulsars in the Subluminous Disk State: 4FGL J0639.1-8009 and 4FGL J1824.2+1231

The Astrophysical Journal
We report the discovery of two new Galactic accreting compact objects consistent with the respective positions of the unassociated Fermi-LAT γ -ray sources 4FGL J0639.1-8009 and 4FGL J1824.2+1231. A combination of new and archival X-ray data from Chandra,
Rebecca Kyer, Subhroja Roy, Jay Strader, Ryan Urquhart, Isabella Molina, Peter Craig, Laura Chomiuk   +6 more
doaj   +1 more source

Revisiting the Milky Way stellar long bar and the 3 kpc arm★

Astronomy & Astrophysics
Context. One of the most difficult and unexplored regions of the Milky Way is the highly extincted in-plane central region within the Galactic coordinates 10◦ ≲ |ℓ| ≲ 30◦, |b| ≲ 3◦, where we have the long-bar and 3 kpc arm with intermediate-age stellar ...
López-Corredoira M., Wu W., Wang H.-F., Garzón F.   +3 more
doaj   +1 more source