Results 21 to 30 of about 163,290 (264)

An Energy-Synchronous Direct Antenna Modulation Method for Phase Shift Keying

open access: yesIEEE Open Journal of Antennas and Propagation, 2020
A novel scheme for transmitting broadband phase shift keyed signals from electrically small antennas using energy-synchronous direct antenna modulation is described. We outline fundamental operating principles of the method and experimentally compare its
Kurt Schab   +2 more
doaj   +1 more source

An Adaptive Sliding Mode Control for a Dual Active Bridge Converter With Extended Phase Shift Modulation

open access: yesIEEE Access, 2023
This paper introduces an adaptive super-twisting sliding mode control (ASTSMC) approach for controlling a dual active bridge (DAB) converter with an extended phase shift (EPS) modulation.
Farzaneh Bagheri   +3 more
doaj   +1 more source

A Survey on Robust Modulation Requirements for the Next Generation Personal Satellite Communications

open access: yesFrontiers in Communications and Networks, 2022
The unrelenting technological advancement in the generation of wireless networks in recent years has awakened the motion concerning the inclusion of satellites in personal communications.
Julius Ssimbwa   +3 more
doaj   +1 more source

Robust phase-shift-keying Silicon photonic modulator

open access: yesOptics Express, 2012
Here we propose a robust silicon modulator that seamlessly generates phase shift keyed data. The modulator has very low insertion loss and is robust against electrical amplitude variations in the modulating signal; specifically a 50%-200% variation in modulating amplitude leads to only a π/9 variation in output optical phase, corresponding to only ± 10%
Donald, Adams   +2 more
openaire   +2 more sources

Technical Review of PWM Techniques for Dual Active Bridge for EV Charging

open access: yesAl-Iraqia Journal for Scientific Engineering Research
The need for bidirectional power flow between Electric Vehicle (EV) chargers and the grid via Vehicle-to-Grid (V2G) technology demands efficient power electronic converters.
P.B. Musiiwa   +3 more
doaj   +1 more source

KNN BASED CLASSIFICATION OF DIGITAL MODULATED SIGNALS

open access: yesInternational Islamic University Malaysia Engineering Journal, 2016
Demodulation process without the knowledge of modulation scheme requires Automatic Modulation Classification (AMC). When receiver has limited information about received signal then AMC become essential process. AMC finds important place in the field many
Sajjad Ahmed Ghauri
doaj   +1 more source

Solving Doppler-Angle Ambiguity of BPSK-MIMO FMCW Radar System

open access: yesIEEE Access, 2021
In a multiple-input multiple-output (MIMO) radar system, binary phase-shift keying (BPSK) modulation is widely used to separate signals transmitted from multiple transmit (Tx) antennas.
Jaehoon Jung   +3 more
doaj   +1 more source

Direct Antenna Modulation for High-Order Phase Shift Keying [PDF]

open access: yesIEEE Transactions on Antennas and Propagation, 2020
An antenna capable of directly phase modulating a radio frequency carrier is discussed, designed, and measured as both an antenna and a modulator. Access point densification for the Internet of Things will be expensive in part due to the cost and inefficiency of amplifying waveforms with large peak-to-average power ratios for downlink transmission ...
Henthorn, S., Ford, K., O'Farrell, T.
openaire   +3 more sources

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

Nonreciprocal phase shifts in spatiotemporally modulated systems

open access: yesPhysical Review B
Materials and devices subject to spatiotemporal modulation of their effective properties have a demonstrated ability to support nonreciprocal transmission of waves. Most notably, spatiotemporally modulated systems can restrict wave transmission to only one direction; i.e.
Jiuda Wu, Behrooz Yousefzadeh
openaire   +2 more sources

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