Results 51 to 60 of about 1,160,559 (367)
Transformation of the frequency-modulated continuous-wave field into a train of short pulses by resonant filters [PDF]
Phys. Rev. A 95, 033805 (2017), 2016 The resonant filtering method transforming frequency modulated radiation field into a train of short pulses is proposed to apply in optical domain. Effective frequency modulation can be achieved by electro-optic modulator or by resonant frequency modulation of the filter with a narrow absorption line.
arxiv +1 more source
Method and apparatus for quadriphase-shift-key and linear phase modulation [PDF]
, 1980 A submultiple of an S-band transmitter output frequency was divided equally between a linear phase modulation branch and a QPSK modulation branch. The linear modulation branch includes a multiplier to increase the carrier frequency to a level which, when
Hermesmeyer, C. E.
core +1 more source
Insights into PI3K/AKT signaling in B cell development and chronic lymphocytic leukemia
FEBS Letters, EarlyView.This Review explores how the phosphoinositide 3‐kinase and protein kinase B pathway shapes B cell development and drives chronic lymphocytic leukemia, a common blood cancer. It examines how signaling levels affect disease progression, addresses treatment challenges, and introduces novel experimental strategies to improve therapies and patient outcomes.
Maike Buchner
wiley +1 more source
Remote SensingLinear frequency modulation (LFM) waveforms have been widely adopted due to their excellent performance characteristics, such as good Doppler tolerance and ease of physical implementation. However, LFM waveforms suffer from high autocorrelation sidelobes
Pengpeng Wang +3 more
doaj +1 more source
Space scanning FMCW-based two-dimensional frequency diverse array radar
The Journal of Engineering, 2019 The frequency-modulated continuous wave (FMCW)-based frequency diverse array (FDA) radar concept is extended to two dimensions (2D). The radar operates as a linear pulsed FMCW/FDA in the transmission (TX) mode while it operates as a pulsed FMCW/phased ...
Savaş Karadağ +2 more
doaj +1 more source
Fluids, 2021 A fluid-structure interaction’s effects on the dynamics of a hydrofoil immersed in a fluid flow of non-homogeneous density is presented and analyzed. A linearized model is applied to solve the fluid-structure coupled problem.
Tolotra Emerry Rajaomazava +3 more
doaj +1 more source
Frequency shift keying in vortex-based spin torque oscillators
, 2011 Vortex-based spin-torque oscillators can be made from extended spin valves connected to an electrical nanocontact. We study the implementation of frequency shift keying modulation in these oscillators.
Arfken G. B. +8 more
core +1 more source
Multiwavelength operation of erbium-doped fiber lasers by periodic filtering and phase modulation [PDF]
, 2009 This paper explains the principles behind multiwavelength operation of an erbium-doped fiber laser (EDFL) under the combined effect of cavity phase modulation and periodic wavelength filtering.
Mirza, M.A., Stewart, G.
core +1 more source
Making tau amyloid models in vitro: a crucial and underestimated challenge
FEBS Letters, EarlyView.This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley +1 more source
Design and characteristic analysis of hybrid OFD–LFM–PC waveforms in the MIMO radar
The Journal of Engineering, 2019 In this study, a new set of hybrid orthogonal frequency division–linear frequency modulation–phase coded (OFD–LFM–PC) waveforms are proposed to improve the detection performance of multiple-input-multiple-output (MIMO) radars.
Sheng Hong +4 more
doaj +1 more source