Results 51 to 60 of about 459,320 (213)

Phase noise degradation of LC-tank VCOs due to substrate noise and package coupling [PDF]

open access: yes, 2005
The present work addresses the investigation of phase noise degradation of LC-tank VCOs due to realistic digitally originated substrate noise. The dominant mechanisms by which this noise is coupled to the output of the oscillator due to the substrate
Aragonès Cervera, Xavier   +3 more
core   +1 more source

Optimisation of DSF and SOA based phase conjugators by incorporating noise-suppressing fibre gratings

open access: yes, 1997
We compare the performance of dispersion-shifted-fibre (DSF) and semiconductor-optical-amplifier (SOA) based phase conjugators for a 10 Gb/s non-return-to-zero system with respect to conversion efficiency, noise figure and distortion.
Laming, R.I.   +4 more
core   +1 more source

Trailing-edge noise reduction of a wing by a surface modification

open access: yes, 2021
There is an increased emphasis on reducing airframe noise in the last decades. Airframe noise is sound generated by the interaction of a turbulent flow with the aircraft geometry, and significantly contributes to the overall noise production during the ...
Kozulovic, Dragan   +2 more
core   +1 more source

Phase noise in RF and microwave amplifiers [PDF]

open access: yes2010 IEEE International Frequency Control Symposium, 2010
Understanding the amplifier phase noise is a critical issue in numerous fields of engineering and physics, like oscillators, frequency synthesis, telecommunications, radars, spectroscopy, in the emerging domain of microwave photonics, and in more exotic domains like radio astronomy, particle accelerators, etc.
Boudot, R., Rubiola, E.
openaire   +5 more sources

Whole system radar modelling: Simulation and validation

open access: yesIET Radar, Sonar & Navigation, 2023
The ever‐expanding horizon of radar applications demands solutions with high‐end radar functionalities and technologies and is often limited by the available radar equipment, cost and time.
Jithin Kannanthara   +9 more
doaj   +1 more source

Including orbital fluctuations in the noise spectrum of autonomous circuits [PDF]

open access: yes, 2011
We discuss the impact of orbital fluctuations on the noise spectrum of a free-running oscillator, exploiting a rigorous nonlinear perturbative analysis based on the Floquet theory, and providing evidence of its relevance for high-Q oscillators.
Bonani, Fabrizio   +3 more
core   +1 more source

Discrete-Time Models and Performance of Phase Noise Channels

open access: yesIEEE Open Journal of the Communications Society
This paper deals with the phase noise affecting communication systems, where local oscillators are employed to obtain reference signals for carrier and timing synchronizations. The most common discrete-time phase noise channel model is analyzed, with the
Amina Piemontese   +2 more
doaj   +1 more source

Reduction of phase noise to amplitude noise conversion in silicon waveguide-based phase-sensitive amplification

open access: yes, 2016
We use a vector phase sensitive amplification (PSA) scheme, which can eliminate the inherent phase noise (PN) to amplitude noise (AN) conversion in a conventional PSA process.
Ma, Yonghua   +4 more
core   +1 more source

High-power, low-phase-noise, frequency-agile laser system for delivering fiber-noise-cancelled pulses for Strontium clock atom interferometry

open access: yes, 2022
We present the development of a laser system for performing single-photon atom interferometry on the 698 nm clock transition in ultracold Strontium. We coherently combine the power of two Titanium:Sapphire lasers and demonstrate chirps of 200 MHz in 2.5 ...
Yiping Wang (1484218)   +3 more
core   +1 more source

A NEW PHASE NOISE DETECTION METHOD

open access: yesElectrica, 2015
Phase noise is one of the most important parameters in many oscillators. Detecting accurately phase noise for oscillators has importance significance. In this paper, based on correlation operation detection phase noise for oscillators was proposed.
Gangfeng YAN   +3 more
doaj   +2 more sources

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