Search results for "Digital modulation"

showing 2 items of 2 documents

Multipactor RF Breakdown in Coaxial Transmission Lines With Digitally Modulated Signals

2016

The aim of this paper is the study of the RF multipactor breakdown in coaxial transmission lines excited by a single carrier with a digitally modulated signal. Employing an in-house developed code, numerical simulations are performed to determine the RF multipactor voltage threshold for several digitally modulated signals under different modulations schemes: quadrature phase-shift keying, 16-quadrature amplitude modulation, 16-amplitude and phase-shift keying, and 32-amplitude and phase-shift keying. Moreover, a coarse method based on the envelope integration to determine the RF multipactor voltage threshold when involving arbitrary digital modulations is also presented. These results are a…

Multipactor effectEngineeringAcoustics02 engineering and technology01 natural sciences010305 fluids & plasmasHarmonic analysisAmplitude modulationDigital modulationTEORIA DE LA SEÑAL Y COMUNICACIONES0103 physical sciences0202 electrical engineering electronic engineering information engineeringElectronic engineeringElectrical and Electronic EngineeringQuadrature amplitude modulation (QAM)Coaxial waveguidesbusiness.industry20-gap-crossing ruleRoot-raised-cosine filterRF breakdown020206 networking & telecommunicationsKeyingElectronic Optical and Magnetic MaterialsElectric power transmissionAmplitude and phaseshift keying (APSK)Multipactor effectRadio frequencybusinessQuadrature phase-shift keying (QPSK)Phase-shift keyingVoltageIEEE Transactions on Electron Devices
researchProduct

Novel multipactor studies in RF satellite payloads: Single-carrier digital modulated signals and ferrite materials

2017

In this work it is reviewed the most novel advances in the multipactor RF breakdown risk assessment devoted to RF satellite microwave passive devices employed in space telecommunication systems. On one side, it is studied the effect of transmitting a single-carrier digital modulated signal in the multipactor RF voltage threshold in a coaxial line. On the other hand, an analysis of the multipactor phenomenon in a parallel-plate waveguide containing a magnetized ferrite slab it is presented.

010302 applied physicsEngineeringComputer simulationbusiness.industryElectrical engineering01 natural sciencesElectronic mailThreshold voltage0103 physical sciencesDigital modulationOptoelectronicsCoaxial lineFerrite (magnet)Ferrite materialsRadio frequencybusinessMicrowaveVoltageMultipactor
researchProduct