Estimation of statistical characteristics for radiated electromagnetic emissions caused by PCB can be implemented by statistical signal processing of time domain signals measured by near-field scanning system. The relation between the source signal and the signals measured by the near-field probe at each scanning point can be modelled by an impulse response describing linear transformation of the source signal. In this paper modeling procedure for near-field to far-field propagator based on Jefimenko's equations is presented. Synchronized impulse responses can be used for computer aid prediction of the spatial-time evolution of the cyclostationary characteristics in the environment surrounding the PCB. Verification of the described measurement procedure was implemented by comparison of the calculated evolution of the electric field strength lines with the dipole radiation. The 2D periodic ACF of the far-field shows the cyclostationary properties similar to the properties of initial random bit sequence.     «

Estimation of statistical characteristics for radiated electromagnetic emissions caused by PCB can be implemented by statistical signal processing of time domain signals measured by near-field scanning system. The relation between the source signal and the signals measured by the near-field probe at each scanning point can be modelled by an impulse response describing linear transformation of the source signal. In this paper modeling procedure for near-field to far-field propagator based on Jefi...     »

stochastic processes, time-domain analysis, signal processing, electromagnetic wave propagation, Surface impedance, Probes, Time-domain analysis, transient response, printed circuits, source signal, Transmission line measurements, near-field measurements, PCB, electric fields, statistical analysis, impulse response, near-field probe, linear transformation, near-field scanning system, Two dimensional displays, statistical signal processing, Mathematical model, Magnetic field measurement, 2D periodic ACF, computer aid prediction, cyclostationary characteristics, dipole radiation, electric field strength lines, far-field propagator modelling, initial random bit sequence properties, Jefimenko equations, Jefimenko's equations, linear-time invariant system, measurement procedure, near-field propagator modelling, radiated electromagnetic emissions, scanning point, spatial-time evolution, statistical characteristic estimation, synchronized impulse responses, time domain signals     «

stochastic processes, time-domain analysis, signal processing, electromagnetic wave propagation, Surface impedance, Probes, Time-domain analysis, transient response, printed circuits, source signal, Transmission line measurements, near-field measurements, PCB, electric fields, statistical analysis, impulse response, near-field probe, linear transformation, near-field scanning system, Two dimensional displays, statistical signal processing, Mathematical model, Magnetic field measurement, 2D perio...     »