Title :
Dependence of reverberation chamber performance on distributed losses: A numerical study
Author :
Gradoni, Gabriele ; Primiani, V. Mariani ; Moglie, Franco
Author_Institution :
Sch. of Math. Sci., Univ. of Nottingham, Nottingham, UK
Abstract :
Finite-difference time-domain simulations of reverberation chambers exhibit a strong frequency dependence of field/power fluctuations on distributed losses. The performances of a reverberation chamber are calculated at different loss conditions and in a wide frequency band in terms of backscatter coefficient, and number of independent positions. Those performance indicators are related to field and power statistics through the scattering coefficients. A goodness-of-fit test is applied to analyze the statistical distribution functions of the numerical transmission scattering coefficient. Strong deviations from idealized distribution functions, some unexpected, are observed varying the chamber loading at both low- and high-frequencies. Observed phenomena are confirmed from the random coupling model, which reconciliates findings with the universal behavior of wave chaotic systems, as well as with previous studies of other investigators.
Keywords :
backscatter; electromagnetic wave scattering; finite difference time-domain analysis; losses; reverberation chambers; statistical distributions; backscatter coefficient; distributed losses; field-power fluctuations; finite-difference time-domain simulations; frequency dependence; goodness-of-fit test; idealized distribution functions; independent positions; loss conditions; numerical study; numerical transmission scattering coefficient; performance indicators; power statistics; random coupling model; reverberation chamber performance dependence; statistical distribution functions; strong deviations; wave chaotic systems; Antennas; Cavity resonators; Conductivity; Finite difference methods; Q-factor; Reverberation chambers; Time-domain analysis; FDTD; losses; random matrix theory; reverberation chambers; wave chaos;
Conference_Titel :
Electromagnetic Compatibility (EMC), 2014 IEEE International Symposium on
Conference_Location :
Raleigh, NC
Print_ISBN :
978-1-4799-5544-2
DOI :
10.1109/ISEMC.2014.6899073