Andy C. Marvin

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The contents of an equipment enclosure, particularly printed circuit boards (PCBs), affect the enclosure’s shielding performance. At high frequencies this absorption can be quantified using the angle of arrival and polarization averaged absorption cross-section (ACS). However, there is no available data on the high-frequency absorption characteristics of(More)
Cellular mobile phones may interfere with hospital equipment. We irradiated five representative pieces of equipment using simulated phone signals and frequencies. Two (an oximeter and a syringe pump) were immune to electric fields of up to 40 V m-1. The most susceptible was a physiological monitor which showed effects at 10 V m-1. None of the equipment was(More)
Average absorption cross-section can be measured in a reverberation chamber with an uncertainty estimated from the number of independent samples of the chamber transfer function taken during the measurement. However the current uncertainty model does not account the loading effect of the object being measured or the presence of non-stochastic energy in the(More)
The electromagnetic absorption cross-section (ACS) averaged over polarization and angle-of-incidence of 60 ungrounded adult subjects was measured at microwave frequencies of 1-12 GHz in a reverberation chamber. Average ACS is important in non-ionizing dosimetry and exposure studies, and is closely related to the whole-body averaged specific absorption rate(More)
—This paper reports the results of two experimental campaigns aimed at studying the high-frequency response of a raceway containing low voltage power, telephone, and Ethernet cables, to external electromagnetic field illumination. The raceway was tested against HPEM transients inside a gigahertz transverse electromagnetic (GTEM) cell and low-power fields(More)
We have analysed the performance of multimode antennas arrays in double directional finite scatterers channel model with and without mutual coupling and compared the results with Omni directional antenna arrays. We have shown that multimode antennas are more suited as array elements as they perform better with regards to capacity and spatial correlation as(More)
Pantograph arcing is the main electromagnetic interference source in electric railways. A series of measurements of the radiated power of pantograph arcing has been taken in a reverberation chamber by using a laboratory replica designed to simulate the arcing pantograph. The radiated power properties are investigated in different resolution bandwidths, arc(More)