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In this paper we revisit existing methods for measuring the shielding effectiveness of material samples using nested reverberation chambers. These methods have the advantage of exposing the sample with a more realistic environment than other methods that are based on single plane wave excitation. That is, in the reverberation chamber the sample is exposed to fields with different incidence directions...
This paper presents transient effects in a reverberation chamber excited by short pulses. The field distribution of the chamber is modeled with a new simulation method using the superposition of plane waves in time domain. The behaviour of the simulated power in the chamber when excited with impulses of different length is given, discussed and compared to measurements. Furthermore, the probability...
Measurements of the Electro Magnetic Fields (EMF) emitted by 3 UMTS base stations have been correlated with network counters related to traffic variation and radiated power, in order to obtain a more realistic yet conservative calculation of the EMF emitted from a UMTS base station.
Parasitic inductance that exists in a package induces SSN (Simultaneous Switching Noise) and timing jitter. These noises cause malfunction of LSI and systems. The goal of this paper is to clarify the influence of the effective inductance of the package including mutual inductance by changing the number of simultaneously switching buffers and alternating adjacent buffers in the reverse direction each...
Power networks and installed equipment onboard of naval ships are required to meet military standards. However, technology in the commercial market grows very fast and the use of Commercial Off The Shelf (COTS) products is economically interesting although they are often not certified against required military standards. To justify the use of COTS regarding power quality, the interaction between the...
In the consumer electronics field, the clock frequency of the system LSI (large-scale integration) is increasing significantly. To maintain operational stability, the impedance of the power distribution network, especially in the high frequency range, has to be reduced. This results in increased number of power supply or ground pins for an LSI package. The increased pin count will require a larger...
In this paper, a new measurement system for scanning the complex near field on a printed circuit board (PCB) is proposed. The measurement is based on the 6-port technique. The measurement results of the proposed measurement system and the measured results directly by using a VNA agree well, which confirmed the validity of the proposed measurement system.
A new technique for shielding effectiveness measurements is the dual VIRC method. In this method two Vibrating Intrinsic Reverberation Chambers (VIRC) are combined together via a common wall with an aperture that forms the interface between them. This particular set-up makes it possible to achieve a very high dynamic range. Advantage of this technique compared to the nested reverberation set-up is...
This paper presents the results of a measurement campaign relevant to the 50Hz magnetic field produced by the Italian High Speed Railway system. Such results are then compared with the ones obtained by means of a simulation model.
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