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Motor current signature analysis (MCSA) based detection of rotor cage faults (RFs) in medium-high voltage induction motors has become common in the field due to its low-cost remote monitoring capability. However, low-frequency load oscillations (LOs) in applications that employ speed reduction couplings can induce frequency components in the vicinity of that of RFs. It has been reported that false-positive...
In this paper we present a coupling investigation between RF coil array elements which are backed by surface impedance characterized RF shields for 7 Tesla magnetic resonance imaging (MRI). Two simulation models for the RF coil elements are considered here: an ideal impressed current model for an initial 2-D investigation, and a symmetrically fed dipole with meander terminals for the 3-D investigation...
Coupling separately developed codes offers an attractive method for increasing the accuracy and fidelity of the computational models. Examples include the earth sciences and fusion integrated modeling. This paper describes the Framework Application for Core-Edge Transport Simulations (FACETS).
The new concept of RF Interconnect presented in this paper is aimed at replacing conventional interconnections in digital circuits. The study was, thus, focused on the transmission channel composed of contactless transitions. After a brief recall of the theory, an RF interconnection was modeled through use of multiplexing digital CDMA and amplitude modulation and characterized by using a co-simulation...
For the development and protection of electronic systems, which may be used in a high power electromagnetic (HPEM) environment, the behavior concerning the coupling of electromagnetic pulses is of special interest. Due to the use of different PCB materials, especially for RF applications, the influence of the used substrates on the coupling behavior of HPEM pulses for microstrip lines is investigated...
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