"Good-but-Imperfect" electromagnetic reverberation in a VIRC

Novel theoretical probability density functions (PDF) of electromagnetic fields inside reverberation chambers operating in a “good-but-imperfect‿ regime have been recently reported. The present work reports on the application and assessment of these PDFs using a non-conventional type of reverberation chamber, namely the Vibrating Intrinsic Reverberation Chamber (VIRC). A vector network analyzer was used in order to measure the complex field components. An electrically short dipole antenna was used as a receiving antenna. Five thousand frequency points were taken ranging from 200MHz (undermoded regime) to 4 GHz (overmoded regime), so one measurement every 760 kHz was performed. For each frequency, 200 samples of the real and imaginary part of the field were measured. Measurements confirm the fact that the novel PDFs are able to describe the occurrence of anomalous statistics in the VIRC

Noise Mitigation Analysis of a Pi-Filter for an Automotive Control Module

This paper has been reproduced on " InCompliance" magazine, May issue http://www.incompliancemag.com/ then "Issue Archive

Validation by Measurements of a IC Modeling Approach for SiP Applications

The growing importance of signal integrity (SI) analysis in integrated circuits (ICs), revealed by modern systemin-package methods, is demanding for new models for the IC sub-systems which are both accurate, efficient and extractable by simple measurement procedures. This paper presents the contribution for the establishment of an integrated IC modeling approach whose performance is assessed by direct comparison with the signals measured in laboratory of two distinct memory IC devices. Based on the identification of the main blocks of a typical IC device, the modeling approach consists of a network of system-level sub-models, some of which with already demonstrated accuracy, which simulated the IC interfacing behavior. Emphasis is given to the procedures that were developed to validate by means of laboratory measurements (and not by comparison with circuit-level simulations) the model performance, which is a novel and important aspect that should be considered in the design of IC models that are useful for SI analysi

Perceived Neighborhood Safety and Psychological Distress: Exploring Protective Factors

While a growing body of literature has established a relationship between disordered neighborhoods and psychological distress, less is known about the specific mechanisms at work. Using data collected in the 2008 Arizona Health Survey (N = 4,196), hierarchal linear regression was conducted to assess both the independent effect of perception of neighborhood safety on psychological distress, as well as the mediating effects of powerlessness, social isolation and mistrust. The findings suggest that the more safe individuals feel in their neighborhood, the less psychological distress they experience (b = 1.07, SE = .17, p \u3c .001). This relationship appears to be partially mediated by feelings of powerlessness, social isolation and mistrust, indicating potential risk and protective factors