Bill Schweber

1 week ago | electronicdesign.com | Bill Schweber

The need for improvements in terahertz-spectrum sources. How lasers and graphene layers are being used to create harmonics into the THz band. The multiple experiments that were run and the overview of results. It seems like almost every day we hear of another interesting, unusual, and often viable use for graphene, the single-atom-thickness layer of graphite. It was created in the early 2000s and led to a 2010 Nobel Prize in Physics for Andre Geim and Konstantin Novoselov.

1 week ago | powerelectronictips.com | Bill Schweber

Biomedical skin patches integrating multiple sensing, power, and reporting disciplines are receiving significant R&D effort. This final part concludes with an exposition of three more wearable biometric patches, a technology receiving considerable research attention for many obvious and not-so-obvious reasons. Employing a somewhat different approach, a group at the California Institute of Technology (Caltech) has developed a multimodal sensor that targets assessing an individual’s stress levels.

2 weeks ago | eetimes.com | Bill Schweber

//php echo do_shortcode('[responsivevoice_button voice="US English Male" buttontext="Listen to Post"]') ?> I have been following the many reports and papers on small-scale, low-power energy harvesting for a long time, and there are some that make some sense but many that do not (or only do so on the margins).

2 weeks ago | eeworldonline.com | Bill Schweber

The 50-ohm impedance is standard in RF design, while 75 ohms is also used, so it’s important to understand the attributes of each and not confuse them. One of the issues that beginning electronic engineers must grasp is the concept of impedance and impedance matching, especially concerning transmission lines, cables, and connectors. This FAQ will look at the two most commonly used “standard” impedances of 50 Ω and 75 Ω, why they are what they are, and the role of each.

2 weeks ago | powerelectronictips.com | Bill Schweber

Biomedical skin patches integrating multiple sensing, power, and reporting disciplines are receiving significant R&D effort. This part continues exposing the remaining 3 wearable biometric patches left out of part 1. Wearable patches are receiving considerable research attention for many obvious and not-so-obvious reasons.