Conventional narrow-bandwidth low-noise amplifiers (LNA’s) can achieve noise figures close to the theoretical minimum noise figure of the high electron mobility transistor  (HEMT) devices that are being used (red curve). The wider the bandwidth, however, the more difficult it becomes to achieve a...

The North-West University has developed a universal, remote and digital interpretation system for PCR results that allows for point of care diagnosis. A difficulty in times of pandemic, for example, during the COVID-19 pandemic, is that there are large numbers of people requiring testing to identify...