Abstract: Empirical formulas are proposed for the superdirectivities of broadside linear and square arrays. The formulas are derived based on a large amount of numerical results of optimum directivity ...

Abstract: Various canonical piecewise linear (CPWL) function-based models have been widely used for modeling radio frequency (RF) power amplifiers (PAs). In most literatures, the thresholds of CPWL ...

In Hell Is Us, as you continue searching for the Keystone of Ecstasy, you'll travel to the Lethe National Library. Here, you'll come up against a locked door that requires a code — but what is it? In ...

Learning to play a musical instrument can protect your brain from aging, building up a defense against cognitive decline that lasts a lifetime. Researchers from Canada and China discovered older ...