Abstract: Sparse arrays designed based on fourth-order difference co-array (DCA) can achieve significantly higher uniform degrees-of-freedom (uDOFs). However, most existing fourth-order sparse arrays ...

Abstract: This article proposes a full-metal omnidirectional series-fed filtenna array. The antenna is primarily composed of an outer metal shell, a built-in metal post and three pairs of open-circuit ...

The Army is launching a sweeping new nuclear program to generate power for bases across the globe, particularly in remote or contested locations where fuel might be difficult to obtain, Fox News ...

A judge in Illinois has temporarily blocked federal agents from using certain types of force and crowd-control measures against protesters, after video of a pastor being repeatedly shot by pepper ...

The beginning of Bill Belichick’s time as coach of North Carolina football has not gone smoothly. The Tar Heels, fresh off of a 38-10 shellacking at the hands of Clemson, are 2-3 — and 0-1 in Atlantic ...