Abstract: This study presents designing and simulating a 2×2 circular polarization (CP) reconfigurable octagonal-shaped microstrip array antenna, constructed on a Teflon substrate, for the Ku-band ...

Abstract: This article presents a novel variable stiffness actuator (VSA) capable of wide-range stiffness regulation and has a compact structure. A cam-circular beam mechanism is proposed in the ...

On December 22, President Trump announced a new class of “battleships” that will be 100 times more powerful than previous battleships and larger than any other surface combatant on the oceans. The ...

U.S. President Donald Trump, joined by Secretary of War Pete Hegseth and Secretary of State Marco Rubio, arrives to announce the creation of the “Trump-class” battleship during a statement to the ...