We present a novel horn antenna to generate radio waves bearing Orbital Angular Momentum (OAM) by using a circular waveguide. The OAM mode ℓ = 1 is generated by using a spiral phase plate (SPP) inside ...

As such, all components within an aviation-related system must operate perfectly for everything to run smoothly.SummaryWhat ...

Axle-box bearing condition monitoring is important for the prognostics and health management (PHM) of high-speed trains. Temperature is an important indicator of the health of rotating machinery. It ...