Abstract: A dual-band circularly-polarized (CP) antenna array based on the substrate integrated waveguide (SIW) in Ka-band is present in this paper. The antenna is consisted of SIW resonant cavity ...

Abstract: This article theoretically clarifies the estimation accuracy of phased-array calibration using beam-steering modes. Beam-steering modes can be potentially employed to estimate the element ...

A 30 second video clip shows a boat bobbing in the water. Then, a fireball and a huge plume of smoke. President Trump posted the footage on social media this week, saying he ordered the U-S military ...