Abstract: The deployment of Ka-band radar necessitates addressing increased losses due to rain and free-space propagation, in addition to achieving low sidelobe levels (SLL). Substrate integrated ...

Add Yahoo as a preferred source to see more of our stories on Google. The spring refresh routine involves smaller daily tasks. (Carlos Barquero via Getty Images) Now the days are getting lighter, and ...

Abstract: Large-scanned antenna arrays need to be periodically calibrated to correct for errors in excitation amplitude and phase, which degrade performance. The ability to adjust complex excitations ...