It looks like an antenna — could it be a walkie talkie? A signal jammer? See what one expert says about the object seen in doorbell-camera footage.

Abstract: A low radar cross section (RCS) antenna designed with band-notched absorber is described. First, a dual-polarization absorber with relative bandwidth more than 80% is designed using loaded ...

Abstract: In this work, a dual-mode, dual-polarization fully-woven textile antenna for simultaneous wireless information and power transfer in the 2.4 GHz band is presented. It is based on a square ...

Key market opportunities include the expansion of defense communication infrastructure, rising demand for advanced radar and ...