Abstract: This paper presents a high-efficiency reconfigurable antenna array architecture that utilizes varactor diodes for beam steering at 28 GHz. To enable efficient beamforming without increasing ...

Abstract: Most conventional reconfigurable transmitarrays rely on multilayer frequency-selective surfaces and PIN diodes, limiting transmittance and multibit modulation, which constrains beamforming ...

Researchers from Southeast University have developed a novel amplifying and filtering reconfigurable intelligent surface ...

A diode is a device that allows electric current to flow in only one direction, from its anode towards its cathode but not the other way around. There is plenty of online material explaining diode ...