Free-space transmission of terahertz (THz) waves opens great opportunities for wireless
applications including sensing and communication in the 6G era and beyond. Owing to their …

Terahertz (THz) science and technology have greatly progressed over the past two decades
to a point where the THz region of the electromagnetic spectrum is now a mature research …

Over the last 20 years, thin and lightweight optical elements have become very desirable,
especially for the terahertz (THz) range. Reduction of the volume of optical elements …

Tunable optoelectronics have attracted a lot of attention in recent years because of their
variety of applications in next-generation devices. Among the potential uses for tuning …

With their self-tuned time-varying responses, waveform-selective metasurfaces embedded
with nonlinear electronics have shown fascinating applications, including distinguishing …

This work experimentally demonstrates a wide-angle beam steering based on an active
conformal metasurface lens. Integrated with microwave varactors, the transmission phase of …

In this communication, a wideband reconfigurable reflectarray based on reflector-backed
active second-order bandpass frequency selective surface (FSS) is presented. The reflector …

In this communication, we experimentally demonstrate a frequency-and beam-
reconfigurable lens antenna based on an active second-order bandpass frequency …

Besides the prohibitive cost, complexity, and baseband scale, the development of millimeter-
wave (mmWave) digital-beamforming fifth-generation (5G) frontends is facing a physical …

The authors report a novel approach for designing tunable and reconfigurable bandstop
filters by employing bias‐free optically‐controlled photoconductive radio frequency (RF) …