Optical switching toggles the metasurface ground plane between insulating and conducting states for precise surface-wave control and antenna radiation timing.
Separated reflector units use mechanical displacement to widen high-frequency coverage and avoid powered phase-control complexity.
A conductive shape-memory antenna changes geometry to cover multiple bands and radiation patterns without adding separate antennas.
Coupled resonators and a reference conductor keep reflective plate phase response linear across wide frequency bands.
An integrated lens filter uses permittivity-driven phase delay to suppress fundamental-frequency crosstalk, false targets, and EMC issues.
Voltage-tuned liquid crystal permittivity lets this reflectarray adjust beam direction and resonance frequency without changing antenna size.
An anti-reflective lattice film absorbs diffused radio-wave reflections, while liquid crystal control improves directional reflection and cuts interference.
Phase-controlled antenna sub-arrays create stable nulls in unwanted directions, cutting interference while preserving adaptive beam tuning.
Structural disruptions in a compact dielectric body shape EM wavefronts while reducing reflections, side lobes, and beam-control tradeoffs.
A passive reflecting element array redirects electromagnetic waves by phase distribution to cover communication blind spots without extra base stations or power.