An antenna-on-chip, AoC, system includes a substrate base, an artificial magnetic conductor, AMC, system with embedded guiding structures, EGS, the AMC system being located on the substrate base, and an antenna located onto the AMC system, where the EGS are electrically floating within the AMC system.

A device attachable to a substrate for improving penetration of wireless communication signals is provided. The device is a bendable resin configured to enhance penetration of an incidental radio wave from a first region through the substrate to a second region by forming one or more communication signal beams in the second region. The bendable resin includes a base layer of a first material, and one or more patterned elements each formed by providing a meta-pattern of a second material on the base layer. The first and second materials are different and selected from the group consisting of a dielectric material and a metallic material. Each individual patterned element is configured to tilt the incidental radio wave to form the one or more communication signal beams, wherein each individual communication signal beam is beam-focused at a predetermined focal point or a predetermined focal area in the second region.

A method for constructing a multifunctional antenna structure configured to generate a plurality of radiation patterns includes determining a desired source field associated with the plurality of radiation patterns, and receiving feed locations for a waveguide to an antenna aperture surface. The method may further include placing a metasurface resonator at a first resonator location that exhibits a minimum error relative to the desired source field and satisfies a maximum error threshold relative to the desired source field. The metasurface resonator may be determined based on the feed locations and a plurality of degrees of freedom for the first resonator location. The method may also include discarding a second resonator location in response to determining that no metasurface resonator at the second resonator location satisfies the maximum error threshold. The plurality of degrees of freedom may include metasurface resonator geometries that exhibit different polarizabilities defined in a candidate library.

A metasurface unit cell for use in constructing a metasurface array is provided. The unit cell may include a ground plane layer comprising a first conductive material, and a phase change material layer operably coupled to the ground plane layer. The phase change material layer may include a phase change material configured to transition between an amorphous phase and a crystalline phase in response to a stimulus. The unit cell may further include a patterned element disposed adjacent to the phase change material layer and includes a second conductive material. In response to the phase change material transitioning from a first phase to a second phase, the metasurface unit cell may resonate to generate an electromagnetic signal having a defined wavelength. The first phase may be the amorphous phase or the crystalline phase and the second phase may be the other of the amorphous phase or the crystalline phase.

A decrease in performance of an antenna is suppressed while maintaining metallic design by a metal vapor deposition layer in a cover with antenna function. A back cover includes cover member, a pictorial pattern layer, and a metasurface. The pictorial pattern layer is arranged in a layering direction with respect to the cover member and includes a metal vapor deposition layer. The metasurface is arranged side by side in the layering direction with the pictorial pattern layer. The metasurface amplifies an antenna signal.

Examples disclosed herein relate to a radiating structure. The radiating structure has a transmission array structure having a plurality of transmission paths with each transmission path having a plurality of slots and a pair of adjacent transmission paths forming a superelement. Each superelement has a phase control module to control a phase of a transmission signal. The radiating structure also includes a radiating array structure having a plurality of radiating elements configured in a lattice, with each radiating element corresponding to at least one slot from the plurality of slots and the radiating array structure positioned proximate the transmission array structure. A feed coupling structure is coupled to the transmission array structure and adapted for propagation of a transmission signal to the transmission array structure. The transmission signal is radiated through at least one superelement and at least one of the plurality of radiating elements and has a phase controlled by the phase control module in the at least one superelement.

A system for EMNZ metamaterial-based direct antenna modulation. The system includes a signal generator, a metamaterial switch and an antenna. The signal generator may is configured to generate a microwave signal. The metamaterial switch is configured to generate a modulated microwave signal from the microwave signal. The modulated microwave signal is generated by selectively passing the microwave signal through the metamaterial switch. The metamaterial switch includes a first conductive plate and a first loaded conductive plate. The first loaded conductive plate includes a second conductive plate and a first monolayer graphene. The first monolayer graphene includes a first tunable conductivity. The first monolayer graphene is positioned between the first conductive plate and the second conductive plate. An effective permittivity of the metamaterial switch is configured to be adjusted to a predetermined value. The effective permittivity of the metamaterial switch is adjusted responsive to tuning the first tunable conductivity.

A measurement device for measuring performance of at least one antenna system in a first frequency band and in a second frequency band. The measurement device including an outer chamber having inwardly radio frequency reflective walls configured to enclose the antenna system, an inner chamber deployable inside the outer chamber, the inner chamber having radio frequency absorptive walls configured to enclose the antenna system, a first test antenna arrangement arranged inside the outer chamber and configured for a measurement operation in the first frequency band, and a second test antenna arrangement arranged inside the inner chamber and configured for a measurement operation in the second frequency band, thereby enabling measuring performance of the antenna system in a reflective radio frequency environment by the first test antenna arrangement and measuring performance in an essentially anechoic radio frequency environment by the second test antenna arrangement.

Tires including a bodies formed of one or more tire plies are disclosed. In various implementations, a tire may include several split-ring resonators (SRRs), each associated with a natural resonance frequency configured to shift in response to a change in an elastomeric property of a respective one or more tire plies. The elastomeric property may include one or more of a reversible deformation, stress, or strain. In some implementations, the one or more SRRs may include a first split-ring resonator (SRR) including first carbon particles that may uniquely resonate in response to an electromagnetic ping based at least in part on a concentration level of the first carbon particles within the first SRR and a second SRR including second carbon particles that may uniquely resonate in response to the electromagnetic ping based at least in part on a concentration level of the second carbon particles within the second SRR.

An aspect of the present disclosure is directed to and provides radar-reflecting systems and apparatus that employ metasurfaces to produce enhanced radar cross sections that are greater than those produced by the geometry of the surfaces alone. Another aspect of the present disclosure is directed to and provides heat-ducting systems and apparatus that include metasurfaces. A further aspect of the present disclosure is directed to and provides cards with metasurfaces. Exemplary embodiments utilize fractal plasmonic surfaces for a metasurface.