The disclosed embodiments relate to the design of a system that implements a reflectarray antenna. The system includes a time-modulated metasurface, which is configured to act as a planar reflector for an electromagnetic wave that is radiated by a feeder into free space at an operation frequency f.sub.0. The time-modulated metasurface includes time-modulated unit-cells that provide a nonlinear conversion between f.sub.0 and another desired frequency f.sub.d. The system also includes a phase-delay mechanism, which adjusts a phase delay by acting on a phase applied to a modulation frequency f.sub.m that modulates each unit-cell. The nonlinear conversion and the phase-delay mechanism operate collectively to facilitate angle-independent nonreciprocity by imposing different phase gradients during up-conversion and down-conversion processes, and by preventing generation of certain propagative harmonics due to total internal reflection.

A transmit-array collimating assembly, this collimating assembly being able to convert a first electromagnetic wave radiated from a first focal point and in a first frequency band, into a plane electromagnetic wave of same frequency radiated in a preset first direction, and to convert a second electromagnetic wave radiated from a second focal point and in a second frequency band, into a plane electromagnetic wave of same frequency radiated in the same preset first direction, first and second primary radiating elements solely connected to first and second output ports of a transmitting module, respectively. The first and second primary radiating elements are positioned so as to radiate the first and second electromagnetic waves from the first and second focal points, respectively.

Various antennas elements including antennas arrays can support various communication technologies and can be integrated into different components or subcomponents of a vehicle, including various vehicle light assemblies. The vehicular antennas elements include low profile and/or concealed antenna elements that are inconspicuous aesthetically and do not affect or substantially affect vehicle aerodynamics.

One or more anisotropic lenses, where the permittivity and/or permeability is directional, are used to vary one or more of beamwidth, beam direction, polarization, and other parameters for one or more antennas. Contemplated anisotropic lenses can include conductive or dielectric fibers or other particles. Lenses can be spherical, cylindrical or have other shapes depending on application, and can be rotated and/or positioned. Important applications include land and satellite communication, base station antennas.

One or more anisotropic lenses, where the permittivity and/or permeability is directional, are used to vary one or more of beamwidth, beam direction, polarization, and other parameters for one or more antennas. Contemplated anisotropic lenses can include conductive or dielectric fibers or other particles. Lenses can be spherical, cylindrical or have other shapes depending on application, and can be rotated and/or positioned. Important applications include land and satellite communication, base station antennas.

A wireless signal transceiver includes a main body part, an antenna array, and a refraction element. The antenna array is disposed in the main body part, and is configured to transmit or receive at least one wireless signal beam. The refraction element is disposed at a first end of the main body part, and the first end is opposite to the antenna array. The refraction element is used to receive the wireless signal beam and refracts the wireless signal beam to generate and transmit a plurality of outputted wireless signal beams.

A wireless signal transceiver includes a main body part, an antenna array, and a refraction element. The antenna array is disposed in the main body part, and is configured to transmit or receive at least one wireless signal beam. The refraction element is disposed at a first end of the main body part, and the first end is opposite to the antenna array. The refraction element is used to receive the wireless signal beam and refracts the wireless signal beam to generate and transmit a plurality of outputted wireless signal beams.

Examples disclosed herein relate to a reflectarray antenna for enhanced wireless communication coverage area. A reflectarray antenna for enhanced wireless communication applications includes an array of reflectarray cells that includes a first plurality of conductive elements configured to radiate reflected radio frequency (RF) beams with a first phase shift in a first linear polarization and a second plurality of conductive elements arranged orthogonally to the first plurality of conductive elements and configured to radiate reflected RF beams with a second phase shift that is substantially equivalent to that of the first phase shift in a second linear polarization that is orthogonal to the first linear polarization. Other examples disclosed herein relate to a method of designing a reflectarray antenna and a method of performing pattern synthesis of a reflectarray antenna.

Examples disclosed herein relate to a reflectarray antenna for enhanced wireless communication coverage area. A reflectarray antenna for enhanced wireless communication applications includes an array of reflectarray cells that includes a first plurality of conductive elements configured to radiate reflected radio frequency (RF) beams with a first phase shift in a first linear polarization and a second plurality of conductive elements arranged orthogonally to the first plurality of conductive elements and configured to radiate reflected RF beams with a second phase shift that is substantially equivalent to that of the first phase shift in a second linear polarization that is orthogonal to the first linear polarization. Other examples disclosed herein relate to a method of designing a reflectarray antenna and a method of performing pattern synthesis of a reflectarray antenna.

A unit cell of a transmitter array includes a ground plane; first and second dielectric substrates, arranged on either side of the ground plane, and each having a first surface, oriented toward the ground plane, and a second, opposed, surface; first and second planar antennas, extending on the second surfaces of the first and second dielectric substrates, respectively; and a via, arranged to pass through the first and second dielectric substrates so as to electrically connect the first and second planar antennas; the via being electrically isolated from the ground plane. The unit cell further includes a third planar antenna, extending between the ground plane and the first surface of the first dielectric substrate, and electrically connected to the via.