The invention relates to a light element of a vehicle with at least one light source configured to emit light rays, a reflective layer. With a pattern made wholly or partly in the reflective layer. The light element further including an optical element configured to project the light rays from the at least one light source towards the reflective layer. With a dark layer extending along the optical element on the side opposite the reflective layer.

A multi-feed antenna with a shared radiator comprises a ground capacitor, a first antenna module, a second antenna module, a first feed-in module, a second feed-in module and at least one sensing module. The first antenna module is grounded through the ground capacitor. The second antenna module is coupled with the first antenna module. The first feed-in module and the second feed-in module are connected with the second antenna module, and the first feed-in module and the second feed-in module are used to receive or send radio frequency signals through the first antenna module and the second antenna module. The at least one sensing module is connected with the first antenna module or the second antenna module, and the at least one sensing module is used to sense a capacitance value of a parasitic capacitance of the first antenna module or the second antenna module.

A GNSS antenna 26 and an inertial measurement unit 25 are placed at a longitudinal center of a unit base 55 mountable onto a work vehicle. A wireless communication unit 27 is placed at the longitudinal one end side of the unit base 55. A wireless communication antenna 28 of the wireless communication unit 27 is placed in a front part of the unit base 55, which is located on the front side of a vehicle body when the unit base 55 is mounted on the work vehicle. The GNSS antenna 26 is provided above the inertial measurement unit 25.

Systems and methods for designing, optimizing, patterning, forming, and manufacturing symphotic structures are described herein. A symphotic structure may be formed by identifying a continuous refractive index distribution calculated to convert each of a plurality of input reference waves to a corresponding plurality of output object waves. The continuous refractive index distribution can be modeled as a plurality of subwavelength voxels. The system can calculate a symphotic pattern as a three-dimensional array of discrete dipole values to functionally approximate the subwavelength voxels. A symphotic structure may be formed with a volumetric distribution of dipole structures. A dipole value, such as a dipole moment (direction and magnitude) of each dipole is selected for the volumetric distribution to convert a plurality of input reference waves to a target plurality of output object waves.

Systems and methods for designing, optimizing, patterning, forming, and manufacturing symphotic structures are described herein. A symphotic structure may be formed by identifying a continuous refractive index distribution calculated to convert each of a plurality of input reference waves to a corresponding plurality of output object waves. The continuous refractive index distribution can be modeled as a plurality of subwavelength voxels. The system can calculate a symphotic pattern as a three-dimensional array of discrete dipole values to functionally approximate the subwavelength voxels. A symphotic structure may be formed with a volumetric distribution of dipole structures. A dipole value, such as a dipole moment (direction and magnitude) of each dipole is selected for the volumetric distribution to convert a plurality of input reference waves to a target plurality of output object waves.

The present disclosure provides a broadband dual-polarized solar cell antenna and an antenna array. The broadband dual-polarized solar cell antenna includes an antenna dipole layer, an isolation layer, a solar cell layer, and a ground that are arranged sequentially from top to bottom, where the antenna dipole layer is connected to the ground and a radio frequency (RF) coaxial connector through a metal feeding probe structure, the solar cell layer is placed on the ground, the isolation layer is located between the antenna dipole layer and the solar cell layer, and the isolation layer is made of a transparent material. The present disclosure is small in sunlight shielding and high in transparency, and has a broadband dual-polarized wide-angle scanning capability, which ensures performance of the antenna and power generation efficiency of the solar cell, and is highly applicable in engineering.

A pointing unit 102 is for use with a free space optical communications terminal 100 including an optical source 104. The pointing unit 102 includes a first portion 106 having a mirrored surface 108, the first portion 106 being orientatable relative to an optical beam 110 produced by the optical source 104 and incident on the mirrored surface 108 in use to direct a reflection 112 of the optical beam 110 from the mirrored surface 108 towards a target 107. The first portion 106 further includes a directional radio frequency antenna 114.

Receiving antenna (1) for terahertz radiation (30), comprising an antenna conductor (2) and a first photoconductor (3) connected to the antenna conductor (2) and activatable by light (9), the first photoconductor (3) allowing, in an activated state, an antenna current (28) flowing through the antenna conductor (2) and the first photoconductor (3), characterized in that the receiving antenna (1) comprises at least one second photoconductor (4) connected to the antenna conductor (2) and activatable by light (9), the second photoconductor connected in parallel with the first photoconductor (3) and, in an activated state, allowing an antenna current (28) flowing through the antenna conductor (2) and the second photoconductor (4), wherein at least one respective high-pass filter (8) is connected between each of the photoconductors (3, 4) and the antenna conductor (2). The invention further relates to a receiver for terahertz radiation (30), a terahertz system, and a method for generating and detecting terahertz radiation (30) using such a terahertz system.

Receiving antenna (1) for terahertz radiation (30), comprising an antenna conductor (2) and a first photoconductor (3) connected to the antenna conductor (2) and activatable by light (9), the first photoconductor (3) allowing, in an activated state, an antenna current (28) flowing through the antenna conductor (2) and the first photoconductor (3), characterized in that the receiving antenna (1) comprises at least one second photoconductor (4) connected to the antenna conductor (2) and activatable by light (9), the second photoconductor connected in parallel with the first photoconductor (3) and, in an activated state, allowing an antenna current (28) flowing through the antenna conductor (2) and the second photoconductor (4), wherein at least one respective high-pass filter (8) is connected between each of the photoconductors (3, 4) and the antenna conductor (2). The invention further relates to a receiver for terahertz radiation (30), a terahertz system, and a method for generating and detecting terahertz radiation (30) using such a terahertz system.

An automobile antenna assembly including a housing adapted for installation on a roof of an automobile, the housing having a base portion and a fin portion extending from the base portion, a radio antenna disposed within the fin portion, and a photo radiation intensity sensor disposed within the base portion, the photo radiation intensity sensor including a first light detecting element located on a first side of the fin portion and a second light detecting element located on a second side of the fin portion opposite the first side, wherein at least a portion of the base portion is translucent for allowing light to be received by the first and second light detecting elements, the fin portion providing a light barrier between the first light detecting element and the second light detecting element.