An electronic device that communicates a packet or a frame is described. This electronic device includes: at least an antenna having an antenna radiation pattern; an interface circuit; and an antenna cover that includes an integrated static lens, where the antenna cover is selected from a set of antenna covers that includes different integrated static lenses. During operation, the interface circuit may transmit, from the antenna, wireless signals corresponding to the packet or the frame, where the integrated static lens modifies the antenna radiation pattern of the antenna. For example, the integrated static lens may cause the wireless signals to converge or diverge. Alternatively, the integrated static lens may change an angular elevation of the antenna radiation pattern and/or may provide a correction for pathloss as a function of angle. Note that the integrated static lens may be a stepwise approximation to a predefined function.

An antenna system for at least one of Elint and Sigint, configured to detect weak electro-magnetic signals, comprises an antenna and a feed manifold, which comprises a plurality of feeds located on a focal surface of the antenna. The antenna is configured to function as a two-dimensional focusing element, having spherical symmetry. The system is configured such that a planar wave-front associated with a electro-magnetic signal, that is impinging on the antenna, is focused by the antenna to a feed, situated at a distance from the antenna corresponding to a focal distance of the antenna along a propagation vector of the wave-front. The spatial field of view of the antenna system is based on a number of feeds and the spacing between feeds. This produces, for each feed, a respective high-gain beam, with direction along the line connecting the center of the spherical symmetry and the feed.

A lens (100) for terahertz radiation, which can be used in an antenna arrangement (400), comprises a cylindrical lens body made of silicon having a planar front surface and a planar back surface. The lens body has a front body region (30) which forms a silicon metamaterial with a relative permittivity that decreases in a lateral direction with increasing radial distance from a cylinder axis. A back body region (20) is immediately adjacent to the front body region and extends to the back surface. It consists of bulk silicon having a laterally constant relative permittivity. The front body region comprises holes that are distributed on the front surface in rings that are concentric with respect to the cylinder axis. The holes extend from the front surface to respective hole bottoms at an equal bottom level in a depth direction. The hole bottoms interface with the back body region.

A lensed multi-beam base station antenna may include a plurality of linear arrays of radiating elements, a plurality of reflectors, a sidelobe suppressor, and a lens. Each array may include a plurality of radiating elements (e.g., two or more radiating elements) that extends forwardly from a planar section of a respective reflector. The sidelobe suppressor may comprise radiofrequency (RF) absorber material that absorbs energy that is emitted by a first of the arrays and that is directed toward a reflector underneath a second of the arrays. The sidelobe suppressor may comprise a RF choke that reduces the RF energy emitted by a first of the arrays that is directed toward a reflector underneath a second of the arrays.

A transmitarray cell (105) comprises a first antenna element (105a) adapted to switching between two phase states, a second antenna element (105b) adapted to switching between two other phase states and between two circular polarization directions and a coupler (201) coupling the first antenna element to the second antenna element.

A radar chip package includes a radar monolithic microwave integrated circuit (MMIC) having a backside, a frontside arranged opposite to the backside, and lateral sides that extend between the backside and the frontside, wherein the radar MIMIC comprises a recess that extends from the backside at least partially towards the frontside; a plurality of electrical interfaces coupled to the frontside of the radar MIMIC; at least one antenna arranged at the frontside of the radar MIMIC; and a lens formed over the recess and the at least one antenna, wherein the lens is coupled to the backside of the radar MMIC.

A radar chip package includes a radar monolithic microwave integrated circuit (MMIC) having a backside, a frontside arranged opposite to the backside, and lateral sides that extend between the backside and the frontside, wherein the radar MIMIC comprises a recess that extends from the backside at least partially towards the frontside; a plurality of electrical interfaces coupled to the frontside of the radar MIMIC; at least one antenna arranged at the frontside of the radar MIMIC; and a lens formed over the recess and the at least one antenna, wherein the lens is coupled to the backside of the radar MMIC.

An antenna device includes: a mounting board including a circuit configured to process a radio signal; a dipole antenna element configured to receive the radio signal, the dipole antenna element being disposed in the mounting board; and a parasitic element including a first conductor wire parallel to the dipole antenna element, a second conductor wire connected to the first conductor wire at a first end of the first conductor wire at an angle larger than 0 degrees and smaller than 180 degrees, and a third conductor wire connected to the first conductor wire at a second end of the first conductor wire at an angle larger than 0 degrees and smaller than 180 degrees, in which at least an end of the second conductor wire is located near the dipole antenna element.

An antenna device includes: a mounting board including a circuit configured to process a radio signal; a dipole antenna element configured to receive the radio signal, the dipole antenna element being disposed in the mounting board; and a parasitic element including a first conductor wire parallel to the dipole antenna element, a second conductor wire connected to the first conductor wire at a first end of the first conductor wire at an angle larger than 0 degrees and smaller than 180 degrees, and a third conductor wire connected to the first conductor wire at a second end of the first conductor wire at an angle larger than 0 degrees and smaller than 180 degrees, in which at least an end of the second conductor wire is located near the dipole antenna element.

A two-port antenna system is proposed that uses a polarization-independent spatial power divider to align the beams from two orthogonally oriented dual-polarized feeds. This antenna system is compatible with fully polarimetric radar and provides high port isolation. It simultaneously provides a common aperture for transmit and receive to minimize radar parallax. The spatial power divider is designed using a combination of all-dielectric metamaterial techniques and the concept of miniaturized-element frequency selective surfaces, and is fabricated on a silicon wafer using standard microfabrication technology.