Antennas having a multi-beam (e.g., dual beam, etc.) launcher and methods for using the same are described. In some embodiments, the antenna comprises: an array of antenna elements; two parallel plate waveguides coupled to the array of antenna elements, the two parallel plate waveguides sharing a common radial plane and arranged in a stacked configuration; and a dual feed launcher to launch first and second TEM waves into the two parallel plate waveguides, the first and second TEM waves being different and being simultaneously launched in the two parallel plate waveguides.

The sealing material composition of the disclosure includes an unsaturated carbonyl compound having at least two unsaturated carbonyl groups and a curing agent that is thermally reactive with the unsaturated carbonyl compound and contains a compound having at least two of one or more kinds of functional groups selected from the group consisting of a mercaptan group, a hydroxyl group, and a secondary amine group.

A method and apparatus for performing satellite signal acquisition are described. In one embodiment, a method for using a satellite antenna comprises estimating antenna orientation when the antenna is in motion, including estimating yaw using one or more sensors; and performing signal acquisition to search for a satellite signal with the satellite antenna by interleaving a plurality of signal searches performed by the satellite antenna, the plurality of signal searches being based on an estimated yaw.

Multiband guiding structures for antennas and methods for using the same are described. In one embodiment, an antenna comprises: an antenna aperture with radio-frequency (RF) radiating antenna elements; and a center-fed, multi-band wave guiding structure coupled to the antenna aperture to receive a feed wave in two different frequency bands and propagate the feed wave to the RF radiating antenna elements of the antenna aperture.

Antennas such as flat panel, leaky wave antennas with directional coupler feeds and waveguides are disclosed. In one example, an antenna includes a surface having antenna elements, a guided wave transmission line, and a coupling surface. The guided wave transmission line provides a guided feed wave. The coupling surface is between and separates the guided wave transmission line and the surface having antenna elements. The coupling surface controls coupling of the guided feed wave to the antenna elements. The coupling surface can also spatially filter the guided feed wave to provide a more uniform power density for the antenna elements. The guided feed wave can be a high power density electromagnetic wave or a density radially decaying electromagnetic wave.

A 5G antenna system is disclosed that comprises a substrate and at least one antenna element configured to transmit and receive 5G radio frequency signals. The at least one antenna element is coupled to the substrate. The substrate comprises a polymer composition that comprises a polymer matrix containing at least one polymer having a glass transition temperature of about 30° C. or more and at least one laser activatable additive wherein the polymer composition exhibits a dissipation factor of about 0.1 or less, as determined at a frequency of 2 GHz.

A single-layer Wide Angle Impedance Matching (WAIM) and method for using the same are described. In one embodiment, the antenna comprises: an aperture having a plurality of antenna elements operable to radiating radio-frequency (RF) energy; and a single-layer wide angle impedance matching (WAIM) structure coupled to the aperture to provide impedance matching between the antenna aperture and free space.

An apparatus is disclosed herein for a cylindrically fed antenna and method for using the same. In one embodiment, the antenna comprises: an antenna feed to input a cylindrical feed wave; a first layer coupled to the antenna feed and into which the feed wave propagates outwardly and concentrically from the feed; a second layer coupled to the first layer to cause the feed wave to be reflected at edges of the antenna and propagate inwardly through the second layer from the edges of the antenna; and a radio-frequency (RF) array coupled to the second layer, wherein the feed wave interacts with the RF array to generate a beam.

An apparatus is disclosed herein for a cylindrically fed antenna and method for using the same. In one embodiment, the antenna comprises an antenna feed to input a cylindrical feed wave and a tunable slotted array coupled to the antenna feed.

An antenna includes a waveguide defined by a gap between a backplane with radial support ribs and a facesheet, a teardrop-shaped feed pin at a center of the backplane, and a foam spacer between the backplane and facesheet. An outward facing side of the facesheet includes thermal paint. The facesheet includes pairs of through-hole slots for releasing portions of a wave of radiation in the waveguide to generate a transmit-beam or to receive the receive-beam to generate the wave of radiation. The pairs may be disposed as a spiral array about a center of the facesheet. Each of the pairs may include first and second slots. A length of the second slot is oriented approximately perpendicular to a length of the first slot. Dispositions of the slots are set by a computer process. The dispositions optimize a trade-off between transmit and receive gains.