Abstract: Systems, devices, and methods related to antenna elements with perforations and augmentations are provided. An example patch antenna structure includes a first conductive patch on a first layer of the structure, where the first conductive patch includes one or more perforations at a periphery of a first side of the first conductive patch, and one or more extended conductive portions at a second side of the first conductive patch, the second side opposite the first side; a ground plane on a ground layer of the structure, the ground layer spaced apart from the first layer; and a first signal feed to couple a signal to the first conductive patch. In an example, an individual extended conductive portion of the one or more extended conductive portions may compensate a radiation pattern associated with a corresponding one of the one or more perforations.

Abstract: Aspects of this disclosure relate to an antenna cell. An antenna cell may include a first circularly polarized dipole antenna that includes a first pair of differently fed conductive elements, the first circularly polarized dipole antenna being right hand circularly polarized. The antenna cell may include a second circularly polarized dipole antenna that includes a second pair of differently fed conductive elements, the second circularly polarized dipole antenna being left hand circularly polarized. The first circularly polarized dipole antenna and the second circularly polarized dipole antenna may be geometrically orthogonal and configured to radiate concurrently. The first circularly polarized dipole antenna may be positioned adjacent to the second circularly polarized dipole antenna.

Abstract: Aspects of this disclosure relate to an antenna array. An antenna array may include a first circularly polarized dipole antenna that includes a first pair of conductive elements. The antenna array may include a second circularly polarized dipole antenna that includes a second pair conductive elements, the second pair of conductive elements being geometrically orthogonal to the first pair of conductive elements. The antenna array may include a beamformer integrated circuit configured to drive the second circularly polarized dipole antenna such that the second circularly polarized dipole antenna transmits a first radio frequency signal while the first circularly polarized dipole antenna receives a second radio frequency signal. The first radio frequency signal can have a different polarization and be in a different frequency band than the second radio frequency signal.

Abstract: New antenna designs for realizing circularly-polarized antennas with a wide scanning range are disclosed. The designs h are based on arranging four sequentially fed antenna patches to be considered as a single antenna element, referred to as a “super-element,” in the overall phased array. An example super-element includes relatively short transmission lines to provide excitations for the vertically and horizontally polarized fields, with the transmission lines for the vertically and horizontally polarized fields being perpendicular to one other. A parasitic transmission line may be placed around a part of each antenna patch of the super-element to serve as a coupler to further enforce the field vector direction for keeping the circular polarization. With such designs, an axial ratio below 3.6 dB for scanning angles of at least 75 degrees at 39.5 GHz may be achieved.

Abstract: Systems, devices, and methods related to dual wideband antennas with arbitrary frequency ranges are provided. An example antenna structure includes a high-band patch antenna to wirelessly communicate a first signal in a first frequency band; a low-band patch antenna to wirelessly communicate a second signal in a second frequency band lower than the first frequency band, wherein the low-band patch antenna is stacked vertically below the high-band patch antenna and spaced apart from the high-band patch antenna by a dielectric substrate; a high-band excitation via electrically coupled to the high-band patch antenna; and a low-band excitation via electrically coupled to the low-band patch antenna, wherein the high-band excitation via is separate from the low-band excitation via.

Abstract: Systems, devices, and methods related to antenna elements with perforations and augmentations are provided. An example patch antenna structure includes a first conductive patch on a first layer of the structure, where the first conductive patch includes one or more perforations at a periphery of a first side of the first conductive patch, and one or more extended conductive portions at a second side of the first conductive patch, the second side opposite the first side; a ground plane on a ground layer of the structure, the ground layer spaced apart from the first layer; and a first signal feed to couple a signal to the first conductive patch. In an example, an individual extended conductive portion of the one or more extended conductive portions may compensate a radiation pattern associated with a corresponding one of the one or more perforations.

Abstract: A dual polarized waveguide device includes a first waveguide that defines a first linear signal propagation path, a second waveguide that defines a second linear signal propagation path that is parallel to the first linear signal propagation path, and a polarization selective coupling interface coupling the first and second waveguides, the polarization selective coupling interface being configured to enable horizontally polarized signals to pass between the first and second linear propagation paths and prevent vertically polarized signals from passing between the first and second linear propagation paths.

Abstract: A dual polarized waveguide device includes a first waveguide that defines a first linear signal propagation path, a second waveguide that defines a second linear signal propagation path that is parallel to the first linear signal propagation path, and a polarization selective coupling interface coupling the first and second waveguides, the polarization selective coupling interface being configured to enable horizontally polarized signals to pass between the first and second linear propagation paths and prevent vertically polarized signals from passing between the first and second linear propagation paths.