Abstract: Disclosed is an antenna having a plurality of radiators disposed in a ring or arc around a Luneburg lens. Each of the radiators (e.g., flared-notch radiators) has a center radiating axis that intersects with the center of the Luneburg lens. Each of the radiators radiate into the Luneburg lens such that the Luneburg lens substantially planarizes the beam emitted by each radiator (on transmit) and focuses an incoming wavefront into the radiator (on receiver). This not only enables having numerous well-controlled individual beams, it also allows for combining radiators to create well-defined sector beams with minimal sidelobes and fast rolloff.

Abstract: Disclosed is a system for performing Massive MIMO or Multi-User MIMO using a gradient index sphere (such as a Luneburg Lens). The gradient index sphere may have a plurality of radiators disposed along its outer surface such that each radiator radiates inward toward the center of the sphere so that the sphere focuses the energy from each radiator to form a tight beam. This provides for improved uplink gain for detecting and locating a mobile device within range of the system, and it enables high performance with reduced signal processing required for array-based beamforming.

Abstract: A transparent broadband antenna has two conductive leaves that are configured to be axially symmetric about two orthogonal axes. The transparent broadband antenna is designed as having two back-to-back Vivaldi radiators and four identically curved outer corners. The back-to-back Vivaldi radiators provide high performance from 617 MHz through 7 GHz while preventing return waves that may cause impedance mismatch. The antenna further comprises a feed structure that enables direct coupling from an RF cable to the two conductive leads, obviating the need for a matching circuit and subsequent bandwidth limitations.

Abstract: Disclosed is an antenna having a toroidal gradient index lens, whereby a radiator may be disposed within the inner hole of the toroid. The antenna may include a mechanism that translates the radiator along the z-axis whereby an “upward” translation of the radiator along the z-axis tilts the antenna's elevation beam pattern downward. The radiator disposed within the hole of the toroid lens may be a dipole or a multi-sector radiator, such as a tri-sector radiator. Disclosed are two variations of the toroidal lens: a toroid shape, and a cylindrical toroidal shape.

Abstract: Disclosed is a telecommunications antenna having a plurality of cloaked low band (LB) and high band (HB) dipoles. The LB and HB dipoles provide cloaking by breaking the dipoles into dipole segments, and providing conductive cloaking elements over the gaps between dipole segments to form a plurality of capacitors along the dipole. The capacitors along the LB dipoles provide a low impedance to LB RF signals and a high impedance to HB signals. The capacitors formed on the HB dipoles provide a low impedance to RF signals and high impedance to harmonics of the LB RF signals. This cross-cloaking of dipoles enables more dense arrangements of LB and HB dipoles on an antenna array face, providing opportunities to arrange, for example, the LB dipoles with an array factor that results in an advantageous fast roll off gain pattern.

Abstract: Disclosed is an antenna having a plurality of radiators disposed in a ring or arc around a Luneburg lens. Each of the radiators (e.g., flared-notch radiators) has a center radiating axis that intersects with the center of the Luneburg lens. Each of the radiators radiate into the Luneburg lens such that the Luneburg lens substantially planarizes the beam emitted by each radiator (on transmit) and focuses an incoming wavefront into the radiator (on receiver). This not only enables having numerous well-controlled individual beams, it also allows for combining radiators to create well-defined sector beams with minimal sidelobes and fast rolloff.

Abstract: Disclosed is a telecommunications antenna having a plurality of cloaked low band (LB) and high band (HB) dipoles. The LB and HB dipoles provide cloaking by breaking the dipoles into dipole segments, and providing conductive cloaking elements over the gaps between dipole segments to form a plurality of capacitors along the dipole. The capacitors along the LB dipoles provide a low impedance to LB RF signals and a high impedance to HB signals. The capacitors formed on the HB dipoles provide a low impedance to RF signals and high impedance to harmonics of the LB RF signals. This cross-cloaking of dipoles enables more dense arrangements of LB and HB dipoles on an antenna array face, providing opportunities to arrange, for example, the LB dipoles with an array factor that results in an advantageous fast roll off gain pattern.

Abstract: Disclosed is a telecommunications antenna having a plurality of cloaked low band (LB) and high band (HB) dipoles. The LB and HB dipoles provide cloaking by breaking the dipoles into dipole segments, and providing conductive cloaking elements over the gaps between dipole segments to form a plurality of capacitors along the dipole. The capacitors along the LB dipoles provide a low impedance to LB RF signals and a high impedance to HB signals. The capacitors formed on the HB dipoles provide a low impedance to RF signals and high impedance to harmonics of the LB RF signals. This cross-cloaking of dipoles enables more dense arrangements of LB and HB dipoles on an antenna array face, providing opportunities to arrange, for example, the LB dipoles with an array factor that results in an advantageous fast roll off gain pattern.