Abstract: Systems, apparatuses, and methods to response to distinguish a ghost target from an actual target based on radar signals is provided. In particular, the disclosure provides an intrusion detection system adapted to receive radar signals and distinguish a potential ghost target from a legitimate target based on a signal to noise ratio of the radar signals and a range to the ghost target and the legitimate target.

Abstract: Systems, apparatuses, and methods to response to distinguish a ghost target from an actual target based on radar signals and ranges determined from the radar signals. In particular, the disclosure provides an intrusion detection system receiving ranges and velocities for targets detected based on radar signals, determining a potential ghost target from the received velocities and confirming the potential ghost target based on estimated ranges and perturbations of the vehicle speed.

Abstract: Systems, apparatuses, and methods to response to distinguish a ghost target from an actual target based on radar signals is provided. In particular, the disclosure provides an intrusion detection system adapted to receive radar signals and distinguish a potential ghost target from a legitimate target based on a signal to noise ratio of the radar signals and a range to the ghost target and the legitimate target.

Abstract: Systems, apparatuses, and methods to response to distinguish a ghost target from an actual target based on radar signals and ranges determined from the radar signals. In particular, the disclosure provides an intrusion detection system receiving ranges and velocities for targets detected based on radar signals, determining a potential ghost target from the received velocities and confirming the potential ghost target based on estimated ranges and perturbations of the vehicle speed.

Abstract: Certain embodiments herein are directed to managing wireless spectrum, which may include recommending or transmitting spectrum usage changes to one or more wireless devices. A spectrum management system comprising one or more computers may receive spectrum usage information associated with one or more wireless devices. The spectrum management system may generate a spectrum usage map based on the received information. Based on the spectrum usage map, a spectrum usage change is determined and transmitted to one or more wireless devices. The wireless devices may change their operation in accordance with the spectrum usage change.

Abstract: Embodiments of an optically transparent antenna are generally described herein. In some embodiments, the optically transparent antenna may comprise a plurality of electrically-isolated conductive patches arranged on a non-conductive surface. A combination of a size of the conductive patches and a spacing between the conductive patches is less than a human visual acuity for a predetermined viewing distance so that the patches are not be visible or perceptible to a human. In some embodiments, optically transparent antenna may serve as one or more antennas on a mobile platform.

Abstract: Certain embodiments herein are directed to managing wireless spectrum, which may include recommending or transmitting spectrum usage changes to one or more wireless devices. A spectrum management system comprising one or more computers may receive spectrum usage information associated with one or more wireless devices. The spectrum management system may generate a spectrum usage map based on the received information. Based on the spectrum usage map, a spectrum usage change is determined and transmitted to one or more wireless devices. The wireless devices may change their operation in accordance with the spectrum usage change.

Abstract: Embodiments of an optically transparent antenna are generally described herein. In some embodiments, the optically transparent antenna may comprise a plurality of electrically-isolated conductive patches arranged on a non-conductive surface. A combination of a size of the conductive patches and a spacing between the conductive patches is less than a human visual acuity for a predetermined viewing distance so that the patches are not be visible or perceptible to a human. In some embodiments, optically transparent antenna may serve as one or more antennas on a mobile platform.

Abstract: An improved varactor diode (20, 50) having first (45) and second (44) terminals is obtained by providing a substrate (22, 52) having a first surface (21, 51) in which are formed isolation regions (28, 58) separating first (23, 53) and second (25, 55) parts of the diode (20, 50). A varactor junction (40, 70) is formed in the first part (23, 53) and having a first side (35, 66) coupled to the first terminal (45) and a second side (34, 54) coupled to the second terminal (44) via a sub-isolation buried layer (SIBL) region (26, 56) extending under the bottom (886) and partly up the sides (885) of the isolation regions (28, 58) to a further doped region (30, 32; 60, 62) ohmically connected to the second terminal (44). The first part (36, 66) does not extend to the SIBL region (26, 56). The varactor junction (40, 70) desirably comprises a hyper-abrupt doped region (34, 54).