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| Number | Title | Issue Date |
| 7889129 | Lightweight space-fed active phased array antenna system A system for a satellite includes a core system and multiple nodes for generating an active phased array. Each node includes a transceiver for wirelessly receiving a transmit signal from the core system, for wirelessly transmitting the transmit signals to a target, ... | 02/15/2011 |
| 7782255 | System and methods for radar and communications applications A system and methods for radar and communications applications. In one embodiment the present system comprises a wireless, space-fed, phased array of antennas including a plurality of unit cells. A first one of the unit cells includes a first one of the antennas and... | 08/24/2010 |
| 7432856 | Signal simulation device A signal simulation device for testing and developing radio receivers adapted to orientate antenna beams to different radio transmitters and to simultaneously suppress interference signals, comprises an antenna array, a signal generator generating reproducible digit... | 10/07/2008 |
| 7372398 | Electronic target position control at millimeter wave for hardware-in-the-loop applications An apparatus for use in controlling a simulated target position in a millimeter wave, hardware-in-the-loop system includes a pair of horns and a conditioning circuit. The conditioning circuit is capable of generating a pair of output millimeter wave signals, each to... | 05/13/2008 |
| 7369085 | Shared phased array beamformer A shared beamformer flexibly allocates beams among phased array antenna apertures of a satellite (or other type of platform). By sharing the beamformer among the apertures, if one aperture is not providing useful coverage (due to orientation, traffic volume, signal ... | 05/06/2008 |
| 7358890 | Millimetre-wave illumination source An illumination source of predominantly non-directional and incoherent millimeter-wave radiation for illuminating an area for passive millimeter-wave imaging comprises a container with at least a partly reflective internal surface and a plurality of exit apertures a... | 04/15/2008 |
| 7333055 | System and method for microwave imaging using an interleaved pattern in a programmable reflector array An antenna array for use within a microwave imaging system includes a plurality of reflecting antenna elements, each capable of being programmed with respective phase-shifts in a first pattern to direct a first beam of microwave radiation towards a first target, and... | 02/19/2008 |
| 7292182 | Method of calibrating a microwave source The present invention relates to a method for calibrating the phase of a microwave source, in which: a calibration circuit is closed, the calibration circuit comprising an injection channel connected to a measurement channel via the source to be calibrated; a test s... | 11/06/2007 |
| 7283085 | System and method for efficient, high-resolution microwave imaging using complementary transmit and receive beam patterns A scanning panel for use in a microwave imaging system captures a microwave image of a target using two complementary arrays of antenna elements. Each of the antenna elements in a first array is capable of being programmed with a respective phase delay to direct a t... | 10/16/2007 |
| 7283452 | Objective lens having two aspheric surfaces and a phase shifter and optical device including the same An objective lens in which a first wavelength is used in reading a first optical disk, a second wavelength is used in recording or reading a second optical disk, and a phase shifter provided with annular step portions having a center coincident with an optical axis ... | 10/16/2007 |
| 7236750 | Techniques for correcting for phase and amplitude offsets in a MIMO radio device Techniques to correct for phase and amplitude mismatches in a radio device in order to maintain channel symmetry when communicating with another device using MIMO radio communication techniques. Correction for the amplitude and phase mismatches among the plurality o... | 06/26/2007 |
| 7218273 | Method and device for boresighting an antenna on a moving platform using a moving target A technique for boresighting an antenna mounted on a moving platform is described. The technique uses a concurrently moving calibration target. Target navigation data and platform navigation data are used to compensate for movement of the target and the platform. Th... | 05/15/2007 |
| 7181205 | I/Q calibration The amplitude and phase errors of the modulation and demodulation in a transceiver are corrected by a self-calibration procedure in which a test signal is applied to the baseband input of the transmitter, and the output of the modulator is looped back to the input o... | 02/20/2007 |
| 7161530 | System and method for radar calibration using antenna leakage The system and method for radar calibration using antenna leakage is a simplified means of calibrating the channels in amplitude and phase using natural signal leakage between antennas. It utilizes as calibration signal a wideband sinusoidal Frequency Modulated Cont... | 01/09/2007 |
| 7126526 | Phased null radar A method for reducing the interference between a source transmitting pulses and equipments having nominal bandwidths which are outside the nominal bandwidth of the transmitted pulses, but which respond to sideband energy of the pulses. Phase perturbations are applie... | 10/24/2006 |
| 7119733 | Angle-scanning radar system An angle scanning radar system having a group antenna controlled via a beam-shaping network, a coupling device that allows the group antenna to be operated for both the transmitting and receiving directions, and a device to mix radar receiving signals with radar tra... | 10/10/2006 |
| 7116267 | Method for generating calibration signals for calibrating spatially remote signal branches of antenna systems The invention concerns a method for generating calibration signals for calibrating spatially remote signal branches of antenna systems. In accordance with the invention, a base signal is generated by mean of a timer and is fed to a distributor unit for distribution ... | 10/03/2006 |
| 7106265 | Transverse device array radiator ESA An antenna array employing continuous transverse stubs as radiating elements is described, which includes an upper conductive plate structure comprising a set of continuous transverse stubs, and a lower conductive plate structure disposed in a spaced relationship re... | 09/12/2006 |
| 7081858 | Radial constrained lens The invention provides apparatuses for a radial constrained lens in a steerable directional antenna system. The radial constrained lens includes a feed array that excites a continuous radiating aperture through a section of radial waveguide. Feed elements of the fee... | 07/25/2006 |
| 7068219 | Communications system including phased array antenna providing nulling and related methods A phased array antenna may include a plurality of antenna elements, at least one respective phase shifter connected to each antenna element, and at least one respective gain element connected to each antenna element. The phased array antenna may further include at l... | 06/27/2006 |
| 7050019 | Concentric phased arrays symmetrically oriented on the spacecraft bus for yaw-independent navigation A concentric arrangement of multiple spacecraft antennas mounted symmetrically about the yaw axis of rotation or center of gravity of the spacecraft that provides the capability for spacecraft with multiple antennas to maneuver without introducing errors into naviga... | 05/23/2006 |
| 6940453 | Apparatus and method for calibrating reception signal in mobile communication system A method for calibrating a reception signal in a smart antenna system includes: locally generating a reference signal, converting the reference signal into an RF signal, and dividing the RF signal into as many signals as the number of antennas. Phase informat... | 09/06/2005 |
| 6873301 | Diamond array low-sidelobes flat-plate antenna systems for satellite communication An antenna system, to enable communication with a moving vehicle via a satellite, utilizes an array of subarrays contiguously positioned in a diamond-type pattern. Straight edge boundaries of an array can maximize sidelobe degradation resulting from diffraction effe... | 03/29/2005 |
| 6822615 | Wideband 2-D electronically scanned array with compact CTS feed and MEMS phase shifters A microelectromechanical system (MEMS) steerable electronically scanned lens array (ESA) antenna and method of frequency scanning are disclosed. The MEMS ESA antenna includes a wide band feedthrough lens and a continuous transverse stub (CTS) feed array. The wide ba... | 11/23/2004 |
| 6677899 | Low cost 2-D electronically scanned array with compact CTS feed and MEMS phase shifters A microelectromechanical system (MEMS) steerable electronically scanned lens array (ESA) antenna and method of frequency scanning are disclosed. The MEMS ESA antenna includes a MEMS E-plane steerable lens array and a MEMS H-plane steerable linear array. T... | 01/13/2004 |
| 6198433 | Multiple-beam electronic scanning antenna A multiple-beam electronic scanning antenna including an array of phase-shifters (2, Dij). The N simultaneous beams are obtained in N directions by a law of excitation (fij) applied to each computed phase-shifter (Dij) by ... | 03/06/2001 |
| 5959578 | Antenna architecture for dynamic beam-forming and beam reconfigurability with space feed A switch (10) having a beam-forming network (12) generates independently steerable beams (26). One or more of the independently steerable beams couple in radiating communication with selected ones of M beam ports (18). A feeder array (11) or second beam-f... | 09/28/1999 |
| 5945946 | Scanning array antenna using rotating plates and method of operation therefor A scanning array antenna (300) produces a directional beam by differentially rotating two, co-axial, flat phasing plate assemblies (302, 304). Each plate (302, 304) consists of a phase shifting means designed to efficiently pass incident radio frequency (... | 08/31/1999 |
| 5797083 | Self-aligning satellite receiver antenna A method and device for aligning a satellite receiver antenna with a broadcast satellite is disclosed herein. The device includes a receiver for measuring a signal strength from the satellite and issuing commands based on the measurement, a receiver anten... | 08/18/1998 |
| 5734349 | High capacity multibeam antenna with electronic scanning in transmission The invention provides a multibeam antenna comprising: an array 11 of Ne elementary sources 31; energy-focusing optical means comprising a reflector 10 or a lens; the array being situated in the focal zone of said focusing means: and a feed and cont... | 03/31/1998 |
| 5677697 | Millimeter wave arrays using Rotman lens and optical heterodyne An optical heterodyne system provides the radiation source and beam scan control of a millimeter wave (MMW) array antenna. The heterodyne system is an optical feed system to produce the MMW by mixing the optical outputs from two lasers, distribute the sig... | 10/14/1997 |
| 5668629 | Remote tracking system particulary for moving picture cameras and method The system includes a base unit sensitive to infrared (IR) signals transmitted by a mobile remote unit to an IR receiver which is placed behind a rotating set of signal blocking blinders whose position at any time defines a view angle with a position know... | 09/16/1997 |
| 5652750 | Optical satellite feeder links A cellular communications satellite system is disclosed which comprises a plurality of ground-based base stations, mobile stations, and at least one orbiting satellite for relaying signals between the base stations and mobile stations. A Plurality of feed... | 07/29/1997 |
| 5579015 | Electronic sweep device with active lens and integrated light source The invention pertains to an electronic sweep device with integrated active lens and light source. The device includes a bundling of superimposed channels C which are separated by thin metal planes P that include, in front of a metal short-circuit plane (... | 11/26/1996 |
| 5559519 | Method and system for the sequential adaptive deterministic calibration of active phased arrays Apparatus for calibrating a phased array antenna having a plurality of active modules and a test manifold. An RF antenna, which is both a transmitting and receiving antenna is positioned at a far field range from the antenna to be calibrated. A receiver i... | 09/24/1996 |
| 5515060 | Clutter suppression for thinned array with phase only nulling An active array antenna for use, for example, in a radar system, includes elemental antennas, each with a T/R module, distributed over a circular aperture. For lowest cost, the aperture is thinned. The T/R modules are operated at maximum output, to achiev... | 05/07/1996 |
| 5239668 | Satellite signalling system This invention relates to a satellite signalling system. A ground station receives paging signals from an earth-bound terminal, and an up-link radio transmitter/antenna transmits paging signals and control signals to a satellite in earth orbit. An up-link... | 08/24/1993 |
| 5128687 | Shared aperture antenna for independently steered, multiple simultaneous beams An antenna including a lens that has an array of radiating elements located on a focal arc, each radiating element corresponding to a different transmission beam direction; and a beam launcher having a plurality of phased arrays and a plurality of interna... | 07/07/1992 |
| 5103233 | Radar system with elevation-responsive PRF control, beam multiplex control, and pulse integration control responsive to azimuth angle A multipurpose system provides radar surveillance for air traffic control purposes. The system includes four separate active phased-array antennas, each with &#b1;45° coverage in azimuth, from 0° to 60° in elevation. Each antenna element of each phased... | 04/07/1992 |
| 5084707 | Antenna system with adjustable beam width and beam orientation An antenna system provided with an adjustable reflection coefficient includes at least one radiation source (1), a reflective surface (12) positioned in the path of the radiation generated by the active radiation source (1) and 9 light-generating means (1... | 01/28/1992 |
