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| Number | Title | Issue Date |
| 8102296 | Electromagnetic conductor reflecting plate and antenna array thereof and radar thereof and communication apparatus thereof An exemplary example of the present disclosure proposes an electromagnetic conductor reflecting plate including a perfect electronic conductor and at least two artificial magnetic conductors, wherein the each of the artificial magnetic conductor is disposed on arbit... | 01/24/2012 |
| 7965219 | Patterned optical material and metamaterial for protection from and defeat of directed energy A structure is described that includes a plurality of columnar pieces of metamaterial, and a plurality of columnar pieces of non-metamaterial. The columnar pieces are arranged in an alternating pattern adjacent one another, and the metamaterial and the non-metamater... | 06/21/2011 |
| 7948425 | Expandable signal calibration target A high frequency signal calibration target deployable in outer space includes an expandable and electrically conductive symmetric structure. The structure may mechanically expand from a stowed configuration to a deployed configuration. Scatter of high frequency sign... | 05/24/2011 |
| 7427945 | Positioning system with co-polarized and cross-polarized mapping A local positioning system using co-polarized and cross-polarized radar mapping is provided. In one embodiment of the method, at least a first electromagnetic pulse having a first polarization is transmitted. A first return signal preferentially having the first pol... | 09/23/2008 |
| 7400287 | Smart chaff Missile deflector systems for protecting a vehicle from threats that use an infrared sensor for guidance are disclosed. An exemplary missile deflector system can include, for example, a radiation source and one or more deployable smart chaff elements. The light sour... | 07/15/2008 |
| 7385551 | Polarization sensitive synthetic aperture radar system and method for local positioning A positioning system includes a passive, isotropic reflecting landmark at a fixed position and a device. The device transmits an electromagnetic pulse having a circular polarization and receives a return signal over a period of time. The return signal includes a ref... | 06/10/2008 |
| 7369847 | Fixed cell communication system with reduced interference A communication system has a high altitude communication device that has an antenna for directing beams to a fixed cell pattern with a polarity of cells. A specific pattern of cells having the same communication resource is provided. Preferably, cells having the sam... | 05/06/2008 |
| 7365703 | Radar reflector A radar reflector including a first and a second radar corner. The radar corners are formed by an essentially rectangular first flat plate and a second and a third essentially flat plate arranged perpendicular to the first plate at two perpendicular edges of the fir... | 04/29/2008 |
| 7355548 | Processing of tank signal in radar level gauge system A method and a system for processing a reflected microwave signal generated by a radar level gauge system arranged to transmit microwaves towards the material in the tank, and receive a reflection of said microwave signal as a tank signal. The tank signal is process... | 04/08/2008 |
| 7336216 | Parachuted radar decoy A radar decoy having radar reflectors disposed in the interior of the inflated canopy of a descending parachute as a first set of four corner reflectors, and a second set of corner reflectors disposed on the exterior of the canopy integral with the first set of corn... | 02/26/2008 |
| 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 |
| 7333044 | Rocket-powered sensor target assembly A rocket tube for housing a reloadable rocket motor is connected to a spacer element and a wire-rider element. A sensor target for reflecting radar signals is screwably attached to the rocket tube. The sensor target is provided with a plug for effectively sealing on... | 02/19/2008 |
| 7327304 | System and method for minimizing background noise in a microwave image using a programmable reflector array A microwave imaging system captures a microwave image of a target and minimizes noise in the microwave image using phase differentiation. A reflector antenna array is provided including a plurality of antenna elements for reflecting microwave radiation towards the t... | 02/05/2008 |
| 7315275 | Positioning system with intentional multi-path signal A positioning system includes a device, having an antenna and a reflector with a known position proximate to the antenna, that transmits at least an electromagnetic pulse having a carrier signal frequency. The device receives a return signal over a period of time, w... | 01/01/2008 |
| 7304617 | Millimeter-wave transreflector and system for generating a collimated coherent wavefront A planar multi-layer transreflector for generating collimated coherent energy comprises one or more of insulating layers between two or more metallic layers. The transreflector substantially reflects a cross-polarized component of an incident millimeter-wave signal ... | 12/04/2007 |
| 7303452 | Kayak paddle with safety light A kayak paddle safety lighting system incorporated into a kayak paddle that may serve as a set of illumination or running lights more effective than current deck mounted running lights. The lighting system includes an operational switch located in the handle of the ... | 12/04/2007 |
| 7301507 | Reflector comprising a core having a thickness that varies in accordance with a given pattern The present invention relates to a reflector for a reflector antenna. The reflector includes a reflective surface in the form of a first skin, wherein the first skin is adherent to a core that is substantially thicker than the first skin. A portion of the core not a... | 11/27/2007 |
| 7301493 | Meta-materials based upon surface coupling phenomena to achieve one-way mirror for various electro-magnetic signals A one-way reflective sensor shield with an increased bandwidth meta-materials coating is provided which substantially reduces or eliminates deleterious electronic signatures and backscattering. The one-way reflective sensor shield with meta-materials coating operate... | 11/27/2007 |
| 7256753 | Synthesis of metamaterial ferrites for RF applications using electromagnetic bandgap structures By configuring a high impedance frequency selective surface (HZ-FSS) structure for the appropriate values of surface impedance (surface resistance and surface reactance), a high frequency artificial ferrite metamaterial can be synthesized with almost any desired val... | 08/14/2007 |
| 7250901 | Synthetic aperture radar system and method for local positioning A positioning system includes a passive, isotropic reflecting landmark at a fixed position and a device. The device transmits an electromagnetic pulse having a circular polarization and receives a return signal over a period of time. The return signal includes a ref... | 07/31/2007 |
| 7248209 | Radar apparatus The present invention relates to a radar apparatus that uses a plurality of transmitting/receiving antennas A1-A4 and receives a reflected wave, of a transmitted wave, reflected from a target. By utilizing the property that the path of the transmitted ... | 07/24/2007 |
| 7209083 | Radio-frequency device In a radio-frequency device in which a dielectric layer, a first conductive layer and a second conductive layer are stacked one on another, the second conductive layer is including a plurality of conductive elements which are arrayed periodically and independently o... | 04/24/2007 |
| 7209873 | Method of analyzing and computing anisotropic turbulent flows A general, closed, anisotropic kinetic turbulence theory for gases and liquids is based on new solutions of the Maxwell moment equations of the Boltzmann equations. These solutions provide a closed initial equation set for the four time average fluid mechanic variab... | 04/24/2007 |
| 7202807 | Dynamic antenna A method and an antenna arrangement are disclosed for reducing the antenna radar cross section for an externally illuminating radar source. A radar pulse is transmitted with the antenna arrangement fully matched to achieve a lowest possible power loss of the pulse. ... | 04/10/2007 |
| 7197800 | Method of making a high impedance surface A high impedance surface and a method of making same. The surface includes a molded structure having a repeating pattern of holes therein and a repeating pattern of sidewall surfaces, the holes penetrating the structure between first and second major surfaces thereo... | 04/03/2007 |
| 7165504 | Antenna linear extension and retraction apparatus for a submersible device, and method of use An antenna linear extension and retraction apparatus and method of use for a submersible device is provided. The apparatus includes a body having a cavity formed at an external surface. A bladder containing a core material is arranged within the cavity. The core mat... | 01/23/2007 |
| 7154429 | Device for protecting military vehicles from infrared guided munitions A heat seeking missile decoy device mounted on a military vehicle to change the infrared signature of the military vehicle. The device is at ambient temperature when stored on the military vehicle. When a heat seeking missile is fired at the military vehicle, the de... | 12/26/2006 |
| 7138958 | Reflector antenna radome with backlobe suppressor ring and method of manufacturing A radome adapted to reduce backlobes of an associated reflector antenna via application of a conductive ring with an inward facing edge about the periphery of the radome. The conductive ring may be applied extending around the radome periphery to an inside and or ou... | 11/21/2006 |
| 7121215 | Security device for transporting and/or storing paper items of value A security device for transporting and/or storing paper items of value includes an enclosed area (1) for receiving the items of value. The enclosed area is associated with at least one reservoir (3) for an irreversible paper destruction product (4 | 10/17/2006 |
| 7095627 | Frequency-selective shield structure and electric device having the structure A shield structure that transmits a radio wave in a specific frequency band and that exhibits a high shield characteristic in other bands. An opening portion having a specific shape and a specific perimeter length is formed on a conductor. A filter having a specific... | 08/22/2006 |
| 7071889 | Low frequency enhanced frequency selective surface technology and applications DC inductive FSS technology is a printed slow wave structure usable for reduced size resonators in antenna and filter applications of wireless applications. It is a dispersive surface defined in terms of its parallel LC equivalent circuit that enhances the inductanc... | 07/04/2006 |
| 7053812 | Recoverable pod for self-protection of aircraft and method of protecting an aircraft using a recoverable pod In a countermeasure system for an aircraft, a countermeasure module includes a chamber. Countermeasure equipment is housed in the chamber of the countermeasure module. An attachment mechanism allows for releasable attachment of the countermeasure module to an aircra... | 05/30/2006 |
| 6980151 | System and method for onboard detection of ballistic threats to aircraft A bi-static continuous wave radar system and related methods for detecting incoming threats from ballistic projectiles includes a remote source of RF illumination, and a local receiver installed in one or more target aircraft. A first receiving channel acquires dire... | 12/27/2005 |
| 6950021 | Electronic wall using high-resolution millimeter-wave radar in conjunction with multiple plane reflectors and retroreflectors An apparatus for detection of any intruder passing through an electronic wall is disclosed. The electronic wall is formed by a millimeter-wave radar positioned at one end of the wall and a plurality of combinations of plane reflectors and retroreflectors placed alon... | 09/27/2005 |
| 6927724 | Adaptive modification of surface properties to alter the perception of its underlying structure Adaptive modification of surface properties such as color, temperature and reflective properties by adjustably varying the temperature of a surface perceived by an observer, utilizing Peltier devices at the surface for temperature adjustment. ... | 08/09/2005 |
| 6906685 | Electromagnetic-field polarization twister An apparatus and method to twist the field polarization of an electromagnetic wave over a desired frequency band is described. In one embodiment, a transmission twister rotates the polarization of a linearly-polarized incident field to produce a transmitted field. I... | 06/14/2005 |
| 6882300 | Guide marker and visual guide marker device A guide marker includes a substrate and a radio-wave reflecting unit for reflecting radio waves at certain intensity in all directions in a virtual plane, including the incident direction of the radio waves, the radio-wave reflecting unit being provided in the surfa... | 04/19/2005 |
| 6876320 | Anti-radar space-filling and/or multilevel chaff dispersers The present invention consists of the particular geometry of the reflectors or dispersers which constitute the anti-radar chaff cloud. Instead of using conventional rectilinear forms, in the present invention multilevel and space-filling forms are introduced. Due to... | 04/05/2005 |
| 6864824 | Electromagnetic reflector The present invention provides an electromagnetic reflector comprising a deployable support frame carrying at least one sheet element designed to form a reflective surface when in the deployed state, wherein the support frame comprises a band that is suitable for be... | 03/08/2005 |
| 6795015 | Bottom reflector for a radar-based level gauge A bottom reflector for a radar-based level gauge, which measures a level of a liquid stored in a tank by means of transmitting a microwave signal towards the surface of the liquid from the top of the tank, receiving the microwave signal as reflected against the surf... | 09/21/2004 |
