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| Number | Title | Issue Date |
| 8164542 | Antenna using a PBG (photonic band gap) material, and system and method using this antenna An antenna uses a photonic forbidden band (PFB) material in which, by default, a surface (26) for injecting and/or receiving electromagnetic waves in a resonance cavity of the antenna (8) has at least a width or a length of a diameter higher than or eq... | 04/24/2012 |
| 8159413 | Double-stacked EBG structure In a double-stacked electromagnetic bandgap (EBG) structure, a first conductive plane and a second conductive plane are spaced apart in parallel. At least two EBG layers are embedded in parallel between the first conductive plane and the second conductive plane. The... | 04/17/2012 |
| 8149180 | Antenna with resonator having a filtering coating and system including such antenna The invention relates to an antenna for transmitting or receiving electromagnetic waves at a working frequency fT, that comprises a resonator with a filtering (49) coating that covers the major portion of the upper face of a reflector (22) l... | 04/03/2012 |
| 8130171 | Lens for scanning angle enhancement of phased array antennas A method and apparatus for a negative index metamaterial lens. The method is used for creating a negative index metamaterial lens for use with a phased array antenna. A design is created for the negative index materials lens that is capable of bending a beam generat... | 03/06/2012 |
| 8120546 | Indefinite materials A compensating multi layer material includes two compensating layers adjacent to one another. A multi-layer embodiment of the invention produces sub-wavelength near-field focusing, but mitigates the thickness and loss limitations of the isotropic “perfect lens.”... | 02/21/2012 |
| 8106851 | Variable metamaterial apparatus Artificial materials, such as metamaterials, include adjustable properties. In some approaches the properties are adjustable according to active feedback of interaction with electromagnetic waves. ... | 01/31/2012 |
| 8106850 | Adaptive spectral surface In various embodiments, an adaptive spectral surface is provided including an upper layer having a frequency selective surface, a lower layer being at least partially reflective, and an active dielectric material layer therebetween. The active dielectric material ma... | 01/31/2012 |
| 8098213 | Frequency selective surface structure for filtering of single frequency band There is provided provided a frequency selective surface (FSS) structure for filtering a single frequency band, including: a plurality of unit cells arranged at a predetermined distance, wherein each of the unit cells includes: a substrate; a circular loop formed on... | 01/17/2012 |
| 8004474 | Non-cutoff frequency selective surface ground plane antenna assembly Described is an apparatus and method for reducing noise in an information bearing signal is provided. A feeding element receives dual-polarized wideband electromagnetic signals. The feeding element is coupled to a Non-Cutoff Frequency Selective Surface ground plane.... | 08/23/2011 |
| 7982686 | Frequency selective surfaces A freestanding frequency selective surface (FSS) is provided which comprises at least one shorted resonance aperture element (12). The shorted resonance aperture element provides a sensitivity to polarization. The shorted resonance aperture element may compri... | 07/19/2011 |
| 7982687 | Ka/Ku outdoor unit configuration using a frequency selective surface Methods, systems, and apparatuses for receiving signals from communications satellites are disclosed. An antenna unit for receiving signals transmitted from a plurality of communications satellites at a plurality of orbital slots, in accordance with one or more embo... | 07/19/2011 |
| 7911407 | Method for designing artificial surface impedance structures characterized by an impedance tensor with complex components A method for designing artificial impedance surfaces is disclosed. The method involves matching impedance component values required for a given far-field radiation pattern (determined, for example, by holographic means) with measured or simulated impedance component... | 03/22/2011 |
| 7859482 | Frequency selective surface waveguide switch A waveguide switch is shown. The waveguide switch includes a frequency selective surface and a biasing diode configured to selectively provide a short between an outer metal loop and an inner metal loop to place the frequency selective surface into either a non-refl... | 12/28/2010 |
| 7834818 | Apparatus for attenuating reflections of electromagnetic waves, method for its manufacture and its use A device for attenuating reflections of an electromagnetic wave impinging thereon and a method of making the device. The device includes a structured film comprised of at least one of a ferromagnetic and ferrimagnetic material. The structured film has a structure an... | 11/16/2010 |
| 7821473 | Gradient index lens for microwave radiation A gradient index lens for microwave radiation. The lens includes a plurality of electric field coupled resonators wherein each resonator has a resonant frequency. The resonators are arranged in a planar array having spaced apart side edges and spaced apart top and b... | 10/26/2010 |
| 7696951 | Left-handed medium using no via A two-dimensional structure medium comprising a conductor pattern as unit cells formed on the upper surface of a substrate and a conductor pattern formed on the lower surface of the substrate and exhibiting a left-handed characteristic achieved without using a via b... | 04/13/2010 |
| 7688279 | Fractal structure, super structure of fractal structures, method for manufacturing the same and applications A three-dimensional fractal-structure body partially or entirely comprises a three-dimensional fractal structure, the fractal structure body having a local minimum value at a particular wavelength determined by structural and material factors of the fractal structur... | 03/30/2010 |
| 7683854 | Tunable impedance surface and method for fabricating a tunable impedance surface A tunable impedance surface includes a varactor. The varactor comprises a bottom electrode formed on a surface of a substrate. First and second ferroelectric elements are on top of the bottom electrode and electrically connected to one another through the bottom ele... | 03/23/2010 |
| 7679577 | Use of AMC materials in relation to antennas of a portable communication device A portable communication device comprises a first set of layers providing different circuits, and a second set of layers comprising an antenna layer including all antennas and a grounding layer for all antennas. The grounding layer comprises an AMC material structur... | 03/16/2010 |
| 7639206 | Low-profile frequency selective surface based device and methods of making the same A frequency selective surface-based (FSS-based) device (200) for processing electromagnetic waves providing at least a third-order response. The FSS-based device includes a first FSS (202), a second FSS (210), and a high quality factor (Q) FSS (... | 12/29/2009 |
| 7639207 | Antenna structures having adjustable radiation characteristics The radiation properties and wave guiding properties of frequency selective surfaces are used in conjunction with closely spaced antenna elements to fabricate antenna structures having adjustable radiation characteristics. The direction, magnitude, and polarization ... | 12/29/2009 |
| 7639205 | Radio wave shield A radio wave shield selectively shields radio waves of a specific frequency band. ... | 12/29/2009 |
| 7636070 | Configurable and orientable antenna and corresponding base station An antenna, permitting the configuration of at least one radioelectric wave beam of at least one fixed wavelength, of the type including at least one transmitting element, preferably of the passive type, arranged in a set of essentially parallel, wave-reflecting wir... | 12/22/2009 |
| 7623087 | High-impedance substrate, antenna device and mobile radio device There is provided with a high-impedance substrate including: a finite ground plane; a plurality of metal plates arranged at a predetermined height from the finite ground plane and in a matrix pattern such that respective faces thereof are approximately parallel to t... | 11/24/2009 |
| 7623088 | Multiple frequency reflect array There is disclosed a reflect array which may include a dielectric substrate having first and second surfaces. The second surface may support a conductive layer. A first array of conductive phasing elements and a second array of conductive phasing elements may be sup... | 11/24/2009 |
| 7548217 | Partially reflective surface antenna A partially reflect surface antenna includes a substrate, a reflective sheet and a plurality of supporting units. The substrate has an upper surface formed thereon a signal I/O for receiving and outputting high frequency signal. The reflective sheet partially reflec... | 06/16/2009 |
| 7528797 | Electrical connector with frequency-tuned groundplane An electrical connector with a frequency-tuned groundplane is disclosed. The connector includes a signal medium to communicate an electrical signal and a frequency-tuned groundplane medium to communicate a reference voltage (i.e., ground). The groundplane medium dif... | 05/05/2009 |
| 7522124 | Indefinite materials A compensating multi layer material includes two compensating layers adjacent to one another. A multi-layer embodiment of the invention produces subwavelength near-field focusing, but mitigates the thickness and loss limitations of the isotropic “perfect lens”. ... | 04/21/2009 |
| 7508353 | Exterior component disposed on front surface of radar device of vehicle An exterior vehicle component includes a proximity member disposed along an outer perimeter of an electromagnetic wave transmission member provided at a center of the component which is disposed in front of a radar device. The proximity member includes a chromium-pl... | 03/24/2009 |
| 7492329 | Composite material with chirped resonant cells A composite material comprising a dielectric material and a plurality of non-overlapping local resonant cell groups disposed across the dielectric material is described. Each local resonant cell group comprises a plurality of resonant cells that are small relative t... | 02/17/2009 |
| 7482994 | Three-dimensional H-fractal bandgap materials and antennas A three dimensional (3D) fractal structure with H as the mother element is hereby disclosed. Such a 3D structure can act as selective total microwave reflectors or selective microwave filters in transmission. When excited through current injection, such a 3D fractal... | 01/27/2009 |
| 7474273 | Gas plasma antenna A gas plasma antenna with a rigid, flexible, or semi-flexible substrate and an improved method of generating a uniform electron density. The antenna comprises a plasma display panel (PDP) containing a multiplicity of Plasma-shells, each Plasma-shell containing a gas... | 01/06/2009 |
| 7463213 | Antenna unit having a single antenna element and a periodic structure upper plate An antenna unit consists of an EBG reflector, a single curl antenna supported at a central portion of the EBG reflector, and a periodic structure upper plate disposed apart from a principal surface of the EBG reflector by a predetermined distance. The EBG reflector ... | 12/09/2008 |
| 7460084 | Radio frequency holographic transformer A three-dimensional holographic array of radio-frequency (RF) diffraction gratings, each of which has lengths of conductive and insulating fluid that are selected and adjusted to provide a desired diffraction effect on incident RF radiation. The three-dimensional ar... | 12/02/2008 |
| 7456803 | Large aperture rectenna based on planar lens structures A rectenna structure comprising a flexible, dielectric sheet of material; a plurality of metallic lenslets disposed on the sheet of material; and a plurality of diodes disposed on the sheet of material, each diode in said plurality of diodes being arranged at a focu... | 11/25/2008 |
| 7436373 | Portable receiver for radar detection Various embodiments are described relating to a portable antenna-equipped device for multi-band radar detection. The detection device includes a plurality of antennas on a flexible substrate, a detection-and-control circuit, an indicator and a power source. The ante... | 10/14/2008 |
| 7429961 | Method for fabricating antenna structures having adjustable radiation characteristics The radiation properties and wave guiding properties of frequency selective surfaces are used in conjunction with closely spaced antenna elements to fabricate antenna structures having adjustable radiation characteristics. The direction, magnitude, and polarization ... | 09/30/2008 |
| 7429962 | 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 ... | 09/30/2008 |
| 7423608 | High impedance electromagnetic surface and method A high impedance surface (300) has a printed circuit board (302) with a first surface (314) and a second surface (316), and a continuous electrically conductive plate (319) disposed on the second surface (316) of the printed... | 09/09/2008 |
| 7420524 | Pixelized frequency selective surfaces for reconfigurable artificial magnetically conducting ground planes A reconfigurable frequency selective surface (FSS) includes a plurality of conducting patches supported on the surface of a dielectric layer, with selectable electrical interconnections between the conducting patches so as to provide a desired characteristic. The re... | 09/02/2008 |
