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WO2003087904A9 |
A periodic structure is disclosed that includes an array of point defects within the periodic structure. The array includes point defects in a least two dimensions of the periodic structure. Each point defect permits electromagnetic fiel...
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WO/2004/013933A1 |
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 circui...
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WO/2004/010534A1 |
A multi-beam antenna (100, 128, 132, 136, 144) comprises an electromagnetic lens (102, 102.1), at least one first antenna feed element (104, 14), at least one second antenna feed element (106, 14), and a selective element (112) located b...
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WO/2004/008571A2 |
An antenna system includes a ground plane (80) and/or antenna elements (78A, 78B) forming an antenna array. A spatial filtering surface (82) is positioned adjacent the antenna array through which electromagnetic radiation to or from the ...
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WO/2004/008575A1 |
A method and apparatus are disclosed for forming an image from millimetre waves. A field of view scanned using two geometrically orthogonal, intersecting copolarized fan beams (110, 120) to receive millimetre wave radiation. The received...
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WO/2004/008570A2 |
A spatial filtering surface (210) includes a dielectric substrate (54) and a plurality of spaced, resonant dipole elements (21) positioned on the dielectric substrate (54). Each dipole element has dipole ends and an associated diode (216...
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WO/2004/004070A1 |
An antenna device having an improved directional gain. The antenna device comprises an antenna having a bi-directional radiation pattern and a reflective plate adapted to reflect the radiation power in one direction of the antenna and su...
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WO/2003/107484A1 |
A multi-band artificial magnetic conductor, AMC (500), is described in an electrically small antenna for use in handheld wireless devices and base station antenna applications. The multi-band AMC (500) contains a ground plane (502), two ...
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WO/2003/103361A1 |
A combined antenna and electromagnetic shield include a dielectric body (208) mountable to a printed circuit board (202), an antenna metallization (210) disposed on a first side of the dielectric body and shield metallization (206) for s...
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WO/2003/098323A1 |
An apparatus for redirecting radiation includes a polarisation dependent reflector and an optical component able to transform the polarisation of radiation as it passes through the component. Radiation having a first polarisation compone...
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WO/2003/096479A1 |
Dielectric lenses (6) having outside dimensions of about 0.5 to 1.5 wavelengths are arranged in front of the slots (3) of a waveguide slot array antenna (1). The dielectric lenses (6) constitute a panel structure in which they are couple...
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WO/2003/090314A1 |
Disclosed is a leaky-wave dual polarized slot type antenna, including: first and second feeding circuit sections comprised of N-first strip lines and N-second strip lines with a loop every first period along the X-axis on the first diele...
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WO/2003/090384A1 |
The present invention relates to arrangement (10, 20, 30, 40, 50, 60, 70) for transmitting and/or receiving electromagnetic signal, said arrangement comprising a sealable housing (21, 31, 41, 51, 61, 70a, 70b), at least one reflective su...
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WO/2003/088419A1 |
A periodic electromagnetic medium is disclosed that includes a surface that provides an interface with an ambient medium and a periodic structure that provides negative refraction within the medium of an incident electromagnetic field in...
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WO2003038947A9 |
The present invention relates to planar materials having bandgap properties. The materials are formed by depositing conductive fractal patterns (Figs. 1A, 1B) on a non-conducting substrate. The bandgap locations(s) are defined by paramet...
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WO/2003/083409A1 |
A measurement system is provided that facilitates the measuring of a shape of a flexible electromagnetic radiation structure. The measurement system includes a plurality of local sensors, a central sensor and a measurement processor. Eac...
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WO/2003/083410A1 |
A control system is provided for controlling the shape of a flexible electromagnetic radiation structure. The control system includes a plurality of actuators and a plurality of computational elements. Each of the plurality of actuators ...
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WO/2003/075397A1 |
A space deployable antenna that includes an inflatable envelope, a cylindrical reflector formed on a wall of the envelope, a catenary support frame for maintaining the cylindrical shape of the cylindrical reflector, and a feed array supp...
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WO/2003/075035A1 |
In a position detecting system for monitoring a suspicious person and giving an alarm using a radar transmitting&sol receiving a microwave or a millimetric wave, detectable region by the radar does not always match a region to be monitor...
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WO/2003/075406A1 |
A flat antenna for receiving digital or analogue broadcasts from a satellite, comprising at least one layer of individual receiver elements, the elements in the layer being interconnected by means of conductive paths in such a manner tha...
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WO/2003/073125A1 |
The invention relates to a radar sensor for motor vehicles, comprising a transceiver (16, 20, 22), whose directivity pattern comprises several lobes (28, 30), at least one (28) of which is directed parallel to the surface (12) of the car...
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WO/2003/067705A1 |
In a planar inverted F antenna (PIFA) (200), the feed (206)and RF grounding (208) connections are reversed yielding improved performance. Relative positioning of these connections is selected to tailor the characteristics of the antenna,...
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WO/2003/063292A1 |
A direct current inductive shorted patch antenna (Fig. 2) includes a direct current inductive frequency selective surface (Fig. 1) forming the radiating element (306), a ground plane (202), a feed (314), and a radio frequency (316) short...
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WO/2003/063288A1 |
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 p...
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WO/2003/063294A1 |
An array (100) of radiating elements including a first set of antenna elements (102) in an array configuration and a second set of antenna elements (104) in an array configuration. The first set of antenna elements (102) is positioned be...
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WO/2003/060577A1 |
An optically transparent dielectric reflector (200) that reflects an incident millimeter−wave beam at a design frequency. The reflector (200) includes layers of different optically transparent dielectric materials. The thickness of the...
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WO/2003/061071A1 |
A reflecting mirror support structure comprising at least one reflecting mirror panel, a support base block for finally supporting the reflecting mirror panel, and at least one reflecting mirror support member. The reflecting mirror supp...
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WO/2003/058761A1 |
The apparatus for detecting electromagnetic radiation (300), in particular for radio astronomic applications, comprises a receiving element (10), and a plurality of reflecting elements (20) forming a surface (30), capable of receiving th...
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WO/2003/058760A1 |
An antenna system includes a feedhorn (12) main reflector,(16) sub-reflector, and frequency selective member (24). The sub-reflector (20) includes an axially symmetrical reflecting surface (22) The frequency selective member(24) includes...
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WO/2003/056659A1 |
The invention concerns a monolithic phase-shifting panel with polycrystalline silicon PIN diodes, integrated in a dielectric substrate, for electronic scanning antenna. The invention is characterized in that the incorporation of diode-ty...
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WO/2003/052870A1 |
A slider system (1300) have been developed to aid in the spacing between read/write heads (1320) and the storage medium (1310), and a grating antenna amplifier (1110) has been developed to improve illumination spot size and polarization ...
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WO/2003/051554A1 |
Curved surfaces, particularly reflectors such as concave mirror elements for use in astronomical telescopes, solar energy concentrators etc., and methods of forming such surfaces. A rigid body with a curved surface is formed by providing...
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WO/2003/050914A1 |
An antenna (206, 306) consisting of a thin strip bent-wire monopole disposed on an artificial magnetic conductor 'AMC' (200, 300) is loaded at the end opposite to the feed (214) point with a distributed or lumped capacitance (204, 304) t...
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WO/2003/050912A1 |
The present invention relates to a method and apparatus for obtaining measurements of induced resistivity of objects from confined spaces such as within the confined space of a down-hole hydrocarbon production well. It is well known that...
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WO/2003/049227A1 |
An antenna with conductor elements (12) disposed in a matrix form consisting of lines and columns on a dielectric board (1) backed with a ground conductor plate (14). An individual conductor element (12) has a size insufficient to functi...
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WO2002011239A9 |
A multiple band reconfigurable reflecting antenna array and method for mulitple band operationand beam steering. An array of dipole antennas is disposed on a multiple band high impedancesurface. The antenna array is reconfigured by chang...
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WO/2003/047030A1 |
A frequency selective surface includes a pattern of electromagnetic material (110) formed on a substrate (100) suspendable over a ground plane (105) for reflecting or transmitting electromagnetic waves at one or more particular frequenci...
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WO/2003/044898A1 |
A parabolic reflector (20) for an antenna has a plurality (N) of concentric annular sections (20a-20e) arranged in series from a first annular section (20a) nearest a central axis (40) of the reflector to a last annular section (20e, 30e...
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WO/2003/041295A1 |
The invention relates to a radio frequency transmission device comprising a transmitting antenna (1) and a receiving antenna (4). The inventive device is characterised in that it comprises one or more passive resonant circuits (5) which ...
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WO/2003/041223A1 |
There is disclosed a filter device for electromagnetic radiation which is tunable across a wide range of the e-m spectrum, eg 30 GHz to 100 THz. According to the invention the filter device comprises at least two layers of material; the ...
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WO2003005783A9 |
Methods and systems are provided for embedding electrical components (210, 220) within a device including a frequency responsive structures (200), such as an antenna or a frequency selective surface. Electrical components are selected an...
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WO/2003/041214A1 |
The module (8) comprises an input&sol output access point (10) at a first end of a waveguide with a square cross section, called a square waveguide, two access points (11A, 11B) made of waveguides with a rectangular cross section, called...
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WO/2003/036758A1 |
A method of making a frequency selective surface in an electromagnetic energy attenuating coating having an electrical resistance, including the steps of defining a first marking field and a first marking tolerance; defining a second mar...
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WO/2003/034538A1 |
A novel loaded antenna is defined in the present invention. The radiating element of the loaded antenna consists of two different parts: a conducting surface and a loading structure. By means of this configuration, the antenna provides a...
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WO/2003/034543A1 |
A reflector antenna system having a diplexer for providing isolation between transmitted and received signals, which eliminates the need for a diplexer to be inserted into the waveguide or coax transmission line coupling the antenna syst...
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WO/2003/032438A1 |
A microstructured material consists of an array of Swiss roll resonant elements having capacitance and inductance such that the structure exhibits a predetermined magnetic permeability at r.f. frequencies, wherein at least one of the elo...
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WO/2003/030303A1 |
A small−sized and lightweight radio wave lens antenna apparatus which has a high degree of freedom to select installation sites, compactly installed on wall faces, and mitigated in installation restrictions in space. A semispherical Lu...
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WO/2003/030298A1 |
A magnetic interface generator (400) generates a magnetic interface (410) at a center frequency f¿0?. The magnetic interface generator (400) is a passive array of spirals that are deposited on a substrate surface. The magnetic interface...
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WO/2003/028157A1 |
The invention concerns a broadband or multiband antenna for microwaves, comprising a reflector plane (R) and at least a radiating element (ER) arranged proximate to the reflector plane (R). A assembly of photonic forbidden band material ...
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WO2002097917B1 |
An inflatable, multifunction, multipurpose, parabolic reflector apparatus having a plurality of manufactured parabolic mirrors (14, 16) made from a pressure-deformable reflective covering of an inflatable ring (12) for focusing electroma...
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