Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7855689 | Antenna apparatus for radio communication An antenna apparatus has a ground plane and a traveling-wave linear antenna The ground plane has a dielectric layer and metallic plates disposed on the dielectric layer. The plates placed on a front side of the ground plane act as a band gap surface. The dielectric ... | 12/21/2010 |
| 7532171 | Millimeter wave electronically scanned antenna A millimeter wave electronically scanned antenna is disclosed in both passive and active implementations. The antenna comprises a plurality of antenna components, wherein an antenna component, includes a coupler; a ground plane; a traveling wave phase shift line ele... | 05/12/2009 |
| 7439863 | RFID relay antenna, RFID system, container, disposition method, communication confirmation method, and package construction In an RFID system including an RFID tag and an RFID reader for performing wireless communications with the RFID tag, an RFID relay antenna has a first loop antenna for electromagnetic induction coupling with an antenna at the RFID tag, a second loop antenna that is ... | 10/21/2008 |
| 7394428 | Single pole printed antenna A printed antenna includes a smaller antenna member attached onto the circuit board, one or more greater antenna members attached onto the circuit board and electrically coupled to the smaller antenna member with conductive coupling members and coupled in series wit... | 07/01/2008 |
| 7348933 | Compact multi-polarized antenna for portable devices A compact multi-polarized antenna for transmitting and/or receiving radio frequency (RF) signals, and a method for constructing same, is disclosed. The antenna comprises at least two radiative antenna elements each having a first end and a second end. The second end... | 03/25/2008 |
| 7239287 | Wireless communication device having conductive elements antenna An antenna coupled to a wireless communication device that is comprised of a series of conductive elements that form a conductor when placed under a force. The conductor is coupled to a wireless communication device to provide an antenna so that the wireless communi... | 07/03/2007 |
| 7190319 | Wave antenna wireless communication device and method A wireless communication device coupled to a wave antenna that provides greater increased durability and impedance matching. The wave antenna may be in the form of a polygonal, elliptical curve and/or coil shape. The wireless communication device is coupled to the w... | 03/13/2007 |
| 7161548 | Wireless communication apparatus A wireless communication apparatus having a metal housing is provided, in which an outside antenna is not required and a small antenna the sensitivity of which does not decrease is included. A slit 1 is provided on a metal housing 5 of a wireles... | 01/09/2007 |
| 7126552 | Device for transmission of electromagnetic radiation through a wall Device for transmission of electromagnetic radiation through a wall. In order to couple transmission-reception means (2, 4) located on each side of the wall (6), this device comprises two antennas (12, 14) placed on each side of this wall... | 10/24/2006 |
| 7084822 | Dual feed common radiator antenna system and method for broadcasting analog and digital signals A system and method is provided for transmitting analog and digital signals using a single traveling wave structure with radiators attached thereto, to form broadside radiation of the digital and analog signals. ... | 08/01/2006 |
| 7050017 | RFID tire belt antenna system and method The invention relates to a RFID chip that is contained inside a rubber tire to provide wireless communication of information concerning the tire. For instance, it may be desirable to communicate pressure and temperature information concerning a tire during its manuf... | 05/23/2006 |
| 7015802 | Vehicle tag reader A remote communication device, such as a radio frequency type device, that receives temperature indicia concerning a container and/or its contents and communicates such temperature indicia along with an identification indicia to a reader. The remote communication de... | 03/21/2006 |
| 6972648 | Broadband coaxial transmission line using uniformly distributed uniform mismatches A coaxial transmission line having intermediary segments of equal lengths and equidistant insulator supports is provided. The transmission line segment and insulator support spacing is designed to cause any reflection artifacts to occur outside or between desired ch... | 12/06/2005 |
| 6967629 | Low profile antenna A low profile antenna having relatively high radiation resistance, wide bandwidth and which utilizes a single conductor and RF source is disclosed. In accordance with an exemplary embodiment, the upper horizontal portion and the lower horizontal portion of the doubl... | 11/22/2005 |
| 6903704 | Wave antenna wireless communication device and method A wireless communication device coupled to a wave antenna that provides greater increased durability and impedance matching. The wave antenna is a conductor that is curved in alternating sections. The wireless communication device is coupled to the wave antenna to p... | 06/07/2005 |
| 6515628 | Dual polarization patch antenna A dual polarization patch antenna comprising a patch, first and second pairs of orthogonally disposed probes feeding said patch, and a first feed network for feeding said first pair of probes from a first feed point. The first feed network comprises a fir... | 02/04/2003 |
| 6509873 | Circularly polarized wideband and traveling-wave microstrip antenna The present invention is an antenna comprising a microstrip having upper and lower layers for producing leaky wave radiation. Circularly shaped patches are located on the two layers for circularly polarizing the leaky wave radiation. The present invention... | 01/21/2003 |
| 6094172 | High performance traveling wave antenna for microwave and millimeter wave applications A traveling array antenna which operates at microwave/millimeter frequencies is disclosed in which a like number of radiator elements are arranged in two mirror image branches, an RF signal feed is fed through a 180 degree compensating power splitter to e... | 07/25/2000 |
| 6087778 | Scalable helicon wave plasma processing device with a non-cylindrical source chamber having a serpentine antenna A plasma processing device (25) including a vacuum chamber (27) for processing a substrate (29) and a source chamber (26) for generating a plasma is disclosed where the source chamber (26) has a non-cylindrical geometry. Helicon waves of plasma are propag... | 07/11/2000 |
| 6016127 | Traveling wave antenna A flat strip-like radiator is angled along the width of the strip to form radiating arms of predetermined length and angles to radiate a design radiation patter. The flat strip is secured to a ground plane such that the flat strip is perpendicular to the ... | 01/18/2000 |
| 5923295 | Circular polarization microstrip line antenna power supply and receiver loading the microstrip line antenna A circular polarization microstrip line antenna transmits and receives right-handed and left-handed circularly polarized waves by one microstrip line antenna. A dielectric sheet 3 is laid on a metal base 4, and a flexible film 2 is laid on the dielectric ... | 07/13/1999 |
| 5644321 | Multi-element antenna with tapered resistive loading in each element An antenna having efficient operation over a wide bandwidth, a low standing wave ratio and constant radiation characteristics over a wide bandwidth includes in one embodiment a set of four linear elements of substantially the same length. Each linear elem... | 07/01/1997 |
| 5608415 | High-frequency signal transmission system with conical conductors and bias resistor A high-frequency signal transmission system for use as a microwave antenna or filter has a plurality of cascaded conical or planar inner conductors each having a unitary exponential gradient, a pair of circular lines or impedance-matching lines having ide... | 03/04/1997 |
| 5469179 | Parametrically amplifying traveling-wave antenna A parametrically amplifying traveling-wave antenna utilizing parametric amplification by strong coupling or resonance between an induced wave and an incident sky wave, the antenna including a base-plate or ground having electrical constants satisfying the... | 11/21/1995 |
| 5380386 | Molded metallized plastic microwave components and processes for manufacture A method of fabricating a microwave waveguide component wherein a plurality of joinable thermoplastic members are first formed. The members, when joined, comprise a microwave waveguide component having an internal surface that is adapted to be plated. The... | 01/10/1995 |
| 5367307 | Microwave plate antenna printed on a substrate The present invention relates to a micro-wave plate antenna, especially for Doppler radar for example, of the type with a Janus configuration, made up of a plurality of linear sub-networks parallel among themselves, or of a single linear sub-network, each... | 11/22/1994 |
| 5210541 | Microstrip patch antenna arrays A patch antenna array having multiple beam-forming capability is formed as a feed network (15) on a lower microstrip substrate with patches (13) overlaying these on an upper substrate. The patch array consists of a number of linear series-connected patch ... | 05/11/1993 |
| 5144327 | Source of microwave radiation for an electronic sweeping antenna which absorbs reflected energy Disclosed is a source of microwave radiation, namely a source enabling the absorption of multiple reflections for the illuminating of a lens in order to form an electronic sweeping antenna. The source includes a layered arrangement of elementary illuminat... | 09/01/1992 |
| 5140336 | Non-resonant antenna for wind profilers An antenna system particularly suited for wind profiling produces a radio beam which can be oriented in each of four directions and optionally in a fifth, vertical direction and four intermediate directions. The antenna has a single array of strings of co... | 08/18/1992 |
| 5087921 | Array beam position control using compound slots A waveguide slotted array is disclosed, employing compound slots in a waveguide broad wall. The phase of the voltage excited in the slot is controlled by the slot offset and angle of inclination relative to the axis. Utilization of the additional phase co... | 02/11/1992 |
| 5006861 | Antenna An antenna comprises a conductive helix (10) positioned parallel to a ground plane (12). One end (14) of the helix is coupled to the ground plane (12), while the other end (16) is left open. Radio frequency signals (20) are fed (18) into the open end of t... | 04/09/1991 |
| 5006858 | Microstrip line antenna with crank-shaped elements and resonant waveguide elements A microstrip line antenna generally used for receiving an electric wave from an artificial satellite, which comprises a plane dielectric substrate and a plurality of crank-shaped microstrip lines arranged on the substrate. The improvement comprises a numb... | 04/09/1991 |
| 4963892 | Microwave plane antenna with two arrays which have beams aligned in the same direction A microwave plane antenna including rows comprising pairs of parallel conductive line antenna elements configured as a pair of out-of-phase square waves and a signal feed circuit of strip lines arranged as a corporate feed network. The respective conducti... | 10/16/1990 |
| 4529988 | Travelling wave antenna with side lobe elimination The arrangement is for cancelling unwanted sidelobes in travelling-wave arrays, especially the back lobe where the main beam approaches the end-fire direction; the array should have high symmetry, i.e., with the usual form of array (radiators spaced along... | 07/16/1985 |
| 4459593 | Stripline antennas Stripline antenna arrays of the type in which the strip turns through successive right-angle corners to form successive four-cornered cells, the lengths of the longitudinal and tranverse strip sections being such that the summed radiation in each cell has... | 07/10/1984 |
| 4459594 | Stripline antennas In a prior form of stripline antenna, the strip turns through successive right-angle corners to form successive multi-cornered cells in which the lengths of the longitudinal and transverse strip sections are such that the summed radiation from each cell r... | 07/10/1984 |
| 4293858 | Polarization agile meander line array A polarization-agile radar array employing at least one linear array having a periodic first meander line and a second meander line which is a close-spaced, mirror image of the first such line, these lines being separately driven so that when they are fed... | 10/06/1981 |
| 4220956 | Collinear series-fed radio frequency antenna array A collinear series-fed antenna array formed from two spaced-apart electrical conductors extending parallel to one another in a longitudinal direction and having regularly spaced complementary changes in transverse dimensions along the longitudinal directi... | 09/02/1980 |
| 4021810 | Travelling wave meander conductor antenna A travelling wave conductor antenna including a ground plane. The antenna consists of meander-structure conductors made of a conductive material, zigzagging at right angles or at almost right angles. The conductors are placed above an even or deformed gro... | 05/03/1977 |
