Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7889147 | Modular active phased array A structural grid is provided with continuous and discontinuous beam members coupled by splices, a front structure coupled to the structural grid, the front structure including a walkway and cables, a radome coupled to the front structure. The structural grid is cou... | 02/15/2011 |
| 7443354 | Compliant, internally cooled antenna apparatus and method A phased array antenna system including a mandrel having compliant portions and an internally formed cooling passageway. The compliant portions are formed by removing portions of material along one end of the mandrel to form a plurality of pairs of generally U-shape... | 10/28/2008 |
| 7358917 | Frequency dispersive antenna suitable in particular for the pinpointing of objects over an angular domain greater than the natural width of the said antenna The invention relates to a frequency dispersive antenna. The antenna comprises at least one top part and one bottom part. The top part and the bottom part comprises radiating waveguides coupled electromagnetically by way of coupling slots to a feed waveguide. The fe... | 04/15/2008 |
| 7327702 | Variable radiation pattern radiocommunication base station The invention concerns a base station (100) comprising a transmission antenna (1) consisting of several radiating elements (2) for transmitting one or more radio signals (E1, E2, , EN) to one or more addressee te... | 02/05/2008 |
| 7313409 | Method and apparatus for transmit power control during beam switching A method and apparatus for transmit power control (TPC) while switching a beam among a plurality of beams in a wireless communication system. An antenna array generates a plurality of directional beams and preferably an omni-directional pattern and switches a beam a... | 12/25/2007 |
| 7295811 | Method for performing measurements for handoff of a mobile unit operating with a switched beam antenna in a wireless communication system, and corresponding system Measurements for handoff are made by a wireless transmit/receive unit (WTRU) operating with a switched beam antenna in a wireless communication system. The switched beam antenna is a smart antenna generating a plurality of directional beams and an omni-directional b... | 11/13/2007 |
| 7221922 | Switch circuit and composite high frequency elements A switch circuit for switching the connection of the receiving or transmitting circuits of two communication systems to an antenna circuit, which comprises first and second switch means having two switching elements, the first switch means comprising a first inducta... | 05/22/2007 |
| 7205956 | Structural waveguide formed in a leg of an antenna tower and method of use A communications tower, or other structure is provided with at least one waveguide defined in a structural support. The waveguide can be used to transmit signals up and down the communications tower thereby eliminating at least some cabling. ... | 04/17/2007 |
| 7190957 | Base station connection method, radio network controller, and mobile station A method for connecting the radio link between a mobile station and a base station is provided to improve quality of received signals at the base station and the mobile station. A radio network controller (RNC) monitors the difference between the reception power of ... | 03/13/2007 |
| 7107012 | Radio base station for wirelessly communicating with a radio terminal A radio antenna of a radio base station is a directional antenna. The antenna searches for a peripheral radio base station by changing the directivity of the antenna. An operating channel and electric field intensity of the other base station are acquired by the sea... | 09/12/2006 |
| 7075901 | Communication systems, communication apparatuses, radio frequency communication methods, methods of communicating using a radio frequency communication system, and methods of forming a radio frequency communication device The present invention provides communication devices, communication systems and methods of communicating. According to one embodiment of the invention, a communication device includes: a first antenna operable to receive wireless communication signals; a second ante... | 07/11/2006 |
| 7057571 | Split waveguide antenna An antenna concept for radiating intense, high power electromagnetic fields in the RF regime without electrical breakdown. The invention accomplishes this with high aperture and power efficiency, high gain, and in a geometry that is compact and conformal to a planar... | 06/06/2006 |
| 7058359 | LMDS system with equal power to subscriber locations A local multipoint distribution service system having an antenna (1) for transmitting a signal of reused frequency within a specified range from the antenna (1), the antenna (1) having multiple radiating antenna elements, each of the antenna ele... | 06/06/2006 |
| 7023392 | Fluid dielectric reflectarray An antenna can comprise a conductive reflecting surface (204) and a plurality of cells (202) disposed over the conductive reflecting surface. The plurality of cells can be formed from a solid dielectric material such as a low temperature cofired cerami... | 04/04/2006 |
| 6967543 | Microstrip-to-waveguide power combiner for radio frequency power combining A microstrip-to-waveguide power combiner includes a dielectric substrate and at least two microstrip transmission lines formed thereon in which radio frequency signals are transmitted. The microstrip transmission lines terminate in microstrip launchers or probes at ... | 11/22/2005 |
| 6930556 | Active-loop, spatially-combined amplifier A system for amplifying a signal is provided. The system includes a wave guide and an active loop amplifier disposed in the wave guide. The active loop amplifier receives the signal and generates a magnetic field in response to the signal, such as one that couples t... | 08/16/2005 |
| 6774845 | Single receiver wireless tracking system A configurable directional antenna includes a center antenna element, a plurality of second antenna elements, and a switch matrix. Each second antenna element, together with the center antenna element, defines an antenna sector. A first portion of the second antenna... | 08/10/2004 |
| 6434384 | Non-uniform multi-beam satellite communications system and method A satellite broadcast system and method, particularly useful for television signals, allows for local as well as nationwide broadcast service by allocating greater satellite resources to the more important local service areas. This is accomplished by broa... | 08/13/2002 |
| 6429823 | Horn reflect array In summary the present invention discloses a horn reflect array antenna system and a method for producing a signal using a horn reflect array antenna. The system comprises at least one reflective element illuminated by an incident radio frequency (RF) sig... | 08/06/2002 |
| 6404401 | Metamorphic parallel plate antenna The present invention provides a low-cost, steerable antenna formed with a dielectric medium separating a pair of conductive plates and a centrally located signal feed. Switches selectively interconnect the conductive plates through the dielectric medium ... | 06/11/2002 |
| 6236366 | Hermetically sealed semiconductor module composed of semiconductor integrated circuit and antenna element A semiconductor module having a built-in antenna element for use in a system of a band of millimeter-waves or quasi-millimeter-waves comprises a substrate, an antenna element, a semiconductor integrated circuit, and a hermetically sealing portion. The ant... | 05/22/2001 |
| 6198437 | Broadband patch/slot antenna A broadband microwave coplanar antenna suitable for use in singular antenna or antenna array dispositions in a plurality of military and other present day uses. The disclosed antenna combines desirable characteristic of the patch and slot antenna forms in... | 03/06/2001 |
| 5926147 | Planar antenna design An antenna design includes a plurality of radiating elements which radiate electro-magnetic energy, and feeders which feed the electromagnetic energy to the radiating elements. The feeders have a supply network substantially at the same level in the anten... | 07/20/1999 |
| 5488380 | Packaging architecture for phased arrays A dipole antenna is inserted into a waveguide to couple EM energy into and out of a waveguide. The dipole antenna is printed on a substrate of a module that contains electronic components. The substrate includes a coupled coplanar strip transmission line ... | 01/30/1996 |
| 5459474 | Active array antenna radar structure An active array antenna, which may be used for radar, includes antenna elements (antelements) supported in a two-dimensional array. The fronts of the elements are protected by a cover. In order to allow easy repair, each column of antelements is associate... | 10/17/1995 |
| 5404148 | Phased array antenna module An antenna having antenna modules for an extremely wideband active monopulse phased array system, the modules including a housing provided with four radiators of the rectangular open-ended waveguide type and with an electric circuit. With the antenna modu... | 04/04/1995 |
| 5359334 | X-scan aircraft location systems Linear array antenna systems are used in X-scan aircraft location systems and methods able to avoid disabling azimuth error conditions caused by multipath reflections under roll and pitch conditions during aircraft carrier landing operations. Aircraft azi... | 10/25/1994 |
| 5276455 | Packaging architecture for phased arrays A phased array antenna structure has a distribution network, and a composite of feed, module, and antenna honeycomb structures. The distribution network distributes or collects electromagnetic (EM) energy. The feed honeycomb structure is positioned adjace... | 01/04/1994 |
| 5198828 | Microwave radar antenna and method of manufacture An improved microwave radar antenna including a plurality of linear waveguides arranged in a two dimensional array with each linear waveguide having a mounting flange along the bottom narrow edge of the waveguide for attachment to the ground plane of the ... | 03/30/1993 |
| 5136304 | Electronically tunable phased array element An electronically tunable phased array antenna element compensates for the variation of input impedance as the scan angle of the array changes. A microstrip feed is used which allows monolithic microwave integrated circuits to easily be incorporated in th... | 08/04/1992 |
| 4937585 | Microwave circuit module, such as an antenna, and method of making same A microwave circuit module, more particularly an antenna, comprised of a polyethylene foam substrate having a loss tangent less 0.001 and a dielectric constant less than 1.3, a predetermined pattern of one or more elements, such as an array of n×m radiat... | 06/26/1990 |
| 4929955 | Circular waveguide amplitude commutator A circular waveguide section which is suitably excited with a TM01 and two spatially orthogonal TE11 modes to form a cosine-squared-on-a pedestal amplitude distribution at the outputs of the circular waveguide. The resulting cosine-s... | 05/29/1990 |
| 4928109 | Modulated scanning antenna A scanning antenna comprises a non-magnetic, electrically conductive radiation horn defining an antenna opening having a predetermined central line of focus, and at least one magnetically switchable conductive element such as a reed relay mounted to exten... | 05/22/1990 |
| 4868574 | Electronically scanned radar system An electronically scanned radar system has a serpentine antenna, with at least two ports. The antenna is physically rotated. Each port has a mixer, transmitter and local oscillator feeding signals to it, the signals of the transmitter and oscillator being... | 09/19/1989 |
| 4864315 | Phased array antenna testing arrangement An arrangement for testing the performance of an electronic system utilizing a phased array antenna as its principal radiator into a predetermined sector of space includes, as one of its main components, an enclosure which bounds a miniature anechoic cham... | 09/05/1989 |
| 4806944 | Switchable matching network for an element of a steerable antenna array The invention relates to a matching network which may be serially inserted in the path between a transmitter power amplifier and/or a receiver low noise amplifier and an element of a steerable array antenna to compensate for mismatching occurring when the... | 02/21/1989 |
| 4803495 | Radio frequency array antenna with energy resistive material An array antenna is provided wherein each adjacent pair of a plurality of antenna elements in such array antenna have a common, conductive wall having a castellated radiating edge. Radio frequency energy resistive material is disposed within slots formed ... | 02/07/1989 |
| 4797682 | Deterministic thinned aperture phased antenna array A phased array antenna (10) includes a plurality of radiating elements (14) arranged in concentric rings (11, 12) to form a deterministically thinned antenna aperture which facilitates heat removal from the array, while minimizing side lobe signals and th... | 01/10/1989 |
| 4788552 | Wave guide element for an electrically controlled radar antenna A waveguide element for an electrically controlled radar antenna comprises a non-resonant waveguide (V) fed from a feed opening (M). The feed opening divides the waveguide longitudinally into a first and a second part, each provided at its outer end with ... | 11/29/1988 |
| 4772893 | Switched steerable multiple beam antenna system A steerable multibeam five element cross-feed cluster antenna (16) system. The feed power is divided into five branches. Each branch includes a switching network (12A-12E) comprised of a plurality of time delay elements (90A; 92A) each individually contro... | 09/20/1988 |
