"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?"
The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 7864128 | Method and apparatus for stacked waveguide horns using dual polarity feeds oriented in quadrature A method and apparatus for stacked waveguide horns using dual polarity feeds oriented in quadrature have been disclosed. ... | 01/04/2011 |
| 7423603 | Method and apparatus for stacked waveguide horns using dual polarity feeds oriented in quadrature A method and apparatus for stacked waveguide horns using dual polarity feeds oriented in quadrature have been disclosed. ... | 09/09/2008 |
| 7408521 | Low profile bicone antenna An antenna that includes, in at least one embodiment, first and second radiating elements each having a substantially conical radiating surface. Each radiating surface may be substantially linearly conical or nonlinearly conical. The radiating surfaces are substanti... | 08/05/2008 |
| 7339542 | Ultra-broadband antenna system combining an asymmetrical dipole and a biconical dipole to form a monopole An ultra-broadband antenna system is disclosed. The antenna system is a single tubular antenna structure comprising an asymmetrical dipole fed with a biconical dipole. The biconical dipole covers the high frequency spectrum, while the asymmetrical dipole covers inte... | 03/04/2008 |
| 7339529 | Wide band biconical antennas with an integrated matching system A biconical antenna includes an entry conic having an entry base opposite an entry vertex and a termination conic having a termination base opposite a termination vertex. The entry and termination conics share substantially the same axis and the entry vertex is adja... | 03/04/2008 |
| 7317420 | Low cost omni-directional antenna manufactured from conductive loaded resin-based materials Omni-directional antenna devices are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a base resi... | 01/08/2008 |
| 7286095 | Inverted feed discone antenna and related methods The discone antenna includes a conical antenna element, having an apex, and a disc antenna element adjacent the apex of the conical antenna element. An inverted antenna feed structure, such as a flanged coaxial connector or coaxial cable, is connected to the disc an... | 10/23/2007 |
| 7239284 | Method and apparatus for stacked waveguide horns using dual polarity feeds oriented in quadrature A method and apparatus for stacked waveguide horns using dual polarity feeds oriented in quadrature have been disclosed. ... | 07/03/2007 |
| 7190318 | Wide-band fractal antenna An apparatus includes a discone antenna including a cone-shaped element whose physical shape is at least partially defined by at least one pleat. ... | 03/13/2007 |
| 7170461 | Conical dipole antenna and associated methods The dipole antenna includes a first antenna element assembly and a second antenna element assembly arranged in a dipole antenna configuration. The first antenna element assembly has one or more conical antenna elements, and the second antenna element assembly has a ... | 01/30/2007 |
| 7167137 | Collapsible wide band width discone antenna A collapsible discone antenna is provided with an ultra wide band width by providing a collapsible conical skeleton cone, with the rods of the skeleton being provided with meander lines so as to effectively reduce the overall dimensions of the antenna by a factor of... | 01/23/2007 |
| 7142166 | Wide band biconical antennas with an integrated matching system A biconical antenna; an entry conic having an entry base opposite an entry vertex and a termination conic having a termination base opposite a termination vertex. The entry and termination conics share substantially the same axis and the entry vertex is adjacent the... | 11/28/2006 |
| 7095379 | Radio frequency component and method of making same An electrical component and a method of constructing it are disclosed. The component includes a hollow tubular structure. The structure includes a series of axially spaced apart rings and at least one outer perimeter housing member. The housing member interconnects ... | 08/22/2006 |
| 6995728 | Dual ridge horn antenna The present invention provides apparatus and methods for a ridge horn antenna that exhibits improved directivity and main lobe of the radiation pattern at the high end of the frequency range for which its gain remains usably high, while providing a relatively low VS... | 02/07/2006 |
| 6980168 | Ultra-wideband antenna with wave driver and beam shaper An antenna comprises an antenna feed line having first and second conductors. It also comprises an antenna driver section having a pair of opposing cones. Each of the cones has an apex region and the cones are arranged so that the apex regions are spaced apart and a... | 12/27/2005 |
| 6967626 | Collapsible wide band width discone antenna A collapsible discone antenna is provided with an ultra wide band width by providing a collapsible conical skeleton cone, with the rods of the skeleton being provided with meander lines so as to effectively reduce the overall dimensions of the antenna by a factor of... | 11/22/2005 |
| 6943747 | Small and omni-directional biconical antenna for wireless communications A biconical antenna for wireless communications includes a conical upper conductive body and a conical lower conductive body having a common apex, which is used as a power feed point, wherein a space between the conical upper and lower conductive bodies is filled wi... | 09/13/2005 |
| 6864849 | Method and apparatus for creating an EH antenna An antenna system for transmitting and receiving, in association with a radio device that develops an H-field and an E-field corresponding to a radio frequency power signal having a voltage and a current, the voltage having a phase relationship to the current. The a... | 03/08/2005 |
| 6809697 | Dual-frequency broadband antennas A dual-frequency broadband antenna mainly comprises a dipole antenna set and an inductive shield, in which a positive and a negative pole are substantially two cup-like tubular hollow poles spaced out from a distance apart equal to ¼λ of a high frequency band appr... | 10/26/2004 |
| 6667721 | Compact broad band antenna A broad band antenna uses a bicone antenna configuration as a feed transformer and exponentially tapered reflector fins to radiate the antenna's energy. The bicone antenna design is used to match the antenna's impedance to coaxial cable impedance. The fin... | 12/23/2003 |
| 6608598 | Tuning circuit for edge-loaded nested resonant radiators that provides switching among several wide frequency bands An improved tuning method is used in conjunction with a set of nested electrically conducting cones to increase the frequency band over which the resulting radiating system functions as an electrically small antenna with controlled variation in input impe... | 08/19/2003 |
| 6593892 | Collinear coaxial slot-fed-biconical array antenna The present invention comprises a substantially omnidirectional antenna with minimal gain variation over the 360 degree azimuth. A plurality of biconical antenna elements are stacked, wherein a feed line passes through the center of the biconical antenna ... | 07/15/2003 |
| 6337664 | Tuning circuit for edge-loaded nested resonant radiators that provides switching among several wide frequency bands An improved tuning method is used in conjunction with a set of nested electrically conducting cones to increase the frequency band over which the resulting radiating system functions as an electrically small antenna with controlled variation in input impe... | 01/08/2002 |
| 6335707 | Electronic circuit structure with optimized space requirement according to available volume To make optimum use of an available volume exhibiting in particular surfaces of small radius of curvature, with a view to housing electronic circuits therein, a stack (11) of layers of possibly different compositions (circuits, components, insulants, etc.... | 01/01/2002 |
| 6198456 | Integrated transmitter or receiver device The present invention relates to a transmission or reception device. The device comprises several layers having openings such that the stack thereof produces one or more antennas. Microwave circuits are implanted on internal layers.... | 03/06/2001 |
| 6163307 | Multilayered helical antenna for mobile telecommunication units A multilayered helical antenna for mobile communication units includes a first dielectric sheet, a plurality of second dielectric sheets, a plurality of second and third dielectric sheets. All of the second dielectric sheets, except one, have a starting h... | 12/19/2000 |
| 5767814 | Mast mounted omnidirectional phase/phase direction-finding antenna system A direction finding antenna system includes a plurality of monopole elements disposed symmetrically around a center of a circular ground plane at the same radial distance from the center and a multimode combiner connected to the monopole elements to provi... | 06/16/1998 |
| 5534880 | Stacked biconical omnidirectional antenna An omnidirectional antenna with minimal gain variation over the 360° azimuth. A plurality of biconical antennas are stacked vertically. A radome covering the antenna and cylindrically encasing the antenna supports the stack of biconical antennas. A bundl... | 07/09/1996 |
| 5495262 | Molded plastic microwave antenna A microwave radar antenna that substantially comprises molded or extruded thermoplastic components that are assembled into completed assemblies, are then metallized by either electroless copper or are electroplated with copper to achieve RF conductivity. ... | 02/27/1996 |
| 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 |
| 5019832 | Nested-cone transformer antenna A plurality of conical transmission lines are concentrically nested to form n output antenna for pulsed-power, radio-frequency, and microwave sources. The diverging conical conductors enable a high power input density across a bulk dielectric to be reduced... | 05/28/1991 |
| 4477812 | Signal acquisition and tracking system Microprocessor controlled electronically scanned collinear array receiver stem includes a dipole antenna mounted atop the array to provide complete scan coverage from horizon to horizon. The microprocessor controls the scan angle and the frequency range t... | 10/16/1984 |
| 4225869 | Multislot bicone antenna A compact multi-cone antenna is disclosed wherein quarter wavelength cones re utilized at each slot of a slotted ring antenna. The cones are selected to be quarter wavelength in order to provide an impedance transformation for better impedance matching wit... | 09/30/1980 |
| 4181910 | Portable radar-detecting receiver A hand-carried and self-contained receiver and indicator for producing a signal when the presence of pulsed (or pulsed doppler) radar operation is detected, either in a broad band containing all the common radar pulse frequencies, or in a limited band whe... | 01/01/1980 |
| 3978797 | Radiometric target detection device A radiometer is mounted in a guided missile for detecting electro-magnetic hermal power in the microwave region of the spectrum radiated from an area of suspected targets with circuitry coupled thereto to respond to a predetermined change in level of radia... | 09/07/1976 |