Did You Know...
...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7616164 | Optimized capacitive dipole antenna A capacitively coupled dipole antenna is coupled to a substrate such that a capacitative portion of the antenna spans a void in the substrate. ... | 11/10/2009 |
| 7443358 | Integrated filter in antenna-based detector An antenna system includes a dielectric structure formed on a substrate; an antenna, partially within the dielectric structure, and supported by the dielectric structure; a reflective surface formed on the substrate. A shield blocks radiation from a portion of the a... | 10/28/2008 |
| 7239285 | Circular polarity elliptical horn antenna A relatively low cost, easy to install and aesthetically pleasing digital video broadcast from satellite (DVBS) elliptical horn antenna designed as part of a reflector antenna system to receive satellite television broadcast signals with circular polarity. This type... | 07/03/2007 |
| 7230217 | Hybrid rectangular heating applicators A rectangular microwave applicator operating at a predetermined frequency and comprising a microwave enclosure forming a cavity having first and second transverse dimensions and a longitudinal dimension n the direction of propagation of microwave energy, wherein sai... | 06/12/2007 |
| 7209088 | Feed antenna including dielectric waveguide A feed antenna includes a pair of conductive members, a dielectric waveguide placed therebetween, a dielectric member that is placed between the conductive members and located close to the dielectric waveguide, and a plurality of dielectric binding sections for bind... | 04/24/2007 |
| 7190324 | Low-profile lens antenna This invention relates to a low-profile lens antenna. In particular, this invention relates to a low-profile lens antenna for use in a depression in a surface, e.g. a concavity in the ground. A low-profile lens antenna is provided that comprises a feed and a lens, w... | 03/13/2007 |
| 7180469 | System and method for providing antenna radiation pattern control An antenna for providing radiation pattern control contains an antenna housing having a series of reflective steps and at least one rod located above the series of reflective steps. The antenna also contains a radiation element situated within the antenna housing so... | 02/20/2007 |
| 7180459 | Multiple phase center feedhorn for reflector antenna A feedhorn driving method and apparatus allows the establishment of multiple phase centers using only a single multimode feedhorn. At least two higher-order modes are extracted from the feedhorn and weighted in amplitude and phase. The phase center separation is est... | 02/20/2007 |
| 7119755 | Wave antenna lens system An array of dielectric wave antennas is disclosed. Each wave antenna has a central dielectric portion and two dielectric tapered portions, disposed on opposite sides of the central dielectric portion. The array is deployed in a lens shape and allows variation of the... | 10/10/2006 |
| 7027002 | Planar wideband antennas Wideband antennas with omnidirectional coverage have both military and commercial applications. In one embodiment, the Planar Inverted Cone Antenna (PICA) is composed of a single flat element vertically mounted above a ground plane. A geometry of Planar Inverted Con... | 04/11/2006 |
| 6992639 | Hybrid-mode horn antenna with selective gain The present invention provides a new class of hybrid-mode horn antennas. The present invention facilitates the design of boundary conditions between soft and hard, supporting modes under balanced hybrid condition with uniform as well as tapered aperture distribution... | 01/31/2006 |
| 6972725 | Ultra-broadband antenna incorporated into a garment A multi-antenna garment comprising a first and second antenna incorporated into an electrically nonconductive garment, with tubular composites to improve gain and mitigate radiation hazard. The first antenna includes first and second RF elements attached to a first ... | 12/06/2005 |
| 6947012 | Low cost electrical cable connector housings and cable heads manufactured from conductive loaded resin-based materials Electrical connector housings are formed of a conductive loaded resin-based material which provides superior protection from EMI and RFI by absorbing such interfering signals. The conductive loaded resin-based material comprises micron conductive powder(s), conducti... | 09/20/2005 |
| 6930647 | Semicircular radial antenna At least one of the following requirements is satisfied. A position of a curvature center of an arcuate portion in at least one of waveguide plates is selected between a connecting member and a feeder, in accordance with a desired horizontal beam radiation character... | 08/16/2005 |
| 6924768 | Printed antenna structure The present invention discloses a printed antenna structure. The printed antenna structure comprises: a dielectric layer having opposed surfaces, a ground plane layer covered on the first surface of the dielectric layer, a feed-line extending over the second surface... | 08/02/2005 |
| 6914568 | Integral antenna and radio system A Planar Inverted F Antenna (PIFA) and a radio module integrated into a single module. The present invention permits the PIFA to be removably secured on the top of a radio chip module. In one embodiment of the invention, a non-conductive antenna frame is removably s... | 07/05/2005 |
| 6864850 | Multibeam antenna When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 15b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel wit... | 03/08/2005 |
| 6859176 | Dual-band omnidirectional antenna for wireless local area network The present invention relates to a dual-band omnidirectional antenna for wireless LANs. The antenna has a planar dielectric substrate, and first and second conductive patterns. The planar dielectric substrate has two parallel surfaces. The first conductive pattern i... | 02/22/2005 |
| 6828939 | Multi-band antenna The present invention reveals a multi-band antenna comprising a dielectric plate, a first metal foil and two second metal foils, where the first metal foil and the second metal foils are adhered to a surface of the dielectric plate. The first metal foil comprises a ... | 12/07/2004 |
| 6809695 | Secondary reflector for SHF antennae of the Cassegrain type The invention concerns the secondary reflectors of SHF antennae of the Cassegrain type. It consists of providing the secondary basic reflector (103) of this antenna with a first circular ring (104) in the shape of a cylinder directed toward the ... | 10/26/2004 |
| 6803883 | Radio frequency electromagnetic emissions shield A shield for shielding radio frequency emissions being emitted from a communications antenna. The shield has a first layer of material having the physical property of generally absorbing radio frequency electromagnetic emissions and a second layer of material having... | 10/12/2004 |
| 6573873 | Stepped horn with dielectric loading A horn for direct radiation or for use as a reflector feed is for operation at disparate frequencies. The horn has a conventionally LSE1,0 distribution at the lower of the two frequencies, and both LSE1,0 and LSE3,0 modes,... | 06/03/2003 |
| 6512493 | Chip antenna Disclosed herein is a chip antenna. The chip antenna has a base block, and primary and second conductor lines. The base block is comprised of opposite top and bottom surfaces and side surfaces between the top and bottom surfaces, and made of one of dielec... | 01/28/2003 |
| 6452561 | High-isolation broadband polarization diverse circular waveguide feed A high-isolation broadband polarization diverse circular waveguide feed apparatus capable of supporting any arbitrary linear, right-hand circular, left-hand circular or elliptically polarized electromagnetic wave with desirable performance over a broad ra... | 09/17/2002 |
| 6437753 | Primary radiator suitable for size reduction and preventing deterioration of cross polarization characteristic A dielectric feeder has a holding portion inserted into the interior of a waveguide and a horn-shaped radiating portion having different radiation angles in major- and minor-axis directions. A plurality of annular grooves each having a depth corresponding... | 08/20/2002 |
| 6388633 | Multibeam antenna When a converter 14 is rotated via a rotation mechanism 17, the arrangement inclination angle of two primary radiators 15a and 16b can be adjusted in the range of 0 to 20 deg. with respect to an axis which is in parallel with the ground. Also the receptio... | 05/14/2002 |
| 6208310 | Multimode choked antenna feed horn An antenna feed horn (10) for a satellite antenna array that includes multiple chokes (34, 36, 40, 42, 44) that provide effective control of the horn aperture mode content to generate radiation patterns which substantially have equal E-plane and H-plane b... | 03/27/2001 |
| 6107897 | Orthogonal mode junction (OMJ) for use in antenna system A multiple beam antenna system including a reflector that is at least partially parabolic in one dimension, a pair of dielectric lenses, and a pair of waveguides. Multiple received beams are received and reflected by the reflector into an orthogonal mode ... | 08/22/2000 |
| 6014110 | Antenna and method for receiving or transmitting radiation through a dielectric material A low profile, receiving and/or transmitting antenna is adapted to be mounted onto an interior portion of a building or other structure to receive or transmit radiation through a first dielectric material, such as a window, associated with the building or... | 01/11/2000 |
| 5973653 | Inline coaxial balun-fed ultrawideband cornu flared horn antenna The inline coaxial balun fed cornu flared horn antenna is formed by transitioning a coaxial transmission line to a parallel-plate transmission line with a Klopfenstein impedance profile and terminating with a flared horn antenna based on a scaled cornu sp... | 10/26/1999 |
| 5883604 | Horn antenna Horn antenna (10) produces an electromagnetic energy field and includes waveguide (12) for generating an electromagnetic field having an electric field (52, 54, 56) and magnetic field (58 and 60). Horn portion (14) expands the electric field (52, 54, 56) ... | 03/16/1999 |
| 5757331 | Leakage dielectric waveguide and plane antenna using said leakage dielectric waveguide A leakage dielectric waveguide includes a housing made of plane-shaped electrical conductors located parallel to each other, and a dielectric strip for propagating a high-frequency wave between the parallel electrical conductors, wherein the dielectric st... | 05/26/1998 |
| 5642121 | High-gain, waveguide-fed antenna having controllable higher order mode phasing A diverging shall antenna fed by a waveguide supplying TE11 mode is described. A dielectric rod partially contained within the waveguide converts the TE11 mode to a dominant or HE11 mode. The HE11 mode is contro... | 06/24/1997 |
| 5604505 | Phase tuning technique for a continuous transverse stub antenna array A continuous transverse stub antenna array that comprises phase tuning sections disposed between adjacent stub elements. The antenna array includes a sheet of dielectric material having a plurality of transverse stub elements extending from a first surfac... | 02/18/1997 |
| 5218373 | Hermetically sealed waffle-wall configured assembly including sidewall and cover radiating elements and a base-sealed waveguide window Directed millimeter wave radiation from internal elements of a microwave circuit through the housing cover, housing base, and side walls of a hermetically-sealed MMIC integrated subsystem assembly uses a waffle-wall array of conductive posts as a band rej... | 06/08/1993 |
| 5166698 | Electromagnetic antenna collimator A dielectric inset mountable within a conical horn antenna for focusing an impinging electromagnetic wave front as a planar wave front at an attached wave guide. In one construction a homogeneous inset having an ellipsoidal forward surface and conical aft... | 11/24/1992 |
| 4918411 | Dielectric aperture assembly and method for fabricating the same A fabricated dielectric aperture assembly includes a first layer of electrically conductive material having an opening therethrough to define a first aperture, a second layer of electrically conductive material spaced from the first electrically conductiv... | 04/17/1990 |
| 4792814 | Conical horn antenna applicable to plural modes of electromagnetic waves A conical horn antenna applicable to plural modes of electromagnetic waves is substantially composed of a feed waveguide positioned on the base end side and feeding a dominant mode of an electromagnetic wave, a conical horn positioned on the fore end side... | 12/20/1988 |
| 4774520 | Primary microwave source for a conical scanning antenna and an antenna containing it A microwave primary source with a phase conical scan having a conical horn containing an obstacle which gives rise to a wave that propagates in the TE21 mode in quadrature with the TE11 fundamental mode in the opening of the horn; th... | 09/27/1988 |
| 4760404 | Device and method for separating short-wavelength and long-wavelength signals A device for separating signals in the long or radar wavelength bands from signals in the short or infrared to ultraviolet wavelength bands which occupy a common area. A waveguide for directing radar band wavelengths has apertures in opposing walls of the... | 07/26/1988 |
