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| Number | Title | Issue Date |
| 7750762 | Waveguide corner and radio device A waveguide corner including a first rectangular waveguide and a second rectangular waveguide. An end face of the second rectangular waveguide is made open to an H-plane wall of the first rectangular waveguide and the H-plane walls of the second rectangular waveguid... | 07/06/2010 |
| 7750763 | Waveguide bend having a square shape cross-section An improved 90° waveguide bend has the following features: the waveguide bend has two waveguide connectors located perpendicularly to each other, the waveguide connectors have a square internal cross section havin... | 07/06/2010 |
| 7561013 | Small NRD guide bend An LSE mode, which is a parasitic mode, can be effectively suppressed by a simple structure, and a reduction in size and weight can be thereby facilitated. Further, a metal body 3 is arranged in the vicinity of a dielectric waveguide 1 of an NRD guide ... | 07/14/2009 |
| 7420434 | Circular to rectangular waveguide converter including a bend section and mode suppressor A compact circular waveguide system can connect circular waveguides through a bend while avoiding excessive interaction between the orthogonal modes of the circular waveguides. A compact bend system with circular waveguide input and output can be achieved by providi... | 09/02/2008 |
| 7359607 | Waveguide for thermo optic device A waveguide and resonator are formed on a lower cladding of a thermo optic device, each having a formation height that is substantially equal. Thereafter, the formation height of the waveguide is attenuated. In this manner, the aspect ratio as between the waveguide ... | 04/15/2008 |
| 7331723 | Enhanced coplanar waveguide and optical communication module using the same Provided are an enhanced structure of a coplanar waveguide that is a kind of transmission line used for optical communication for radio frequency (RF), and an optical communication module employing the same. While having a basic structure including a conductive stri... | 02/19/2008 |
| 7304554 | U-shaped microwave and millimeter wave resonator filter A filter including a body on which a waveguide groove, whose one surface is open, is formed in a U-shape and a plurarity of inductive resonant windows are provided along a longitudinal direction of the waveguide groove at a predetermined interval in the waveguide gr... | 12/04/2007 |
| 7283855 | Dielectric waveguide having a 45° face and method of production thereof A dielectric waveguide which comprises a first single crystal magnesium oxide block having a surface of face (001), (100) or (010) and a first copper oxide superconducting film formed on the above-described surface in a c-axis crystal orientation perpendicular to th... | 10/16/2007 |
| 7215838 | Resistive heater for thermo optic device Resistive heaters formed in two mask counts on a surface of a grating of a thermo optic device thereby eliminating one mask count from prior art manufacturing methods. The resistive heater is comprised of a heater region and a conductive path region formed together ... | 05/08/2007 |
| 7206619 | Dielectric waveguide having a 45° face and method of production thereof A dielectric waveguide which comprises a first single crystal magnesium oxide block having a surface of face (001), (100) or (010) and a first copper oxide superconducting film formed on the above-described surface in a c-axis crystal orientation perpendicular to th... | 04/17/2007 |
| 7120336 | Resonator for thermo optic device A resonator for thermo optic devices is formed in the same process steps as a waveguide and is formed in a depression of a lower cladding while the waveguide is formed on a surface of the lower cladding. Since upper surfaces of the resonator and waveguide are substa... | 10/10/2006 |
| 7106153 | Waveguide interconnection apparatus Provided is a waveguide interconnection apparatus making rectangular interconnecting portions to be a curved structure, whereby it is possible to reduce a signal reflection and a signal loss due to a mismatch occurred from a discontinuous portion where waveguides ar... | 09/12/2006 |
| 7061445 | Multiband/multichannel wireless feeder approach An antenna system comprising a support structure and a multiband/multichannel wireless feeder configured for coupling antennas located proximate the top of a support structure with electronics located proximate the base of the support structure to overcome losses ty... | 06/13/2006 |
| 7020365 | Resistive heater for thermo optic device Resistive heaters formed in two mask counts on a surface of a grating of a thermo optic device thereby eliminating one mask count from prior art manufacturing methods. The resistive heater is comprised of a heater region and a conductive path region formed together ... | 03/28/2006 |
| 7009469 | Compact waveguide filter and method A compact multiple VSWR element filter in which one or more of the VSWR filter elements is a waveguide bend or a waveguide media transition. Methods are also disclosed. ... | 03/07/2006 |
| 7006746 | Waveguide for thermo optic device A waveguide and resonator are formed on a lower cladding of a thermo optic device, each having a formation height that is substantially equal. Thereafter, the formation height of the waveguide is attenuated. In this manner, the aspect ratio as between the waveguide ... | 02/28/2006 |
| 6960308 | Endothermic heat shield composition and method for the preparation thereof A method for preparing an endothermic heat shield composition, which comprises at least 50 wt/wt % hydrated salt and at least one filler material, the method comprising the steps of: a) heating the hydrated salt to a temperature at... | 11/01/2005 |
| 6909729 | Dielectric waveguide with transverse index variation that support a zero group velocity mode at a non-zero longitudinal wavevector Optical components including a laser based on a dielectric waveguide extending along a waveguide axis and having a refractive index cross-section perpendicular to the waveguide axis, the refractive index cross-section supporting an electromagnetic mode having a zero... | 06/21/2005 |
| 6876277 | E-plane filter and a method of forming an E-plane filter An E-plane filter comprises a housing having a waveguide filter channel and a septum defining a plurality of couplers spaced apart along the length of the filter channel, thereby forming a resonator cavity between each adjacent coupler. The portion of the filter cha... | 04/05/2005 |
| 6794962 | Curved waveguide element and transmission device comprising the said element The invention reduces the size of waveguide circuits. The invention proposes to change the cross section of a waveguide in a curved part. Thus, a curved element according to the invention makes it possible at the same time to make a change in waveguide cross action.... | 09/21/2004 |
| 6781477 | System and method for increasing the channel capacity of HVAC ducts for wireless communications in buildings A system for transmitting wireless communications within ductwork. The system includes a plurality of transmitter devices for introducing electromagnetic radiation into the ductwork such that the ductwork acts as a waveguide for the electromagnetic radiation, said t... | 08/24/2004 |
| 6677839 | Vertical transition device for differential stripline paths and optical module A vertical transition device for differential stripline paths, connects differential microstrip paths on a horizontal plane with differential triplate paths on another horizontal plane in a multilayered architecture. The differential microstrip paths incl... | 01/13/2004 |
| 6573813 | All-dielectric coaxial waveguide with annular sections An all-dielectric coaxial waveguide comprising a dielectric core region; an annulus of dielectric material, surrounding the core region, in which electromagnetic radiation is confined; and an outer region of cylindrically coaxial dielectric shells of alte... | 06/03/2003 |
| 6552636 | Small-sized cylindrical waveguide bend having low reflection characteristic A small-sized cylindrical waveguide having a low reflection characteristic is disclosed. An inner bent portion connects cavities of first and second waveguide portions in a range of not larger than one-fourth of the diameter of the cavities on each of an ... | 04/22/2003 |
| 6359535 | Dielectric waveguide line bend formed by rows of through conductors A high-frequency dielectric waveguide line comprising a dielectric substrate with two conductor layers on its two surfaces, and a plurality of rows of through conductors in the substrate connecting the two conductor layers. The distances between the throu... | 03/19/2002 |
| 6274858 | Bends in a compact circularly polarized microwave feed A feed that provides circularly polarized microwave energy such as for energizing a microwave oven cavity. The feed includes a transformer to match a linearly polarized rectangular waveguide to a polarization waveguide section which may be circular or squ... | 08/14/2001 |
| 6265703 | Arc suppression in waveguide using vent holes A technique for passive suppression of arcs within a microwave frequency waveguide section. The waveguide is configured to have a bend at a point where the naturally, relatively high location occurs within the run. The bend at the high point causes arcs t... | 07/24/2001 |
| 6181224 | Waveguide filter with a resonator cavity having inner and outer edges of different lengths A waveguide filter includes one or more resonator cavities which extend between an input to the filter and an output from the filter. Each resonator cavity in the filter has a center line with a chosen extension and a mechanical length. The mechanical len... | 01/30/2001 |
| 6163227 | Non radiative dielectric waveguide having a portion for line conversion between different types of non radiative dielectric waveguides In a millimeter wave module or the like having both a normal NRD guide and a hyper NRD guide, a conversion portion structure for non, radiative dielectric waveguides of different types has excellent conversion characteristics at the connection between the... | 12/19/2000 |
| 6133811 | Apparatus for bending a flexible conduit A bending mechanism for flexible waveguide uses a combination of an elongate arm (1), two short bracket arms (3 & 7) and a gear train (5, 11, 13 & 9) linking the bracket arms to bend a flexible waveguide (24) over a range of positions. The bend is formed ... | 10/17/2000 |
| 6094106 | Non-radiative dielectric waveguide module A module equipped with a non-radiative dielectric waveguide in accordance with this invention comprises a pair of parallel flat conductors arranged at a space of 1/2 or below of a high frequency signal wavelength λ and a dielectric strip extending betwee... | 07/25/2000 |
| 6011453 | Compact wave guide arrangement and a method for producing it A waveguide device for transmitting and processing microwave signals includes a plate structure having recesses forming waveguides for the transmitting the microwave signals between microwave components. The plate structure includes a body plate and cover... | 01/04/2000 |
| 5986527 | Planar dielectric line and integrated circuit using the same line A small and inexpensive planar dielectric line that can be easily connected to electronic parts, such as ICs, and has smaller conduction losses. The planar dielectric line includes a dielectric substrate having first and second surfaces opposedly facing e... | 11/16/1999 |
| 5982255 | LSM and LSE mode dielectric waveguide having propagating and non-propagating regions A dielectric waveguide has a dielectric member disposed between a pair of parallel conductor flat surfaces, such that a propagating region and a non-propagating region are formed. The spacing between the conductor flat surfaces in the non-propagating regi... | 11/09/1999 |
| 5977851 | Wireless signal distribution in a building HVAC system The present invention is directed to a system for using the ductwork of a building for transmitting electromagnetic radiation. The system includes a device for introducing electromagnetic radiation into the ductwork such that the ductwork acts as a wavegu... | 11/02/1999 |
| 5739734 | Evanescent mode band reject filters and related methods Apparatus and related methods for an easily manufactured evanescent mode band reject filter that provides high performance with minimal dependence on critical dimensions. According to one embodiment, the present invention provides a band reject filter inc... | 04/14/1998 |
| 5311154 | Waveguide converter for transmitting input radio wave with proceeding direction thereof changed to waveguide path A bend portion is provided on the inside of a waveguide main body for bending a proceeding direction of a radio wave from a waveguide on the side of a primary feed horn. The radio wave is transmitted with its proceeding direction changed such that an elec... | 05/10/1994 |
| 5289710 | Apparatus for bending a flexible conduit An apparatus for the bending of a flexible conduit having first and second ends includes first and second assemblies which are fixed for relative rotation with the first and second ends. An axis of rotation passes through the first and second assemblies. ... | 03/01/1994 |
| 5266910 | Directional coupler on mirror elbow for microwaves Disclosed is a directional coupler on a mirror elbow for a microwave transmission line sized to convey very high power. The coupler consists of a main guide with a mirror elbow and at least one secondary guide. The secondary guide is joined by one of its ... | 11/30/1993 |
| 5266909 | Waveguide circulator A circulator including a unique shaped transformer having triangular apexes extending symmetrically into the respective channel and connected to two opposed side walls by coplanar tabs. One of the channel sidewalls has a minimum of three sections to provi... | 11/30/1993 |
