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| Number | Title | Issue Date |
| 7973616 | Post-wall waveguide based short slot directional coupler, butler matrix using the same and automotive radar antenna A short slot directional coupler includes a dielectric substrate having both surfaces each covered by a metal film, a first via-hole string and a second via-hole string, each of which has via-holes penetrating through the substrate, and formed so that a distance bet... | 07/05/2011 |
| 7755450 | Waveguide correlation unit and a method for its manufacturing A waveguide correlation unit and a method for manufacturing the same are disclosed. The waveguide correlation unit includes stacked first and second waveguide plates having an identical configuration, wherein a central coupling plate is disposed therebetween. Due to... | 07/13/2010 |
| 7671700 | Hollow waveguide directional coupler A hollow waveguide directional coupler comprises two hollow waveguide sections that are coupled to each other by a plurality of coupling openings formed in a wall extending between the hollow waveguide sections. Two adjacent coupling openings have a distance of 3λ | 03/02/2010 |
| 7382215 | Image guide coupler switch In one implementation, a method is provided for an image guide coupler. The method includes controlling a coupling between adjacent waveguides of a propagating wave by controlling a coupling through at least one field pick up probe positioned next to the adjacent wa... | 06/03/2008 |
| 7349673 | Adaptive radio transceiver with an antenna matching circuit An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 03/25/2008 |
| 7339520 | Phased array terminal for equatorial satellite constellations A low cost and low profile antenna for commercial use, either in a fixed or mobile condition is disclosed. The antenna has a generally flat circular plate that rotates to seam the azimuth direction. A plurality of radiation elements are positioned on the surface of ... | 03/04/2008 |
| 7311796 | Plasma processing apparatus A plasma processing apparatus comprises: a chamber 12 having at least one opening and for generating plasma; a dielectric member 14 provided to cover the opening air-tightly; at least one wave guide 16 provided in the exterior of the chamber suc... | 12/25/2007 |
| 7307492 | Design, layout and method of manufacture for a circuit that taps a differential signal An apparatus that includes a first conducting strip having a narrowed width where the first conducting strip also acts as a first electrode for a first tapping capacitance. The first tapping capacitance has a second electrode that is: 1) parallel to the first conduc... | 12/11/2007 |
| 7286093 | Frequency dispersive antenna applied in particular to a meteorological radar The invention relates to a frequency dispersive antenna comprising radiating waveguides divided into three legs. The indirect angle between the first and second leg is greater than or equal to 90 degrees and less than 180 degrees, the direct angle between the second... | 10/23/2007 |
| 7221239 | Variable power divider A variable power divider and method can vary the RF power between ports in a high power and multi-carrier RF environment, such as is used in controlling signals sent and received in a base station antenna. The variable power divider can include a single-control phas... | 05/22/2007 |
| 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 |
| 7138887 | Coupler with lateral extension A coupler is disclosed that includes first and second mutually coupled spirals or loops disposed on opposite sides of a dielectric substrate. The substrate may be formed of one or more layers and the loops may have a number of turns appropriate for a given applicati... | 11/21/2006 |
| 7116945 | Adaptive radio transceiver with an antenna matching circuit An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 10/03/2006 |
| 7109823 | Image guide coupler switch In one embodiment, an image guide coupler switch is provided having a dielectric image guide coupler with a coupling control circuit. In this embodiment the coupling control circuit has at least one field pick up probe which extends at least part way across the imag... | 09/19/2006 |
| 7068118 | Pulse modulator for nonradiative dielectric waveguide, and millimeter wave transmitter/receiver using the same A pulse modulator includes a circulator which comprises: two ferrite plates; a plurality of mode suppressors for transmitting therethrough an LSM mode electromagnetic wave while shutting off an LSE mode electromagnetic wave; and an impedance matching member mounted ... | 06/27/2006 |
| 7034774 | Feed structure and antenna structures incorporating such feed structures A polarizer for an antenna and antenna structures are disclosed. According to one aspect a polarizer includes a generally cylindrical sidewall portion extending between spaced apart end portions. At least one polarizing structure extends substantially continuously a... | 04/25/2006 |
| 6998936 | Broadband microstrip directional coupler A directional coupler comprises, arranged on a substrate, two first ports connected by a first line and two second ports connected by a second line. The lines extend through a coupling zone in which they are separated by a conductor area not connected to the lines. | 02/14/2006 |
| 6956447 | Directional coupler using non-radiative dielectric waveguide A dictionary coupler using a non-radiative dielectric waveguide is disclosed. Particularly, a millimeter wave band non-radiative dielectric waveguide directional coupler using a multiple-hole structure in which two parallel NRD waveguides located between upper and l... | 10/18/2005 |
| 6956998 | Compact optical delay lines The present invention provides an optical delay, for example, an optical delay line, having at least first and second waveguides, each waveguide having a first end at a first side of the device and a second end at a second side of the device, wherein the second end ... | 10/18/2005 |
| 6927653 | Dielectric waveguide type filter and branching filter A cutoff waveguide path is provided in a part of a dielectric waveguide comprising a pair of main conductive layers formed on an upper and a lower surfaces of a dielectric and groups of conductive vias arranged in the direction of signal transmission with a space of... | 08/09/2005 |
| 6917789 | Adaptive radio transceiver with an antenna matching circuit An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged ... | 07/12/2005 |
| 6897739 | Waveguide power divider and combiner utilizing a resistive slot A compact inline waveguide power divider is provided that comprises a primary waveguide in communication with two parallel waveguides. The two parallel waveguides are stacked on top of one another and each parallel waveguide further comprises an output port. Accordi... | 05/24/2005 |
| 6868258 | Structure for connecting non-radiative dielectric waveguide and metal waveguide, millimeter wave transmitting/receiving module and millimeter wave transmitter/receiver It is an object of the invention to provide a connection structure for connecting the dielectric strip of an NRD guide with a metal waveguide, in which the conversion loss (connection loss) for high-frequency signals is reduced, and in which the NRD guide as well as... | 03/15/2005 |
| 6737934 | Directional Coupler, antenna device, and transmitting-receiving device A first transmission line and a second transmission line are caused to be partially opposite to each other, and by use of the opposite portions of the first transmission line and the second transmission line, the first transmission line and the second transmission l... | 05/18/2004 |
| 6707349 | Directional coupler for microwave cavities A directional coupler for microwave cavities is used to guide microwave signal power in both directions. The directional coupler contains a first carrier and a second carrier overlapped with each other, a metal line (such as a micro strip line) between the first and... | 03/16/2004 |
| 6668106 | Crosspoint microwave switching architecture for optical telecommunications The present invention combines several features to create a novel type of optical telecommunications switching component using microwave waveguides as opposed to the usual methods employing light deflection or digital signal processing. Some of the compon... | 12/23/2003 |
| 6542046 | Directional coupler, antenna device, and radar system A directional coupler includes two non-radiative dielectric lines, each formed by a dielectric strip between flat conductive surfaces placed substantially parallel to each other, such that the two non-radiative dielectric lines are close to each other. Th... | 04/01/2003 |
| 6483396 | Microwave system with redundant processing devices and passive switching A redundant microwave system operable to process a microwave signal propagating in a microwave cavity includes a microwave cavity and two microwave processing devices. Each microwave processing device has a transmissive impedance when it is on and a refle... | 11/19/2002 |
| 6441699 | Directional coupler, antenna device, and transmitting-receiving device A first transmission line and a second transmission line are caused to be partially opposite to each other, and by use of the opposite portions of the first transmission line and the second transmission line, the first transmission line and the second tra... | 08/27/2002 |
| 6400235 | Radio frequency, millimeter-wave or microwave device and method of making same A coupler includes one or more conductors and a support structure for the conductors within the coupler. The conductors are inserted through oblong holes in the support structure while the support structure is in an assembling position. When the support s... | 06/04/2002 |
| 6285266 | Directional coupler having shiftable parallel dielectric transmission lines A first transmission line and a second transmission line are caused to be partially opposite to each other, and by use of the opposite portions of the first transmission line and the second transmission line, the first transmission line and the second tra... | 09/04/2001 |
| 6166699 | Antenna source for transmitting and receiving microwaves The invention relates to an antenna source transmitting and receiving polarized microwaves, the source including a transducer for separating the transmission signals from the reception signals, the frequencies of the transmission signals being different f... | 12/26/2000 |
| 6147569 | Non-radiative dielectric waveguide coupler A non-radiative dielectric waveguide coupler for coupling or dividing high-frequency signals between at least two dielectric waveguides arranged maintaining a predetermined gap between a pair of parallel flat conductors, wherein said two dielectric wavegu... | 11/14/2000 |
| 6144267 | Non-Radiative dielectric line assembly A normal NRD guide is constituted in the part to be coupled with a dielectric resonator, a hyper NRD guide for simply transmitting the LSM01 mode is constituted in a multipoints circulator part, the normal NRD guide is constituted in a coupler part, the h... | 11/07/2000 |
| 6127902 | Waveguide directional coupler capable of propagating higher order modes A simply made and very broad band directional coupler includes a hollow middle section (CS) provided with an empty interaction space having two ends, one pair of hollow guides (H1, H3) coupled to one end of the interaction space, another pair of hollow gu... | 10/03/2000 |
| 6121868 | Electric switch device which can prevent damage to it and devices connected to it The present invention provides an electric device comprising two electric terminals, a button mechanism having a push button that can depressed to toggle between "on" and "off" statuses, and a conductive reed that conducts electric current between the two... | 09/19/2000 |
| 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 |
| 6069529 | Compact redundancy combiner assembly and method of operation thereof A redundancy combiner assembly has two amplifiers connected in parallel along a waveguide path to a hybrid. The hybrid is connected through a transfer switch to an antenna. The hybrid contains a movable coupling plate. The coupling plate has a coupling ar... | 05/30/2000 |
| 5920245 | Nonradiative dielectric line apparatus including a specifically oriented circuit board The ease of mounting a circuit board on a nonradiative dielectric line is improved, the degree of freedom of conductor film patterns formed on the circuit board is increased, and the degree of integration can be easily increased to fit within a small size... | 07/06/1999 |
| 5917232 | Dielectric-line integrated circuit A dielectric-line component (such as an oscillator or circulator) has a dielectric strip between a pair of electrically conductive flat-plates. The component is to be combined with another dielectric-line component which also has dielectric strips between... | 06/29/1999 |
