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7944324 |
Compact orthomode transduction device optimized in the mesh plane, for an antenna
An orthomode transducer device (D), for an antenna, comprises (i) a main guide (GP) designed for the propagation along a main axis of first and second modes having polarizations orthogonal to each...
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7741934 |
Coupling a signal through a window
A device and method is provided that includes a window for coupling a signal between cavities of a device or between cavities of different devices. A wall or microstructure is formed on a surface...
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7692125 |
Evanescent wave coupling for Fresnel direction finding
An apparatus includes a radome and an evanescent wave-coupled windowing system in the radome. In operation, the apparatus receives radiation reflected from an object that is incident upon a...
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7688163 |
Pillbox vacuum window
A pillbox vacuum window of the present invention has a first metal part and a second metal part. The first metal part includes a ceramic disk formed with a metallization layer in a peripheral area...
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7545570 |
System for selectively blocking electromagnetic energy
A system for selectively blocking electromagnetic energy. The system includes a first mechanism for employing a perforated component to pass a beam characterized by a first property and reject a...
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7538640 |
Waveguide and attenuation pole waveguide bandpass filter
A waveguide and an attenuation pole waveguide bandpass filter with a simple structure without any additional structure such as a negative cross coupling between resonators. The attenuation pole...
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7512395 |
Receiver and integrated AM-FM/IQ demodulators for gigabit-rate data detection
This disclosure addresses providing gigabit-rate data transmission over wireless radio links, using carrier frequencies in the millimeter-wave range (>30 GHz). More specifically, a circuit for...
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7417376 |
Linear electron beam tube having a dome shape RF window
An electron beam tube device such as an inductive output tube of the integral cavity type has a RF window which re-enters the interaction space within the cavity thereby defining a space that is...
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7365620 |
Microwave window with a two part metallic frame having different coefficients of thermal expansion
An RF feed-through connector has a single pin or multi-pins supported and hermetically sealed between a first portion of the connector facing the hermetically sealed interior portion of an...
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7204140 |
Radar level gauge flange
The present invention relates to a radar level measuring device for non-contact measurement of a level of a product in a container. The device comprises a flange which is mounted on the container...
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7049909 |
Ceramic microwave window having a prestressed ring surrounding the window
The invention relates to microwave windows used for providing a vacuum seal and transmitting the electromagnetic energy output by a high-power microwave tube. The window comprises a dielectric disk...
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6965287 |
Low reflection microwave window
A microwave window for transmitting microwave radiation includes a solid body and a flange. The solid body includes a first surface and a second surface spaced apart from each other in a first...
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6864471 |
Cover for an opening in a high-frequency heating apparatus
A plurality of slots are provided so as to be located between a thin plate flexible opening section screen member and a heating chamber wall surface 1 for allowing insertion of the opening section...
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6844798 |
Device for transmitting electromagnetic waves through an aperture in a wall
A device for efficient transmission of electromagnetic waves comprising two layers of dielectric separated by a gap or space. The layers may be uniform or laminar, orthogonal or non-orthogonal to...
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6658932 |
Measuring device and process seal therefor
A measuring device for determining the level of material in a container including a process seal comprising: a substantially conical portion including a narrow end and a wide end, the conical...
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6522226 |
Transparent metallic millimeter-wave window
A millimeter-wave window is constructed from a high conductivity metal plate. The metallic plate is made transparent over a range of frequencies by perforating it with a periodic array of slots. In...
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6493499 |
Waveguide window
A window for a waveguide for a beam of electromagnetic radiation. The window includes a layer of a material capable of allowing electromagnetic radiation to pass therethrough and a support on each...
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6469599 |
Assembly for the pressure-tight separation of a first waveguide from a second waveguide and method of producing such an assembly
The invention concerns an assembly for the pressure-tight separation of a first waveguide (12) from a second waveguide (16), having a pressure-resistant conductor body (22) and a first adaptor...
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6437510 |
Crossed-field amplifier with multipactor suppression
A crossed-field device such as a crossed-field amplifier or magnetron has a cathode body portion and an anode which cooperates with a crossed magnetic field to maintain emitted electrons on...
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6417748 |
Filling level measuring device operating with microwaves, having an insert composed of a dielectric, and process for producing the dielectric
A description is given of a filling level measuring device operating with microwaves, having a housing and an insert composed of a dielectric, and of a process for producing the dielectric, in...
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6393909 |
Fluid level measuring device measuring fluid level in a container at high temperatures and/or high pressures and/or in a chemically aggressive environment using microwaves
The invention concerns a microwave level measuring device for measuring of material levels in containers, suitable for operation at extreme container conditions, comprising high temperatures, high...
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6118358 |
High average-power microwave window with high thermal conductivity dielectric strips
A high average-power microwave window is provided whose thermal conductivity has been enhanced to enable it to transmit higher average RF power levels than conventional windows of the same size....
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5936493 |
Low cost, one-shot switch waveguide window
Inexpensive and reliable apparatus for blanking the signal path between an antenna and a transmitter or a receiver to protect them from harmful radiation in the absence of power forms supplied...
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5936494 |
Waveguide window
The waveguide window assembly disclosed herein is particularly adapted for use in conjunction with a waveguide housing of a high expansion material such as aluminum. The window is formed of a...
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5926080 |
Level gage waveguide transitions and tuning method and apparatus
A waveguide for microwave radar level gages that includes a process sealed barrier in the waveguide that is impedance matched with bore transition sections of the waveguide at opposite ends...
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5917389 |
Monolithic dielectric microwave window with distributed cooling
A microwave window is made as a flat layer of dielectric material having opposite first and second surfaces. Between these surfaces, the window is formed with a plurality of parallel coolant...
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5877663 |
Microwave waveguide for tank level sensors
A process sealed waveguide is formed in a flange mounted on a tank, and is used for transmitting microwave energy from a source of microwave energy to an aperture of an antenna on the interior of...
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5872494 |
Level gage waveguide process seal having wavelength-based dimensions
A waveguide assembly for a process sealed level gage includes first and second waveguide portions, a process sealing cavity and a mechanical barrier. The first waveguide portion has a first...
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5838212 |
High frequency transition arrangement
In a high frequency transmission arrangement such as that used to deliver microwave energy from a magnetron to a waveguide, a ceramic probe is covered with a non-ceramic dielectric material such as...
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5812040 |
Microwave vacuum window having wide bandwidth
A distributed microwave window (12) couples microwave power in the HE11 mode between a first large diameter waveguide (32) and a second large diameter waveguide (34), while providing a physical...
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5770990 |
Microwave window
A microwave window includes a transparent disk made of glass or ceramic that lets microwaves through and an attachment device made of metal that is used to attach the transparent disk. This...
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5703289 |
Microwave transmitter housing
An improved housing assembly is used for a microwave level sensing instrument for sensing level of a process fluid in a vessel. The process vessel includes a vessel flange defining an opening into...
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5668513 |
Hermetically sealed structure for junction of two waveguides
A first circular waveguide or an elliptical waveguide has an inner circumferential surface tapered such that its inside dimension is gradually reduced continuously toward an end thereof. The...
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5610567 |
Superconducting radiofrequency window assembly
The present invention is a superconducting radiofrequency window assembly for use in an electron beam accelerator. The srf window assembly (20) has a superconducting metal-ceramic design. The srf...
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5600290 |
Hermetically sealed electromagnetic window and method of forming the same
A hermetically sealed electromagnetic window is formed by butt end brazing an overhanging dielectric window between first and second waveguide segments. The waveguide segments have opposed knife...
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5568015 |
Fluid-cooled dielectric window for a plasma system
A fluid-cooled dielectric window for a microwave plasma system which uses microwave absorbing fluids is described. The window includes a dielectric window and a cooling member in contact with an...
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5548257 |
Vacuum-barrier window for wide-bandwidth high-power microwave transmission
A vacuum output window comprises a planar dielectric material with identical systems of parallel ridges and valleys formed in opposite surfaces. The valleys in each surface neck together along...
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5495218 |
Microwave waveguide seal assembly
A microwave waveguide is presented which includes a gas tight seal which provides pressure isolation between two portions of the waveguide. In accordance with an important feature of this...
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5488336 |
Broadband waveguide pressure window
A broad passband pressure barrier arrangement is provided for insertion in circular waveguide between a source and a receiver of radio frequency (RF) energy with a spatially circumferential...
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5471182 |
Broadband pressure barrier for circular waveguide
A broad passband pressure barrier arrangement is provided for insertion in circular waveguide between a source and a receiver of radio frequency (RF) energy with a spatially circumferential...
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5466295 |
ECR plasma generation apparatus and methods
A plurality of magnetized elements form a continuous surface proximate to a waveguide opening, sufficient to satisfy electron cyclotron resonance plasma generation. With the elements similarly...
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5455085 |
Double pane microwave window
A window has two plates of radiation-propagative material, such as two plates of glass or two films of transparent dimensionally-stable plastic which serve as window panes through which...
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5450047 |
High power waveguide window and waveguide assembly
An improved waveguide window (10) for use in high power waveguide applications. The window (10) preferably includes a thin sheet (12) of dielectric material having a first planar face (14), a...
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5400004 |
Distributed window for large diameter waveguides
A distributed microwave window couples microwave power in the HE11 mode between a first large diameter waveguide and a second large diameter waveguide, while providing a physical barrier between...
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5279156 |
Distance measuring device especially for measuring the fill level in industrial tanks
A distance measuring device for measuring the fill level in industrial tanks, which includes electronic transmitting- and receiving elements for short wave electromagnetic waves, such as...
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5262743 |
Microwave process seal
A microwave process seal and method is provided for use, for example, in the detection of ullage level and flow in a vessel or conduit by detecting the presence of a solid or liquid material in...
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5243311 |
Window comprising resin/diamond layer
A window for transmitting radiation of 20 microns or longer comprises a layer supported around its periphery by a frame. The layer comprises a first major surface on one side capable of receiving...
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5200722 |
Microwave window assembly
A microwave window assembly for transmitting high power microwave energy from microwave propagating means into the interior of a chamber and including first and second windows formed of a...
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5175523 |
Adjustable coaxial double-disk fluid cooled waveguide window with mean for preventing window bowing
A gyrotron microwave output window made of a pair of centrally coupled dielectric disks in which the displacement between the windows is tunable by adjusting means external to the waveguide and in...
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5136272 |
Ceramic component having a plurality of improved properties and process for the production of such a component
The process of the invention consists in co-sintering a fine-grain alumina (8,9,10) with a metallizable alumina (11,12). The component obtained has dielectric properties which are homogeneous in...
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