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| Number | Title | Issue Date |
| 7227434 | Tuning screw assembly The present invention relates to a tuning screw assembly comprising a sleeve (100) with internal threads for engaging a tuning screw (200) having external threads. The sleeve comprises a first threaded portion (32) which is axially displaced in ... | 06/05/2007 |
| 7034266 | Tunable microwave apparatus Disclosed is a method and apparatus for tuning a microwave apparatus. The chamber volume of the microwave apparatus can be changed by moving a flexible portion of a flexible wall while a perimeter portion of the flexible wall remains fixed. ... | 04/25/2006 |
| 7012488 | Cavity resonator having an adjustable resonance frequency The aim of the invention is to provide a cavity resonator that has a great variable frequency area of a resonance frequency and is provided with good quality. Such a cavity resonator is provided with a round cross-section. The H11n in wave mode acting as the resonan... | 03/14/2006 |
| 6937119 | High frequency apparatus A tuning door is fabricated for a resonant cavity of a high frequency apparatus. Contact fingers are formed around the edge of a conductive plate. The plate is then fixed to a support by, for example, double sided adhesive tape. The conductive plate is part of the i... | 08/30/2005 |
| 6608533 | Matching circuit chip, filter with matching circuit, duplexer and cellular phone The present matching circuit chip has an integrated shape comprising a first transmission line, a second transmission line and a third transmission line, wherein one end of the first transmission line, one end of the second transmission line and one end o... | 08/19/2003 |
| 6118356 | Microwave cavity having a removable end wall A plurality of end caps engagable with a microwave cavity each have an underside configured differently to cause the microwave cavity to have different electrical responses depending on which end cap engages the microwave cavity. A microwave device includ... | 09/12/2000 |
| 5977849 | Variable topography electromagnetic wave tuning device, and operating method An electromagnetic wave component uses one or more diaphragms secured to the interior of a waveguide structure to tune its resonant frequency, with each diaphragm engaged by one or more adjustment members that deform it. The adjustment members are prefera... | 11/02/1999 |
| 5818314 | Tunable electromagnetic wave resonant filter There is disclosed a radio frequency device having a housing, a cover disposed atop the housing, and a rod. A fastener such as a nut is attached to the rod and engages the cover. When the fastener is rotated, the cover moves with respect to the housing, t... | 10/06/1998 |
| 5691602 | Multiple cavity klystron A multiplecavity klystron, which has a wide range of frequencies in which it can be used and is capable of operating at high frequencies, comprises first and second resonant cavities. At least one of resonant frequencies in TEM and TE11 modes of the secon... | 11/25/1997 |
| 5646585 | Tunable cavity resonator for a multi-cavity klystron A simply structured cavity resonator for a multi-cavity klystron which can position a movable tuning element at a location where the element should be located with respect to a widthwise direction of the element. The cavity resonator of the multi-cavity k... | 07/08/1997 |
| 5552583 | Microwave applicator device for continuous heat treatment of elongate products A microwave applicator device for continuous heat treatment of elongate products comprises an applicator housing that defines a generally rectangular waveguide cavity and at least one excitation system for exciting the cavity with microwaves propagating i... | 09/03/1996 |
| 5329255 | Thermally compensating microwave cavity A thermally compensating microwave cavity is provided. An active device that generates microwaves is disposed within this microwave cavity such that microwaves are emitted within the cavity. A first portion of these microwaves travels in one direction fro... | 07/12/1994 |
| 5278375 | Microwave applicator device for the treatment of sheet or lap products A microwave applicator device for the treatment of sheet or lap products comprising a housing defining a parallelepipedal waveguide cavity with dimensions a×b×L in an orthogonal coordinate system Ox, Oy, Oz, the housing being aligned along Oz and provid... | 01/11/1994 |
| 5276409 | Autotuning combiner stabilized against frequency drift An autotuning combiner particularly for use in combining signals for radio telephony transmission. The combiner has a series of filter cavities each with an adjuster for fine-tuning the cavity to an input carrier signal. The combiner cavities are stabiliz... | 01/04/1994 |
| 5243310 | Three point lead screw positioning apparatus for a cavity tuning plate Three lead screws are provided for adjusting the position of a traversing plate. Each of the three lead screws is threaded through a collar that is press fitted through the center of one of three pinion gears. A sun gear meshes with all three pinion gears... | 09/07/1993 |
| 5159290 | Composite wave closure means for microwave containing regions Apparatus is disclosed in which a ring of microwave amplifiers are spaced around the top of a cavity closure structure containing upper and lower splitter and combiner cavities. The inputs and outputs of the amplifiers are connected by, respectively, inpu... | 10/27/1992 |
| 5119051 | Cavity-tuning coaxial coupler unit A coaxial coupler unit has an outer conductor fastened to the outside of a first rigid metallic wall on one side of a microwave cavity, and the unit also has an inner conductor having at its front end an axially-fixed, angularly-turnable pin axially exten... | 06/02/1992 |
| 4792772 | Microwave apparatus An apparatus 10 with gears (22a, 22b, 22c, 25) for adjusting the position of a plate (13) in a cavity (12) and a rack (51) and gear (53) for moving a probe (15) into and out of the cavity is described. The apparatus includes knobs (34, 55) for controlling... | 12/20/1988 |
| 4706053 | Microwave metallic cavity A microwave metallic cavity, whose resonating frequency is stabilized versus operating temperature variations. Stabilization is achieved by implementing the cavity with a conical base having a thickness and a coefficient of linear expansion smaller than t... | 11/10/1987 |
| 4673894 | Oscillator coupled through cylindrical cavity for generating low noise microwaves A microwave oscillator having very low phase noise characteristics has a reflection oscillator circuit coupled to a right-circular cylindrical resonant cavity designed to operate in the TE011 mode. The resonator length L and inner diameter D ar... | 06/16/1987 |
| 4642523 | Precision tunable resonant microwave cavity A coaxial probe extends into a microwave cavity through a tube. One end of the tube is retained in a spherical joint attached in the cavity wall. This allows the coaxial probe to be pivotally rotated. The coaxial probe is slideable within the tube thus al... | 02/10/1987 |
| 4527094 | Altitude compensation for frequency agile magnetron A frequency agile magnetron employs an altitude compensation vacuum envelope external to the vacuum envelope of the magnetron. The tuning assembly of the magnetron includes a tuning plunger coupled through a first bellows assembly to one end of a tuning s... | 07/02/1985 |
| 4446463 | Coaxial waveguide commutation feed network for use with a scanning circular phased array antenna A dominant TEM mode and a pair of spatially orthogonal TE11 modes suitably excited at the input ports of a coaxial waveguide commutator portion of a coaxial waveguide commutation feed network are employed to generate a commutatable low-sidelobe... | 05/01/1984 |
| 4335365 | Temperature stabilized and frequency adjustable microwave cavities The invention concerns temperature stabilized resonant microwave cavities not requiring hermetic sealing and easy to be frequency adjusted, which essentially consist of a hollow body, a tuning screw, a plug and auxiliary lateral devices for coupling to th... | 06/15/1982 |
| 4259561 | Microwave applicator The invention provides a microwave feeder or applicator, that is to say a resonant chamber for coupling to a source of microwaves, arranged for the microwave treatment of a sample of material, comprising two main conductive walls extending parallel to a c... | 03/31/1981 |
| 4243961 | Apparatus for selecting the resonance frequency of a microwave device comprising a plurality of cavities A microwave apparatus comprising n aligned cavities 1 in each of which one of the walls is formed by a plunger 2 integral with a shaft 3. The n shafts 3 bear against n aligned stops 5. Several lines of n stops 5, against which the shafts 3 successively be... | 01/06/1981 |
| 3940721 | Cavity resonator having a variable resonant frequency A cavity resonator having adjustably tunable resonant frequency in which tuning of the resonant frequency is carried out by means of a movable side plate, characterized in that contactor pieces supported by the edges of said movable side plate for realizi... | 02/24/1976 |
