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| Number | Title | Issue Date |
| 7586393 | Reconfigurable cavity resonator with movable micro-electromechanical elements as tuning elements One inventive aspect relates to a reconfigurable cavity resonator. The resonator comprises a cavity delimited by metallic walls. The resonator further comprises a coupling device for coupling an electromagnetic wave into the cavity. The resonator further comprises a... | 09/08/2009 |
| 7474177 | Efficiency-improved tuning assembly for radio frequency filters and method for forming the same A tuning assembly for a radio frequency is disclosed. The tuning assembly includes: a tuning screw grasping unit integrally formed with a main body of the filter, which includes a tuning screw receiving unit and a fastening member for grasping a tuning screw; and a ... | 01/06/2009 |
| 7439830 | Constant contact pressure PIM interface An interface that provides minimum changes in contact pressure over a thermal range is disclosed. The interface is a mated joint of given material, typically metallic, joined by a mechanical fastener or fasteners. The fastener(s) create contact pressure at the joint... | 10/21/2008 |
| 7271687 | Dielectric resonator having a non-uniform effective dielectric permittivity along an axis of tuner displacement The present invention relates to an improved tuning arrangement to linearise the sensitivity to frequency changes within a certain frequency range in response to tuner displacements relative to a resonator body. The tuning arrangement comprises a tuner and/or resona... | 09/18/2007 |
| 7265326 | Oven enclosure for a broiling oven with microwave capability Oven enclosure with microwave functionality, in which, at a short distance from an enclosure bottom panel, support elements are provided for accommodating a microwave-permeable base plate serving as a food holder. ... | 09/04/2007 |
| 7253708 | Radio frequency cavity resonatory with heat transport apparatus An RF cavity resonator that includes: a resonator chamber for containing an RF field; an RF coupling element coupled to the resonator chamber for introducing the RF field into and extracting the RF field from the resonator chamber; a tuning assembly for causing the ... | 08/07/2007 |
| 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 |
| 7205868 | Variable radio frequency band filter A variable radio frequency band filter capable of varying the resonance frequency band comprises a housing having a support; a number of resonator rods arranged along the longitudinal direction of the housing; at least one tuning rod positioned on top of the resonat... | 04/17/2007 |
| 7202668 | Microstrip coil design for MRI apparatus A microstrip-based RF coil for use in an MRI apparatus constructed to perform human head imaging is provided and includes (a) a cylindrical non-magnetic core module having an outer surface and a longitudinal axis, a cylindrical bore extending through the core module... | 04/10/2007 |
| 7193489 | Radio frequency cavity resonator with heat transport apparatus An RF cavity resonator (400) that includes: a resonator chamber (410) for containing an RF field; an RF coupling element (450, 452) coupled to the resonator chamber for introducing the RF field into and extracting the RF field from the resonator... | 03/20/2007 |
| 7118303 | Internally disposed linear fastener system The present invention provides a linear locking set screw system capable of rapid linear engagement and disengagement. More specifically, the system utilizes a threaded outwardly expandable set screw and an expander member which are constructed and arranged to threa... | 10/10/2006 |
| 7078990 | RF cavity resonator with low passive inter-modulation tuning element A tunable RF cavity resonator having reduced generation of passive inter-modulation, the tunable RF cavity resonator including a cavity body, a fixed tuning post at a first end of the cavity body, a dielectric rod in the fixed tuning post interior space with a first... | 07/18/2006 |
| 7046105 | System and method for threaded plunger assembly A system and method for a plunger assembly includes a tuning slug with a bore in the stem, a tuning screw rotatably disposed in the stem, and a coupling assembly to rotatably secure the tuning screw to the slug. The system and method may also include a locking assem... | 05/16/2006 |
| 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 |
| 6982615 | System and method for threaded plunger assembly A system and method for a plunger assembly includes a tuning slug with a bore in the stem, a tuning screw rotatably disposed in the stem, and a coupling assembly to rotatably secure the tuning screw to the slug. The system and method may also include a locking assem... | 01/03/2006 |
| 6960747 | Microwave applicator system A microwave applicator for heating loads being a waveguide transition between the rectangular TE10 and TE20 modes comprising a TE10 mode section and a TE20 mode section. The location of the load being inside said TE20... | 11/01/2005 |
| 6946933 | Dielectric loaded cavity for high frequency filters The dielectric loaded cavity for high frequency filters consists of a metal container housing s dielectric block held in position by supporting plates, that also sustains coupling and tuning elements. This invention provides broadband filters, small in size and with... | 09/20/2005 |
| 6885265 | Hybrid mode stirred and mode tuned chamber First and second electrically conductive rods are provided inside a shielded electromagnetic test chamber. These rods are energized to radiate electromagnetic energy inside the chamber. The rods are mounted inside the chamber at right angles to one another, the firs... | 04/26/2005 |
| 6822540 | Tuning a cavity filter based on positional data for tuning members A method for tuning a cavity filter is provided. The cavity filter includes a plurality of tuning members. The method includes selecting a stored set of positional values for the tuning members, driving the tuning members of the cavity filter to the stored set of po... | 11/23/2004 |
| 6686818 | Reverberation chamber tuner and shaft with electromagnetic radiation leakage device A tuner (10) for a reverberation chamber is provided comprising a plurality of electrically conductive surfaces (12) attached to each other in a Z-fold configuration. Each lateral edge (15) of the tuner is contacted with a generally planar, laterally posi... | 02/03/2004 |
| 6670869 | Bearing device The invention relates to a bearing device for a spindle, for example, for a dielectric tuner (13) in a cavity filter for electromagnetic waves. The bearing device comprises at least two sprung tongues (27), each of which has a stud (28) with a partially s... | 12/30/2003 |
| 6657214 | Shielded enclosure for testing wireless communication devices A test system having a shielded enclosure and common air interface for testing the transmit and receive functionality of wireless communication devices such as mobile phones. A test system according to the present invention provides improved fault coverag... | 12/02/2003 |
| 6549104 | Tuneable cavity resonator The invention concerns a tunable cavity resonator that comprises a resonator body (2, 3, 4) defining a cavity (5), a tuning plate (28) whose position with respect to the resonator body (2, 3, 4) is modifiable and which influences the resonance frequency (... | 04/15/2003 |
| 6496089 | Device for tuning of a dielectric resonator The present invention relates to a dielectric resonator (20) comprising a dielectric resonator body (30, 40, 50, 60, 70, 80), where the resonator body includes at least two resonant elements (25, 26), wherein by altering the shape of the dielectric resona... | 12/17/2002 |
| 6445267 | Tuner for cavity resonator It is an object of the invention to propose a mechanical gearing for a tuner for cavity resonators, which can be realized and operated in a less expensive version and with long service life and little backlash even at very low temperatures. At the same ti... | 09/03/2002 |
| 6441705 | Temperature self-compensating decoupling filter for high frequency Transceivers The present invention relates to a duplexer set up by two decoupling filters for high frequency transceivers of the temperature self-compensating type and implemented by means of a pair of mechanic bodies (2), each one of which including a plurality of re... | 08/27/2002 |
| 6392509 | Adjustable coupling arrangement for aperture coupled cavity filters An adjustable coupling arrangement for aperture coupled cavity filters. According to the invention, in an electric wall (24) separating two cavities to be coupled in a bandpass filter, provide a cruciform iris (26) comprising a central aperture (27) havin... | 05/21/2002 |
| 6384699 | Tuning arrangement for a cavity filter The present invention relates to an arrangement in a cavity filter for tuning the frequency relationship of the filter or its coupling coefficient factor. The arrangement includes a self-locking screw that can be fitted in the filter cavity, for instance ... | 05/07/2002 |
| 6337611 | Sleeve in a radio frequency filter In a sleeve in a radio frequency filter at least one portion having a lateral dimension being smaller than the diameter of a screw to be threaded through the sleeve is provided. The portion is flexible in a radial direction, so that a screw threaded throu... | 01/08/2002 |
| 6300850 | Temperature compensating cavity bandpass filter A method and apparatus for frequency stabilization of cavity filters of the class including an outer tubular conductor and an inner conductor is effected by supporting the inner conductor of the resonant cavity by an apparatus comprised of a reference col... | 10/09/2001 |
| 6294970 | Bandpass filter A bandpass filter, includes a series of waveguide resonators positioned along a common longitudinal axis so as to define at least a first resonator and a last resonator, whereby adjacent resonators are mechanically linked to one another by a common coupli... | 09/25/2001 |
| 6198366 | Tuning device and method of manufacturing the same A trimming arrangement in a device for tuning and/or adaptation of electromagnetic waves includes at least one trimming screw galvanically connected to the device and at least one bushing portion arranged for inserting and securing the screw. The bushing ... | 03/06/2001 |
| 6160460 | Self-tuning resonant cavity filter In one form of the invention, a resonant cavity filter (50) is disclosed, comprising an input port (210) for receiving an input signal, a dielectric resonator (204) in a cavity, the dielectric resonator operable to receive an input signal from the input p... | 12/12/2000 |
| 6147577 | Tunable ceramic filters The present invention provides improved tunable filters that may provide more accurate tuning and a substantially greater tuning range as compared with conventional filters. Filters according to one or more aspects of the present invention may include imp... | 11/14/2000 |
| 6133810 | Enhanced coaxial cavity filter configured to be tunable while shorted An enhanced tunable coaxial cavity filter that may be tuned while it is shorted. The coaxial cavity filter may have one or more cavities. One or more of the cavities may include a switch for shorting the cavity. When a plurality of cavities are implemente... | 10/17/2000 |
| 6133800 | Subminiature microwave cavity An extremely small and inexpensively manufactured physics package for an atomic frequency standard can be provided with a microwave cavity having non-critical dimensions that is driven in a substantially TEM mode by a lumped LC means, the cavity resonant ... | 10/17/2000 |
| 6104263 | Capacitive tuning screw having a compressible tip A tuning screw with a slotted tip suited for microwave and millimeter wave applications. The slotted tip provides compression upon insertion into the conductive device and the spring character of the screw tip fingers press against the conductor walls ens... | 08/15/2000 |
| 6057748 | Methods of tuning and temperature compensating a variable topography electromagnetic wave device 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... | 05/02/2000 |
| 6049261 | Collapsible pocket for changing the operating frequency of a microwave filter and a filter using the device A device for changing the operating frequency of a microwave filter is mounted in a wall of a cavity of the filter. The device has a bellows that is located inside the cavity. The bellows contains an elongated member that extends outside the cavity to an ... | 04/11/2000 |
| 5986526 | RF microwave bellows tuning post An adjustable RF microwave tuning post for use in an RF cavity is disclosed. It is comprised of a flexible integrally-formed hollow tuning post disposed in the RF cavity. A drive shaft extending internally of the tuning post is provided to vary the dimens... | 11/16/1999 |
