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| Number | Title | Issue Date |
| 7474176 | Sliding screw arrangement The present invention relates to a sliding screw arrangement (14) for transformation of the rotational movement of a threaded axis (13) into a linear movement of the sliding screw providing minimized tolerances for variations of the screw position in b... | 01/06/2009 |
| 7352264 | Electronically tunable dielectric resonator circuits In order to permit electronic tuning of the frequency of a circuit including dielectric resonators, such as a dielectric resonator filter, tuning plates are employed adjacent the individual dielectric resonators. The tuning plates comprises two separate conductive p... | 04/01/2008 |
| 7327210 | Band agile filter A microwave filter and method for remotely tuning a microwave filter from one sub-band to another sub-band using metallic rings to adjust the capacitance or inductance of the resonator. In adjusting the capacitance, a plurality of metallic rings are disposed in the ... | 02/05/2008 |
| 7310031 | Dielectric resonators and circuits made therefrom A dielectric resonator having variable cross-section, preferably varying monotonically, and, most preferably, the resonator being in the shape of a truncated cone. Such shapes displace the H11 mode from the TE mode in the longitudinal direction of the con... | 12/18/2007 |
| 7268550 | Antenna element and antenna arrangement for magnetic resonance applications An antenna element for magnetic resonance applications has at least one sub-section that extends along a section axis and is adjacent to an auxiliary circuit. The antenna element has a coupling section and an auxiliary circuit section that is inductively coupled to ... | 09/11/2007 |
| 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 |
| 7224248 | Ceramic loaded temperature compensating tunable cavity filter A high Q RF cavity resonator loaded with a ceramic disc, the resonator comprising an inner conductive post having a length less than a quarter wavelength. The resonance frequency of the resonator is tunable by changing a distance between a) an outer plate and b) a c... | 05/29/2007 |
| 7210332 | Mechanical resonator A sensor and methods for making and using the same in which a mechanical resonator is employed, comprising a resonator portion for resonating in a fluid without the substantial generation of acoustic waves; and an electrical connection between the resonator portion ... | 05/01/2007 |
| 7183881 | Cross-coupled dielectric resonator circuit A cross-coupled dielectric resonator circuit. Resonator circuits in accordance with the invention may be used to build low-loss compact filters, oscillators, and other circuits, particularly microwave circuits. The resonators are arranged relatively to each other wi... | 02/27/2007 |
| 7105787 | Reverberating adaptive microwave-stirred exposure system A method and apparatus for adaptively maintaining the power-frequency spectrum in a reverberation chamber. The invention is thus capable of maintaining a relatively constant power-frequency spectrum in the chamber even when a device under examination is placed into ... | 09/12/2006 |
| 7059765 | Temperature measuring apparatus and related improvements An apparatus for measuring the temperature of an object. The apparatus includes a device for establishing a standing wave pattern or radiation emanating from the object and a coupling device for coupling the radiation to a detector, such as a measuring radiometer. | 06/13/2006 |
| 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 |
| 7005951 | Screw-fixing implement A screw-fixing implement which is low in cost and has a high reliability, a resonator device having the screw-fixing implement and having a characteristic adjusting function, a filter, an oscillator, and a communication device each containing the resonator device, a... | 02/28/2006 |
| 6972728 | Horn antenna with dynamically variable geometry An electromagnetic horn antenna (100). The antenna can include a horn housing having a throat portion (102), a tapered portion (106, 104) and an aperture 108. At least one cavity structure (142, 144, 138) can be provided within the... | 12/06/2005 |
| 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 |
| 6930572 | Continuously tunable resonant cavity A tunable resonant system comprising a resonant cavity apparatus including at least one cavity wall (150, 151, 152, 153, 154, 155) made of a conductive material and arranged to form a resonant cavity (102), and a method for varying the resonant charact... | 08/16/2005 |
| 6876278 | Tunable resonant cavity A tunable resonant system (100) and a method for a varying the resonant characteristics of a resonant cavity (102). The resonant cavity (102) is enclosed by a conductive material that has at least one aperture (104) for coupling the reson... | 04/05/2005 |
| 6836198 | Adjustable capacitive coupling structure A cavity filter which provides for fine tuning of the bandwidth of the filter. The filter provides for both capacitive cross-coupling and inductive coupling between physically adjacent but electrically non-adjacent resonators in the filter. The isolation of the filt... | 12/28/2004 |
| 6801104 | Electronically tunable combline filters tuned by tunable dielectric capacitors A voltage-controlled tunable filter includes at least two cavity resonators electrically coupled to each other. A voltage tunable dielectric capacitor is positioned within each of the resonators. Connections are provided for applying a control voltage to the voltage... | 10/05/2004 |
| 6797929 | Cylindrical reactor with an extended focal region An elliptical exposure chamber has an extended focal region. A plurality of cylindrical reactors (25) form the extended focal region. Reducing the size of the opening (58) to each reactor (25) reduces the amount of energy reflected and increases... | 09/28/2004 |
| 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 |
| 6683516 | Voltage tunable laminated dielectric materials for microwave applications such as a tunable cavity A tunable dielectric structure includes a first layer of dielectric material, a second layer of dielectric material positioned adjacent to the first layer of dielectric material, with the second layer of dielectric material having a dielectric constant th... | 01/27/2004 |
| 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 |
| 6657515 | Tuning mechanism for a superconducting radio frequency particle accelerator cavity A tuning mechanism for a superconducting radio frequency particle accelerator cavity, wherein the cavity comprises a number of axially aligned cells held by a frame, with at least one active cell that is axially stretchable to tune the resonant frequency ... | 12/02/2003 |
| 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 |
| 6624583 | Method and apparatus for plasma treating a chemical species A method of treating a first chemical species in a gas using a plasma, the method including the steps of providing an array of micro-scale cavity discharge devices capable of sustaining the plasma where the first chemical species is capable of flowing pro... | 09/23/2003 |
| 6617945 | Filter with an electrically tunable resonator A filter or multicoupler has at least one resonator which can be electronically tuned by a tuning device, has at least one tuning element such as a tuning capacitor, a switching element for selectively connecting the tuning element electronically to the r... | 09/09/2003 |
| 6600394 | Turnable, temperature stable dielectric loaded cavity resonator and filter A tunable, temperature compensated, thermal and mechanical stable, dielectric loaded cavity resonator and filter assembly has high unloaded Q, wide frequency tuning range and simple structure suitable for high volume production. The cavity resonator consi... | 07/29/2003 |
| 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 |
| 6469286 | Variable-impedance unit, microwave device using the unit, and microwave heater A compact and highly controllable impedance-varying-unit, a microwave device using the same unit, and a high-frequency-heating appliance using the same unit are provided. The impedance varying unit includes a rectangular waveguide-section as a main body m... | 10/22/2002 |
| 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 |
| 6414572 | Dielectric resonator having a frequency tuning member spirally engaged with the cavity A dielectric resonator of the invention includes a cavity having a first threaded hole; a dielectric block provided in the cavity; a coupling device coupled with an electromagnetic field produced in the cavity; a frequency tuning member having a screw por... | 07/02/2002 |
| 6356172 | Resonator structure embedded in mechanical structure An assembly for supporting a substrate of an integrated circuit and forming a cavity resonator with the substrate. The assembly includes a baseplate in which a cavity for the cavity resonator is integrally formed. A substrate is mounted over the cavity re... | 03/12/2002 |
| 6297715 | General response dual-mode, dielectric resonator loaded cavity filter A ceramic resonator element having high Q, high dielectric constant, and a low temperature coefficient of resonant frequency is enclosed within a cavity to form a composite microwave resonator having reduced dimensions and weight as compared to a simple c... | 10/02/2001 |
| 6131386 | Single mode resonant cavity A single mode resonant cavity is adapted to absorb energy via a single excitation mode in a plurality of overlapping absorption bands having different respective resonant frequencies, thereby increasing the resonant bandwidth of the cavity. The high Q-fac... | 10/17/2000 |
| 6111484 | Filter tuning device and tuning plate including a number of such devices The present invention relates to a tuning device in radio filter equipment for mobile telephony in which one or more cavities in the equipment should be tuned to the right frequency. The invention also relates to a tuning plate including a number of such ... | 08/29/2000 |
| 5798676 | Dual-mode dielectric resonator bandstop filter An electromagnetic bandstop filter comprises a microwave circuit, at least one microwave resonator, coupling means that couples electromagnetic energy to and from the microwave resonator, and an impedance transformer coupled to, and in series with, the co... | 08/25/1998 |
| 5739731 | 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... | 04/14/1998 |
| 5714920 | Dielectrically loaded cavity resonator A method of producing a microwave resonator comprising a cavity (50) defined, at least in part, by a generally cylindrical wall (64) having an electrically conductive inner surface and containing a generally cylindrical piece of low loss dielectric materi... | 02/03/1998 |
