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| Number | Title | Issue Date |
| 7982560 | Cavity resonator having a re-entrant stub on a printed circuit board with cut-out areas The invention is related to cavity resonators, a method for producing a cavity resonator, and a band pass filter system comprising cavity resonators. A cavity resonator (100) according to the invention comprises a printed circuit-board (10); an upper e... | 07/19/2011 |
| 7830229 | Coaxial resonator including a metallized area with interdigitated fingers A coaxial resonator includes a core of dielectric material. A through-hole defines respective openings in the top and bottom surfaces of the core. The top surface further defines at least first and second metallized regions surrounding the through-hole opening and a... | 11/09/2010 |
| 7439823 | Electromechanical filter An object is to provide an electromechanical filter which can define a vibration mode so that a vibrator can be excited only in a desired vibration mode, that is, a filter which can suppress any vibration mode other than a desired vibration mode. The electromechanic... | 10/21/2008 |
| 7400221 | Semi-coaxial cavity resonator, filter using the same, and communication apparatus using the same In a semi-coaxial cavity resonator in which an inner conductor is fixed to an outer conductor with a screw, an inner cavity where the inner conductor does not engage with the screw is provided to extend from a bearing surface of the inner conductor to a region of an... | 07/15/2008 |
| 7397332 | High-frequency dielectric ceramic composition, dielectric resonator, dielectric filter, dielectric duplexer, and communication apparatus A high-frequency dielectric ceramic composition that has excellent dielectric properties, such as a large εr, a large Q-value, and a small absolute value of τf, even in a high-frequency region, such as a microwave region or a millimeter wave ... | 07/08/2008 |
| 7360308 | Coaxial via structure for optimizing signal transmission in multiple layer electronic device carriers A coaxial via structure is adapted to transmit high speed signals or high intensity current through conductive layers of an electronic device carrier. The coaxial via structure comprises a central conductive track and an external conductive track separated by a diel... | 04/22/2008 |
| 7358835 | 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... | 04/15/2008 |
| 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 |
| 7352263 | Method and mechanism for tuning dielectric resonator circuits The invention comprises a technique and associated mechanisms by which dielectric resonator circuits, such as filters, can be tuned in both frequency, bandwidth or both without the need for irises, tuning screws and/or tuning plates. In accordance with the invention... | 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 |
| 7327143 | Miniaturized detection coil former for NMR spectroscopy One exemplary miniaturized detection coil former for NMR spectroscopy includes a macroporous carrier material having a first surface and a second surface situated opposite thereto, as well as a multiplicity of discrete pores formed in the carrier material and having... | 02/05/2008 |
| 7321280 | Transmission line and high frequency cavity resonator using such transmission lines, particularly for the nuclear magnetic resonance Transmission line and high frequency cavity resonator using such transmission lines, particularly for Nuclear Magnetic Resonance. This transmission line comprises a straight and segmented (1) bar, these segments being (or being made) electrically condu... | 01/22/2008 |
| 7308749 | Production method for dielectric resonator device A method of forming a dielectric resonator from an inner-conductor-formed hole that has a substantially rectangular or substantially elliptical cross section in a direction perpendicular to the depth direction thereof, by placing a rotary cutting disk in contact wit... | 12/18/2007 |
| 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 |
| 7283020 | Signal extracting arrangement A base station in a mobile communication network, includes at least one transmission line for transmitting a radio frequency signal. Each transmission line includes a coupling hole. A two-port coupled line includes one or more coupling holes. Each transmission line ... | 10/16/2007 |
| 7268554 | RF coil for imaging system An RF coil suitable for use in imaging systems is provided which coil has a dielectric filled cavity formed by a surrounding conducting enclosure, the conducting enclosure preferably being patterned to form continuous electrical paths around the cavity, each of whic... | 09/11/2007 |
| 7263392 | Superconductor transmission line having slits of less than λ /4 A transmission line is provided which has a low loss and can flow large current. A superconductor transmission line has: an internal conductor; and an external conductor surrounding the internal conductor, made of oxide superconductor and having four planes, which f... | 08/28/2007 |
| 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 |
| 7215083 | Microwave generator Microwave generator having two electrodes which are provided in a housing and are separated via a spark gap which breaks down when a high voltage is applied in order to emit microwaves, in which the first electrode (6) is in the form of a pot, and the other, ... | 05/08/2007 |
| 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 |
| 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 |
| 7177515 | Surface plasmon devices A device including an input port configured to receive an input signal is described. The device also includes an output port and a structure, which structure includes a tunneling junction connected with the input port and the output port. The tunneling junction is c... | 02/13/2007 |
| 7142837 | Multiple-section bandpass filter for broadcast communications A multiple-section bandpass filter for broadcast communications includes adjacent waveguide segments with a perpendicular connecting segment between them to form a U-shaped signal path. The waveguide cavities of the segments may be extruded and rectangular in cross ... | 11/28/2006 |
| 7135917 | Left-handed nonlinear transmission line media A left-handed nonlinear transmission line system has multiple nonlinear capacitors connected in series between input and output terminals and multiple inductances connected in parallel between the nonlinear capacitors and a return conductor extending between the inp... | 11/14/2006 |
| 7123884 | RF switch A radio frequency (RF) switch which is used in an RF unit of a communication apparatus and which has less of an insertion loss during a transmission. A strip line disposed in the RF switch is formed by combining first and second strip lines having different values o... | 10/17/2006 |
| 7116186 | Dual-band bandpass filter A dual-band bandpass filter having a first pass band and a second pass band respectively corresponding to a first frequency and a second frequency. The filter includes a first pair of resonators, a second pair of resonators and a first coupling element. The first pa... | 10/03/2006 |
| 7106152 | Dielectric resonator, dielectric filter, and method of supporting dielectric resonance element A dielectric resonator has a metallic casing having an opening, a metallic cover which covers the opening, and a dielectric resonance element having a pair of flat surfaces formed opposite from each other, one of the pair of flat surfaces being brought into contact ... | 09/12/2006 |
| 7096565 | Flanged inner conductor coaxial resonators A method and apparatus for making an inner conductor from a conductive body integrally forms a flange on one end of the conductive body. The flange is formed integral to the conductive body by flaring the end of the conductive body. The size and shape of the flange ... | 08/29/2006 |
| 7095300 | Band eliminate filter and communication apparatus A coaxial capacitor is inserted in a coaxial cable in a predetermined position. A housing is provided as a ground conductor path in order to establish conduction between two external conductors in portions of the coaxial cable which are separated by the inserted coa... | 08/22/2006 |
| 7091424 | Coaxial via structure for optimizing signal transmission in multiple layer electronic device carriers A coaxial via structure is adapted to transmit high speed signals or high intensity current through conductive layers of an electronic device carrier. The coaxial via structure comprises a central conductive track and an external conductive track separated by a diel... | 08/15/2006 |
| 7088203 | Slotted dielectric resonators and circuits with slotted dielectric resonators In accordance with the principles of the present invention, a resonator puck is provided with one or more vertical and/or horizontal, radial slits that improve the quality factor, Q, of circuits constructed from the resonators. Preferably, the slits are very narrow ... | 08/08/2006 |
| 7075388 | Ceramic RF triplexer A monoblock ceramic triplexer for connection to an antenna, a transmitter, a receiver and a GPS receiver is described. The triplexer includes a solid, monolithic core of dielectric material defining a plurality of through-holes extending between top and bottom surfa... | 07/11/2006 |
| 7067839 | Tuning circuit with distributed tunnel junction elements and superconductor integrated circuit comprising the tuning circuit It is an object to provide a tuning circuit which has large fractional frequency band width, for example frequency band of the return loss of less than −10 dB. The tuning circuit is composed of a superconductor microstrip lines, a superconductor distributed tunnel... | 06/27/2006 |
| 7068128 | Compact combline resonator and filter A compact combline resonator and filter. The annular radius of inductive posts are modulated along the length of the inductive post to establish a desired inductive value for a series inductive capacitive resonator. The filter has a waveguide channel with an input p... | 06/27/2006 |
| 7057480 | 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... | 06/06/2006 |
| 7053735 | Waveguide in multilayer structures and resonator formed therefrom The idea of the invention is to fabricate a multilayer coaxial transmission line into a printed circuit. The outermost conductor is fabricated by conductive strips in different layers, using conductive via posts in isolation layers connecting the strips. The innermo... | 05/30/2006 |
| 6930571 | Dielectric filter, dielectric duplexer, and communication apparatus A dielectric filter includes a dielectric block having a plurality of through holes; an outer conductor provided on an outer surface of the dielectric block; and inner conductors provided on inner surfaces of the plurality of through holes. The dielectric filter als... | 08/16/2005 |
| 6904666 | Method of manufacturing microwave filter components and microwave filter components formed thereby A simplified method for forming passive microwave components, such as a filter, and passive microwave components formed by the method. The method includes forming a ceramic insert having a plurality of resonator regions and then die casting an outer casing of a cond... | 06/14/2005 |
| 6901645 | Wheeled vehicle kingpin bolt removing tool A wheeled vehicle kingpin bolt-replacement tool is disclosed manufactured from a rigid material, which facilitates bolt removal. The tool allows a baseplate to be inserted along two perpendicular intersection channels. A first channel engages the baseplate to preven... | 06/07/2005 |
| 6894587 | Coaxial resonator, filter, duplexer, and communication device A coaxial resonator according to an embodiment of the invention includes a tubular dielectric block, an inner conductor having a thin-film, multi-layer electrode structure, which is formed on an outer surface of a cylindrical shaft received in the hole of the tubula... | 05/17/2005 |
