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WO/2002/009228A1 |
The dielectric loaded cavity for high frequency filters consists of a metal container housing a dielectric block held in position by supporting plates, that also sustains coupling and tuning elements. This invention provides broadband fi...
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WO/2002/007251A1 |
A circuit with non-radiative delectric waveguides held between two parallel metal plates which are multi-layered. Since the circuit has different heights of spacers between the plates owing to multiple layers, different sizes of non-radi...
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WO/2002/006686A1 |
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 displ...
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WO/2002/005377A1 |
A dielectric resonator device, wherein the upper and lower opening surfaces of ceramic cavities (1a) and (1b) having opening surfaces on the upper and lower sides thereof and dielectric cores (2a) and (2b) formed therein integrally with ...
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WO/2002/001578A1 |
The disclosed invention relates to Bi¿2?0¿3?-ZnO-Ta¿2?0¿5? dielectric compounds and compositions, and to their manufacture. The compounds of the invention have outstanding K, Q, TCF, and TCC. Examples of these properties include a K ...
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WO/2001/099223A2 |
A method of making a low-loss electromagnetic wave resonator structure. The method includes providing a resonator structure, the resonator structure including a confining device and a surrounding medium. The resonator structure supportin...
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WO/2001/099224A1 |
Electronically tunable thick film composites of tunable phases such as barium strontium titanate and additional dielectric oxide phases are disclosed. The composite thick films can contain multiple phases such as barium strontium titanat...
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WO2001043224B1 |
A dielectric resonator system (100) having a dielectric element (102) and a purified alumina attachment assembly (106) both housed within a metallic resonant casing (104). Attachment assembly (106) is at least 99.5% pure alumina. Attachm...
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WO/2001/097320A2 |
An electromagnetic resonator and a frequency filter. The resonator is composed of an electromagnetic waveguiding structure which is twisted along its axis while being bent back and the two ends connected to provide a continuous path to t...
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WO/2001/095684A1 |
The idea of the invention is to form a cavity in a multilayer substrate at the point of the structure to be trimmed. This enables the embedding of tolerance critical components inside substrates, such as printed circuit boards, modules, ...
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WO/2001/092182A1 |
The invention provides a dielectric ceramic composite that can be burnt at a low temperature. The dielectric ceramic composite in accordance with the invention is produced by means of adding eight kinds of chemical compounds of ZnO, SiOÂ...
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WO/2001/084572A2 |
This invention provides tunable devices incorporating the dielectric CaCu¿3?Ti¿4?O¿12?. CaCu¿3?Ti¿4?O¿12? is especially useful in tunable devices such as phase shifters, matching networks, oscillators, filters, resonators, and ante...
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WO2000026149A9 |
Embedded, coupled, shaped waveguide resonators having conductive walls sandwiched between two fired green tape stacks, said conductive walls having apertures therein whose size and location determine the degree of coupling. These wavegui...
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WO/2001/081269A1 |
A low loss high-frequency dielectric ceramic composition for sintering at a low temperature and method of manufacturing the same which is characterized in that excellent dielectric properties such as a much lower sintering temperature an...
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WO/2001/076004A1 |
The present invention relates to a coaxial cavity resonator comprising walls delimiting a cavity, and at least one resonator body comprising a conductive rod having a first end being in short circuit relation to a first wall of said cavi...
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WO/2001/069709A1 |
A resonator for use in a radio frequency filter including a substantially planar resonant portion that is substantially elliptical in plan. The resonant portion is mounted on a dielectric substrate. The resonator is configured to operate...
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WO/2001/067543A1 |
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 wave ...
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WO/2001/065632A1 |
The present invention relates to a single-piece centre conductor (15) for an LC-filter, and an LC-filter comprising at least one such centre conductor. The centre conductor comprises a first end section (20) with axially form confining f...
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WO/2001/061850A1 |
A method for characterizing a frequency response of a tunable filter (11) includes the steps of adjusting a tuning means (12) to a first predetermined position; measuring the resonance frequency of the filter (10); temporary storing the ...
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WO/2001/054221A1 |
This invention relates to high frequency electromagnetic circuits, in particular to those made on planar or quasi-planar substrates, where the circuit is patterned on a metallic or superconducting film on top of a dielectric in any of th...
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WO/2001/050544A1 |
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 ...
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WO/2001/050591A1 |
The invention relates to a dielectric resonator oscillator, comprising a dielectric resonator (4) which is contained in a resonant cavity (2) for generating a signal that oscillates at a predetermined central frequency. The dimensions of...
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WO/2001/048788A1 |
The invention relates to an arrangement for coupling microwave energy into a plasma CVD coating chamber (3) located in a cavity resonator (1). Said arrangement has a microwave supply part (11) and a microwave guide (9, 1). The invention ...
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WO/2001/048856A1 |
A multi-layer microwave resonator (10) comprises a cavity (12) having an inner surface formed from an electrically conductive material. Pieces (16a - 16e) of dielectric materials stacked on top of each other form a contiguous body (14) t...
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WO/2001/043221A1 |
A dielectric resonator is provided having a cavity, a dielectric half disk resonator structure, and a support for the half disk resonator structure. The support isolates the dielectric half disk resonator structure from walls of the cavi...
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WO/2001/043220A1 |
A ferroelectric layer is deposited or in close proximity to a ferromagnetic ferrite layer to make a microwave substrate on which conductors can be deposited or placed to make devices. The permitivity of the ferroelectric layer can be cha...
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WO/2001/041251A1 |
Described are tunable high temperature superconducting band-pass and band-reject filters having broad tuning frequency range without performance deterioration, as well as high temperature superconducting filter circuits for use therein.
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WO/2001/035485A1 |
A cavity filter (8) includes a cavity (10) constituting an electrically conductive enclosure (12, 14, 16, 18, 20, 22), at least one resonator element (24-1,...24-n) constructed from a dielectric material, and a support (30) constructed f...
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WO/2001/027942A1 |
A new dielectric composition which contains the following elements: lanthanides (Ln), Al, Ca, and, Ti as metal elements and which when these components are expressed in terms of a mole ratio as: a Ln¿2?O¿x?.bAl¿2?O¿3?.cCaO.dTiO¿2? s...
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WO/2001/026178A1 |
In a method of fabricating a tuning door for a resonant cavity, firstly contact fingers (10) are formed around the edge of a conductive plate (9) and the plate (9) is then fixed to a support (12) by, for example, double sided adhesive ta...
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WO/2001/020711A1 |
The invention relates to a method for balancing the bandwidth of a dual-mode filter, consisting of a ring resonator (1) produced by microstrip technology. The method is characterised in that the strip material is removed (1.1, 1.2, 1.3, ...
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WO/2001/017057A1 |
The invention relates to a high-frequency band pass filter assembly, comprising a master resonator and at least one stop-band resonator which is coupled thereto. The aim of the invention is to construct a filter structure in such a way, ...
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WO/2001/015261A1 |
A dielectric resonator (10) comprises a dielectric block having first faces formed by cutting three edges sharing a corner of the dielectric block and second faces adjacent to the first faces. Any of the first faces forms an angle of 45Â...
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WO/2001/013460A1 |
A filter element comprising a conductive element mounted in a conductive housing, the conductive element and conductive housing arranged such that the conductive element is electrically coupled to the conductive housing at one end of the...
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WO/2001/010033A2 |
The invention relates to an analog-to-digital converter for a signal in the gigahertz range, to a millimetric wave receiver comprising the inventive analog-to-digital converter for a signal in the gigahertz range and to a bandpass filter...
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WO/2001/009974A1 |
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, th...
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WO/2000/079640A1 |
The invention relates to a dielectric resonator configuration which uses two dielectric spacers in order to separate the dielectric resonator from two end plates. The resonator configuration provides a very high unloaded Q-factor for a m...
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WO/2000/077882A1 |
The resonator (1) is located on a substrate (2), next to a signal (9), and is surrounded by a housing (4). A tuning element (7, 8) with a conductive plate (8) projects into said housing (4), the distance of said plate from the dielectric...
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WO/2000/077878A1 |
A tuning assembly for tuning the resonant frequency of a dielectric resonator in a cavity. The assembly includes a first resonator body (21) secured to a tubular sleeve portion (33) mounted in an opening (14a) of a mounting wall (14). Th...
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WO/2000/076019A1 |
A temperature-compensated rod resonator, comprising a housing (10) having electrically conducting walls, including at least one electrically conductive resonator rod (14) extending from a bottom wall (11) towards a top wall (13), a tempe...
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WO/2000/070706A1 |
The invention relates to a dielectric filter (1) for microwave signals. Said filter has a resonator body (3) in the shape of a truncated cone or a truncated pyramid.
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WO/2000/064001A1 |
The invention relates to an improved high-frequency coaxial-type filter which consists of one or more resonators or coaxial filters and which is characterised by: an electrically conductive external conductor (1); an electrically conduct...
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WO/2000/064002A1 |
A radiation source for the generation of terahertz electromagnetic radiation comprises a solid state device for the collective propagation of a plurality of charge carriers (electrons or holes) as a substantially two-dimensional charge c...
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WO/2000/062367A1 |
The present invention relates to an electrically tunable device (10), particularly for microwaves. It comprises a carrier substrate (1), conducting means (3A, 3B) and at least one tunable ferroelectric layer (2). Between the conducting m...
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WO/2000/062369A1 |
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 cav...
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WO/2000/055936A1 |
A tunable filter having a fixed substrate (20), first and second plates (10, 15) comprising a high temperature superconducting material is fixed on the substrate. A movable substrate (35) includes a mechanical driver (70) attached to the...
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WO/2000/052782A1 |
A superconducting filter (1) comprises a columnar resonant member (23), one end of which is fixed to an inner wall (22) of a filter case (21) in such a manner that it is not in contact with connectors (27a, 27b) provided for connection w...
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WO2000022691A9 |
A dual operation mode all temperature filter is provided. The dual operation mode filter is provided with a housing defining at least two cavities, an input port and an output port. It is also provided with a non-superconducting resonato...
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WO/2000/038273A1 |
The present invention relates to a fastener means for securing a centre conductor (23) in a cavity filter and for enabling the centre conductor to be secured mechanically in a stable fashion and with good electric contact between itself ...
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WO/2000/038269A1 |
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 sc...
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