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RE40890 |
Temperature compensated high power bandpass filter
A bandpass filter makes use of at least one waveguide cavity that is thermally compensated to minimize drift of a resonant frequency of the cavity with thermal expansion of cavity components. The...
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7564328 |
Thermal expansion compensation assemblies
Filter and manifold compensation assemblies for thermal compensation of a filter cavity and a manifold which include at least one a lever element pivotally coupled to the filter or manifold at a...
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7463121 |
Temperature compensating tunable cavity filter
A high Q cavity resonator loaded with a metallic post and a ceramic disc, the resonator comprising an inner conductive post having a length less than a quarter wavelength. The resonance frequency...
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7453337 |
Adjustable temperature compensation system for microwave resonators
A device comprises a microwave resonator having at least one cavity having a predefined resonant frequency. The device also comprises a temperature compensation system that is made from a material...
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7427906 |
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...
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7375605 |
Method and device for compensating the temperature of circular resonators
A method and an arrangement for temperature compensation at circular resonators with dual mode utilization, which includes a material with a low coefficient of thermal expansion and for which the...
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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...
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7250833 |
Method and apparatus for stabilizing the temperature of dielectric-based filters
A dielectric-based filter includes a thermally insulated housing, at least one filter formed from a dielectric material disposed inside the insulated housing, and a temperature maintenance device...
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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...
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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...
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7164222 |
Film bulk acoustic resonator (FBAR) with high thermal conductivity
The specification discloses embodiments of an apparatus comprising a film bulk acoustic resonator (FBAR) filter comprising a piezoelectric membrane having a portion thereof sandwiched between a...
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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...
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6960969 |
Resonant cavity device converting transverse dimensional variations induced by temperature variations into longitudinal dimensional variations
A resonant cavity device comprises a waveguide body having a lateral wall extending in a longitudinal direction, having a first coefficient of thermal expansion, and delimiting a resonant cavity in...
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6897746 |
Phase stable waveguide assembly
A waveguide assembly for operation over a range of temperatures includes a waveguide body and a plurality of restraining strips coupled to the waveguide body. The waveguide body includes a...
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6882252 |
Multi-layer microwave resonator
A multi-layer microwave resonator ( 10 ) comprises a cavity ( 12 ) having an inner surface formed from an electrically conductive material. Pieces ( 16 a -16 e ) of dielectric materials stacked on...
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6801107 |
Vacuum electron device with a photonic bandgap structure and method of use thereof
A vacuum electron device with a photonic bandgap structure that provides the ability to tune the behavior of the device to a particular mode of a plurality of modes of propagation. The photonic...
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6742240 |
Method for attaching resonator part
A method for attaching an additional object to a resonator body. The method includes the steps of (1) placing the additional object in a recess of a pushing part of an extrusion machine; (2)...
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6734766 |
Microwave filter having a temperature compensating element
A microwave filter having a temperature compensating element includes a housing wall structure, a filter lid, a resonator rod, a tuning screw and the temperature compensating element. The housing...
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6727787 |
Method and device for achieving a high-Q microwave resonant cavity
A device for manipulating microwave radiation includes a substrate that defines the shape of a surface for reflecting microwave radiation. The device also includes a metal fitting. The fitting...
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6603374 |
Waveguide resonator device and filter structure provided therewith
For fixing a dielectric insert in a waveguide, clamping bodies are provided which contact the dielectric insert on its outer periphery only tangentially. The dielectric insert is fixed in a wave...
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6600393 |
Temperature-compensated rod resonator
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...
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6580933 |
Frequency stable resonator with temperature compensating layers
A resonator for rf frequencies, especially microwave, in telecommunications systems, with an extremely stable resonant frequency over a desired operating temperature range, of predetermined width...
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6535087 |
Microwave resonator having an external temperature compensator
An externally temperature-compensated microwave resonator comprises a microwave resonator and an external temperature compensator. The microwave resonator is a multi-cavity waveguide. The cavities...
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6529104 |
Temperature compensated high power bandpass filter
A bandpass filter makes use of at least one waveguide cavity that is thermally compensated to minimize drift of a resonant frequency of the cavity with thermal expansion of cavity components. The...
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6529094 |
Dielectric resonance device, dielectric filter, composite dielectric filter device, dielectric duplexer, and communication apparatus
A dielectric resonance device includes a cavity body, a support base disposed inside the cavity body, and a dielectric core supported by the support base. A stepped portion is provided inside the...
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6518858 |
Resonator, filter, duplexer, and communication apparatus
A resonator includes a conductive casing provided with a threaded screw hole, a screw at least partially inserted into the casing, and a fixing member fixing the screw and having a threaded screw...
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6420947 |
Thermal compensation arrangement for microwave filter
This invention discloses an improved thermal compensation arrangement for a microwave filter of the type comprising at least one cavity defined by a metal side wall having a low coefficient of...
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6407651 |
Temperature compensated tunable resonant cavity
A tunable resonant cavity including a cavity housing having top and bottom walls with a post disposed in said cavity extending from die bottom of the cavity toward and spaced from the top. The...
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6362708 |
Dielectric resonator tuning device
A temperature-compensating tuning device is disclosed for tuning and temperature stabilizing the resonant frequency of a dielectric resonator. The tuning device comprises a tuning element in the...
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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...
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6255922 |
Microwave resonator with dielectric tuning body resiliently secured to a movable rod by spring means
A microwave resonator comprising a cavity (7) with a dielectric resonator device (8, 11) including a movable dielectric tuning body (11), which is mechanically coupled to an electrical motor (28)....
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6169468 |
Closed microwave device with externally mounted thermal expansion compensation element
The thermal expansion of a microwave device such as a microwave resonator is partially or completely compensated by an externally mounted thermal expansion element. The microwave device includes a...
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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...
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6002310 |
Resonator cavity end wall assembly
An electromagnetic resonator comprises a waveguide body having a generally tubular side wall and a pair of end wall assemblies. The end wall assembly includes a bowed aluminum plate and an INVAR...
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5990767 |
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...
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5990763 |
Filter having part of a resonator and integral shell extruded from one basic block
The invention relates to a filter and a method for manufacturing a filter. The filter comprises a shell construction with a wall construction and a bottom portion, which form at least one section...
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5986520 |
Filter apparatus with circulator for use in radio apparatus transmitting or receiving systems
Disclosed are a filter apparatus for use in a radio apparatus for multiplex radio communication used when a signal is branched, a jig for arranging dielectrics of the filter apparatus for use in a...
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5949309 |
Dielectric resonator filter configured to filter radio frequency signals in a transmit system
A dielectric resonator filter is configured to suppress emissions in an out-of-band frequency portion of an amplified radio frequency (RF) signal prior to transmission of the RF signal by an...
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5914296 |
Resonators for high power high temperature superconducting devices
TM 0i0 mode (i=1, 2, 3, . . . ) planar high temperature superconductor resonators useful in high temperature superconducting filters, filter banks and multiplexers comprise a shaped high...
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5909160 |
Temperature compensated sapphire resonator for ultrastable oscillator operating at temperatures near 77° Kelvin
A sapphire resonator for an ultrastable oscillator capable of substantial performance improvements over the best available crystal quartz oscillators in a compact cryogenic package is based on a...
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5905419 |
Temperature compensation structure for resonator cavity
For use with various types of devices conditioning radio signals, a temperature compensating cavity resonator includes a practicable and effective assembly. The resonator includes: a cavity...
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5874872 |
Filter
A filter has a shell construction including a connection surface and a bar-like resonator in the shell construction. The bar-like resonator has an initial section having one end region thereof...
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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...
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5754084 |
Temperature-compensated resonator
A temperature-compensated resonator including a control rod disposed in a resonator housing for controlling the center resonance frequency provided by the resonator; a conductor tube secured to the...
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5697090 |
SHF converter
An SHF converter with less change in local oscillation frequency due to change in ambient temperature. The SHF converter is at least equipped with a low noise amplifier 1; a local oscillator...
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5686874 |
Temperature-compensated combiner
A temperature-compensated combiner including a control rod disposed in a combiner housing for controlling a middle frequency; a resonator tube secured to the housing and coaxially disposed around...
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5652556 |
Whispering gallery-type dielectric resonator with increased resonant frequency spacing, improved temperature stability, and reduced microphony
A whispering gallery resonator constructed from a ring of dielectric material that is enclosed in a conducting cylindrical enclosure having a top and bottom. The dimensions of the dielectric ring...
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5589807 |
Multi-mode temperature compensated filters and a method of constructing and compensating therefor
Multi-mode waveguide filters are temperature compensated using dielectric material contained within at least one cavity of a filter. The variation in operating frequency of the filter that would...
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5428326 |
Fast turn-on, temperature stable dielectric resonator oscillator
The dielectric resonator assembly includes a housing having interior surfaces defining a resonant cavity and a dielectric resonator within the cavity. The dielectric resonator is a ceramic having a...
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5428323 |
Device for compensating for temperature-dependent volume changes in a waveguide
A waveguide assembly includes a waveguide having walls defining a cavity; and a frame surrounding the walls of the waveguide. The frame has a coefficient of thermal expansion less than that of the...
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