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6008755 |
Antenna-shared distributor and transmission and receiving apparatus using same
An antenna-shared distributor is provided such that a non-conductor section is provided in a part of two conductor planes, a dielectric resonator which resonates in the HE111 mode is disposed...
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6002311 |
Dielectric TM mode resonator for RF filters
A TM mode dielectric resonator and a filter comprising such a resonator. The resonator includes metallic walls defining a cavity. A dielectric resonator body is accommodated within the cavity. An...
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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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5990764 |
Dielectric waveguide with at least one dielectric resonator and a plurality of dielectric strips coupled with said at least one resonator
An intersect-line apparatus has two conductor plates. An HE-mode dielectric resonator and four dielectric strips to be coupled to the resonator are disposed between the two conductor plates. The...
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5986616 |
Antenna system for circularly polarized radio waves including antenna means and interface network
An antenna system for a radio communication device, in particular a hand-portable telephone, having communication circuits and to be operating by circularly-polarized radio waves. In the system (1)...
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5987341 |
High-purity polycrystalline alumina cryogenic dielectric
An electromagnetic device, such as a resonator for a filter, incorporates a high-purity polycrystalline alumina. The device may include a superconducting component, which must be cooled...
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5977780 |
Moisture and density sensor
A microwave resonator for connection to an instrument for measuring the density and/or moisture profile in the longitudinal direction of a sample, which microwave resonator has a through-hole (3)...
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5969584 |
Resonating structure providing notch and bandpass filtering
A combination notch/bandpass filter uses first and second adjacently-located cavities in the conductive housing to respectively provide a tunable, first-stage notch filter and a second-stage...
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5969585 |
Method of manufacturing a dielectric resonator device with an opening covered by a printed circuit board and a conductive plate contacting the printed circuit board
A dielectric resonance device includes at least one dielectric resonator having a hollow frame body often called the "cavity" in the art, cross-coupled dielectric pillars in the frame body, and an...
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5965494 |
Tunable resonance device controlled by separate permittivity adjusting electrodes
A first electrically conductive layer whose thickness is equal to or smaller than the skin depth of the radio wave used for communication, a dielectric layer whose permittivity is changed by...
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5963115 |
Ceramic filter having reduced insertion losses
The Application describes a ceramic filter as well as a method of manufacturing same. Such filters comprise at least two stripline resonators in the form of printed metal layers which, during...
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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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5949311 |
Tunable resonators
In a magnetically-tunable resonator, a wave-guiding structure comprising an electromagnetic frequency filter, or component of such a filter, is placed in sufficient proximity with a magnetic...
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5945894 |
Dielectric resonator and filter utilizing a non-radiative dielectric waveguide device
A dielectric resonator capable of resonating at a predetermined resonance frequency has a dielectric substrate, a first electrode formed on a first surface of the dielectric substrate and having a...
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5942959 |
Filter device having a dielectric resonator and a coupling loop with adjustable coupling between the dielectric resonator and the coupling loop
In a filter device, at least one electrically conductive leaf member is mounted on a coupling loop by soldering or the like. By bending the conductive leaf member and adjusting the bending angle,...
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5943005 |
Multilayer dielectric line circuit
A multilayer dielectric line circuit in which a dielectric line circuit has a multilayer structure so as to be easily formed with a small overall size. In one form of the invention, first and...
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5940036 |
Broadband circularly polarized dielectric resonator antenna
A radiating antenna capable of generating or receiving circularly polarized radiation is disclosed using a single feed and a dielectric resonator. The dielectric resonator has slightly differing...
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5932522 |
Superconducting radio-frequency bandstop filter
A bandstop filter contains one or more resonant circuits connected by interconnecting transmission lines. The resonant circuits each have a transmission line connected between two capacitors. One...
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5929727 |
Dielectric resonator, method for manufacturing the same, filter and communication apparatus
A coaxial dielectric resonator which is prismatic and has a through hole in a vertical direction, has such feature that each base side of said prism being no more than 1.6 mm, a diameter of said...
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5923233 |
Resonator resonant frequency tuning
In the present invention, a tuning circuit which includes a controllable switch based on a diode (D1), for example, and which is connected in parallel with a resonator, is located between the low...
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5920244 |
Thin-film multilayered electrode, high-frequency resonator, and high-frequency transmission line
An inexpensive and reliable thin-film multilayered electrode which is formable on a dielectric substrate such as a ceramic substrate. A thin-film multilayered electrode has thin-film conductors and...
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5920243 |
Multi-layer thin-film electrode, for a high-frequency transmission line, resonator, and filter
A multi-layer thin-film electrode comprises thin conductor films and thin dielectric films each being alternately laminated on a dielectric substrate, in which an electro-magnetic field generated...
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5919736 |
Electromagnetic resonant filter
A filter for processing electromagnetic signals has a housing with resonators located inside the cavity of that housing. The resonators, which may be made in part from superconducting material,...
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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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5912472 |
Switchable planar high frequency resonator and filter
A portion of the superconductor in a planar resonator made from that superconductor can be switched into the normally conducting state so that its effective lateral dimensions are changed. The...
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5909159 |
Aperture for coupling in an electromagnetic filter
An electromagnetic filter includes a filter housing containing a first resonant cavity and a second resonant cavity. Resonators are disposed within each of the cavities. The electromagnetic filter...
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5898349 |
Dielectric filter having a plurality of TM multi-mode dielectric resonators
A dielectric filter exhibiting excellent filter characteristics in which the manufacturing cost is reduced by forming coupling loops for dielectric resonators generally in the same shape. First...
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5894248 |
Controlled loop gain YIG tuned oscillator circuit
A YIG oscillator circuit including a closed loop control system which maximizes loop gain during start-up and minimizes loop gain after start-up to minimize gain compression. In one embodiment the...
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5894252 |
Laminated ceramic electronic component with a quadrangular inner conductor and a method for manufacturing the same
A resonator 20 as an example of a laminated ceramic electronic component includes a first dielectric layer 22a. Two long and narrow holes (grooves) 24a and 24b are formed in the first dielectric...
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5889448 |
Resonator mounting mechanism
A resonator mounting mechanism includes a stand having a groove in the head of the stand. A cap, which also has a groove, fits over the top of the stand to hold a resonator in place. The stand has...
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5888942 |
Tunable microwave hairpin-comb superconductive filters for narrow-band applications
Microwave hairpin-comb filters utilize a plurality of hairpin (i.e., folded) half-wavelength microstrip or stripline resonators arranged side-by-side and all with the same orientation. The coupling...
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5886596 |
Radio frequency volume coils for imaging and spectroscopy
An electromagnetic shield for an NMR radio frequency coil designed to resonate at a selected Larmor frequency. The shield includes an electrically conductive layer surrounding the coil. This...
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5886597 |
Circuit structure including RF/wideband resonant vias
A resonant via-type connection between layers of a multilayer support structure having, at predetermined RF frequencies, a very low, effectively short circuit impedance. The resonant vias utilize...
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5886593 |
Dielectric resonator device
A coupling loop, formed by a bendable sheet material, formed by a main plate and two branch plates, with the main plate provided with a phase adjustor. The coupling loop can be easily bent in the...
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5880652 |
Stripline filter with stripline resonators of varying distance therebetween
A stripline filter is disclosed having two stripline resonators which are mutually coupled. In order to be able to influence the type of coupling, such as inductive, capacitive or a combination...
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5880650 |
Dielectric resonator for a microwave filter, and a filter including such a resonator
A multimode composite resonator, in particular for a microwave filter, includes a resonant cavity, a dielectric resonator element disposed inside the cavity, a tuning element for each mode and a...
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5874870 |
Dielectric resonator device with an opening covered by a printed circuit board and a conductive plate contacting the printed circuit board
A dielectric resonance device includes at least one dielectric resonator having a hollow frame body often called the "cavity" in the art, cross-coupled dielectric pillars in the frame body, and an...
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5874922 |
Antenna
An antenna having a high gain, of small-size, and capable of setting the radiation direction of electromagnetic waves in a desired direction. The antenna also allows electromagnetic waves to be...
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5874871 |
Mounting of dielectric resonators
The present invention relates to a mounting device (31) for mounting at least one microwave resonator (20) in a dielectric resonance filter (1). The outer contours of the mounting device (31) are...
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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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5867069 |
Orthogonally mounted substrate based resonators
A resonator includes a substrate to which are attached trimmable capacitance and inductance portions which together with a varactor and transistor form an oscillator circuit. The substrate mounts...
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5859574 |
Dielectric resonator, and microwave filter provided therewith
In a dielectric resonator a dielectric insert is formed so that at least two slots are provided, which are located opposite to one another and extend symmetrically and radially toward a center....
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5847620 |
Dielectric resonator phase shifting frequency discriminator
A dielectric resonator frequency discriminator comprising a microstrip, a single mode dielectric resonator coupled to the microstrip, at least one detector for detecting an RF signal coupled to the...
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5847627 |
Bandstop filter coupling tuner
A resonant structure and filter include a resonant element mounted to the cover of a housing. A transmission line passes through the cover and is connected to a coupling loop. The coupling loop is...
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5843871 |
Electromagnetic filter having a transmission line disposed in a cover of the filter housing
An electromagnetic filter has a unitary filter body defining a number of cavities. A cover for the filter body has several resonators attached to it which are located in the cavities when the cover...
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5841330 |
Series coupled filters where the first filter is a dielectric resonator filter with cross-coupling
A dielectric resonator filter operating in a magnetic dipole mode includes a plurality of dielectric resonators disposed in a plurality of dielectric resonator cavities. A plurality of coupling...
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5838213 |
Electromagnetic filter having side-coupled resonators each located in a plane
An electromagnetic filter includes a plurality of dielectrically-loaded split-ring resonators. The resonators are oriented side-by-side generally within a single plane to achieve side-coupling. The...
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5834981 |
Whispering gallery mode dielectric resonator oscillator circuit
A microwave source has an amplifying transistor capable of operating at microwave frequencies and a frequency selection circuit. The circuit has a whispering mode dielectric resonator and a...
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5825266 |
High Q resonator utilizing planar stuctures
A high Q planar resonator (200) which includes a plurality of interconnected planar runners (209, 211, 213) which decrease in width on multiple layers of substrate material (203). The invention...
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5825263 |
Low radiation balanced microstrip bandpass filter
A low-radiation balanced microstrip bandpass filter is provided. A series of microstrip segments are arranged on the surface of a substrate. The degree of coupling between adjacent pairs of...
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