|
Match
|
Document |
Document Title |
|
|
7639101 |
Low-loss tunable radio frequency filter
A tunable RF filter comprises a signal transmission path having an input and output, a plurality of resonant elements disposed along the signal transmission path between the input and output, and a...
|
|
|
7592885 |
Stacked dielectric band-pass filter having a wider passband
A stacked dielectric band-pass filter is disclosed, which enables widening of a passband to a side of a high band of 8 GHz or more. Within a stacked dielectric block, a pair of first λ/4 resonator...
|
|
|
7587229 |
Superconducting tunable filter having a patch resonator pattern tuned by a variable dielectric constant top plate
A superconducting tunable filter comprises a dielectric base plate; a patch-shaped resonator pattern formed of a superconducting material on the dielectric base plate; a top dielectric locally...
|
|
|
7583167 |
High frequency magnetic thin film filter
A layered microstrip device is described, in which at least two layers of different high internal field/high resonance frequency materials serve as the active elements of the device. The device is...
|
|
|
7583168 |
Resonator
An object of the present invention is to provide a resonator capable of constituting a variable filter which has a small size, high mass productivity, low loss and high reproducibility of...
|
|
|
7573356 |
Tunable filter
A tunable filter wherein coupling sections ( 5 1 , 5 2 , 5 3 ) are formed in an input/output line along its lengthwise direction, each coupling section including a gap (G 5 1 , G 5 2 , G 5 3 )...
|
|
|
7567145 |
Superconducting tunable filter
A superconducting tunable filter is disclosed that has a center frequency and a bandwidth able to be adjusted separately. The superconducting tunable filter includes a superconducting resonator...
|
|
|
7528687 |
Filtering device and circuit module
A filtering device is disclosed that can be made compact and has wide-band band-pass characteristics. The filtering device includes a first filtering unit that is composed of a distributed constant...
|
|
|
7512391 |
Self-aligning resonator filter circuit and wideband tuner circuit incorporating same
A self-aligning resonator filter, a self-aligning coupled resonator filter circuit, and a television tuner circuit incorporating the filter and the circuit are disclosed herein. The self-aligning...
|
|
|
7479856 |
High-frequency filter using coplanar line resonator
A high-frequency filter includes a substrate; a ground conductor disposed on one main surface of the substrate and having an opening; a center conductor making up a coplanar line resonator together...
|
|
|
7444129 |
Comb-line wireless filter
A comb-line wireless filter ( 5 ) includes an input end ( 505 a ), an output end ( 505 b ), a first transmission line ( 501 b ), a second and third transmission line ( 501 a, 501 c ) each having a...
|
|
|
7420442 |
Micromachined microwave signal control device and method for making same
A method for fabricating a signal controller, e.g., a filter or a switch, for a coplanar waveguide during the LIGA fabrication process of the waveguide. Both patterns for the waveguide and patterns...
|
|
|
7397329 |
Compact tunable filter and method of operation and manufacture therefore
An embodiment of the present invention provides an apparatus, comprising a tunable filter with a plurality of bond wires connecting voltage tunable dielectric capacitors to an RF ground and serving...
|
|
|
7355494 |
Band-pass filter
A base band of a λa wave generated by a λa/4 resonator is used as it is, a triple wave of the λa wave generated by the resonator is shifted to a low frequency side, and the fundamental wave and...
|
|
|
7352261 |
Production method for chip-form film-forming component
A description is given of a high frequency filter comprising microstrips. The filter comprises at least two resonators ( 16, 18 ) which each have, as frequency-determining elements, a first...
|
|
|
7342468 |
RF filter tuning system and method
An apparatus comprises a radio frequency filter and a dielectric material configured to alter the frequency response of the RF filter, wherein said dielectric material is located in proximity to...
|
|
|
7312676 |
Multilayer band pass filter
A filter comprises a band pass filter that may have a first resonator, a second resonator and a coupling between the first resonator and the second resonator. The coupling may be controlled by at...
|
|
|
7310030 |
Ring millimeter-wave filter having an embedded microstrip structure
A ring millimeter-wave filter is a three-dimensional dual-mode ring filter. The ring millimeter-wave filter makes use of a three-dimensional coupling architecture as the feed of a filter to conquer...
|
|
|
7236068 |
Electronically tunable combine filter with asymmetric response
Electronic filters include an input, an output and a plurality of resonators series coupled between the input and the output. Each of the resonators is coupled to a tunable capacitance. In...
|
|
|
7221238 |
Superconducting filter device
A compact superconducting filter device can easily change a bandwidth and a center frequency without changing a pattern or shape of the filter. A filter pattern is formed on a substrate made of a...
|
|
|
7148770 |
Electrically tunable bandpass filters
A tunable bandpass filter includes at least one resonator having a reactance with a resonant frequency, a ferroelectric film having a dielectric constant with a value that changes with an applied...
|
|
|
7145412 |
Electronic and optical devices and methods of forming these devices
Electronic and optical (or photonic) devices with variable or switchable properties and methods used to form these devices, are disclosed. More specifically, the present invention involves forming...
|
|
|
7117025 |
Varactor tuning for a narrow band filter
A method and apparatus for providing dynamic and remote tuning of a cryo-cooled bandpass filter is disclosed. The device includes resonator element and a voltage sensitive element as part of the...
|
|
|
7113059 |
Variable-frequency high frequency filter
A frequency-variable high frequency filter comprises: a substrate; a ground conductor having an opening provided on one principal surface of the substrate; a center conductor provided in the...
|
|
|
7084722 |
Switched filterbank and method of making the same
An integrated switched filterbank and method of forming an integrated switched filterbank is disclosed. One embodiment includes a switched filterbank that includes an active subassembly, a...
|
|
|
7046104 |
Controlling a time delay line by adding and removing a fluidic dielectric
A variable true time delay line ( 100 ) includes an RF transmission line ( 110 ) and at least one fluidic delay unit ( 108 ). The fluidic delay unit includes a fluidic dielectric contained in a...
|
|
|
6996900 |
Production method for micro-strip filter
A production method for a band-pass micro-strip filter which need not conduct an adjusting process on the central frequency in a pass band based on the frequency characteristics of a filter that...
|
|
|
6975187 |
Continuously tunable waveguide filter
A continuously variable waveguide filter ( 100 ). The variable waveguide filter can include at least one waveguide filter cavity ( 154, 156, 158 ) and a fluid dielectric ( 108 ) having a...
|
|
|
6972636 |
Method of manufacturing a high-frequency switch, a high-frequency switch and an electronic apparatus
A BPF 20 , which is a filter circuit, is formed by arranging a plurality of wiring patterns 21 a, 21 b and 22 a to 22 c on a substrate 10 . Also, a freely movable impedance control rod 26...
|
|
|
6963259 |
High efficiency resonant line
The present invention relates to a circuit for processing radio frequency signals. The resonant circuit includes a substrate. The substrate can be a meta material and can incorporate at least one...
|
|
|
6936559 |
Tunable devices incorporating cacu3ti4o12
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,...
|
|
|
6937117 |
High-frequency device
A high-frequency device comprises a dielectric substrate, a filter element which has a plurality of resonating elements made of a first superconductor film on the dielectric substrate, a dielectric...
|
|
|
6933812 |
Electro-ferromagnetic, tunable electromagnetic band-gap, and bi-anisotropic composite media using wire configurations
An artificial electro-ferromagnetic meta-material demonstrates the design of tunable band-gap and tunable bi-anisotropic materials. The medium is obtained using a composite mixture of dielectric,...
|
|
|
6919783 |
Tunable microwave magnetic devices
A device responsive to an electromagnetic signal includes a conductor for conducting the electromagnetic signal, a magnetic structure disposed proximate the conductor to enable gyromagnetic...
|
|
|
6909344 |
Band switchable filter
A ferro-electric filter and method of tuning same. The filter includes a switch for switching between quarter wave resonator and half wave resonator modes. The filter also includes a ferro-electric...
|
|
|
6895190 |
Switchable bandwidth lowpass filter
A novel transceiver is provided which allow for either a transmitter or receiver to be dynamically switched between two different frequency bands by use of a novel switchable lowpass filter.
|
|
|
6885263 |
Tunable ferro-electric filter
The present invention quantifies and reduces losses in tunable bandpass filters having ferro-electric capacitors. Given a required insertion loss and the quality factor of a resonator, the...
|
|
|
6876877 |
High temperature superconductor tunable filter having a movable substrate controlled by a magnetic actuator
A circuit is provided wherein the electronic properties of the circuit are varied by a magnetic actuator. The circuit includes a fixed substrate and a movable substrate. The magnetic actuator...
|
|
|
6867666 |
Variable filter using fluid dielectric
A variable RF filter ( 102 ) which includes one or more filter elements ( 104,106 ). The filter elements ( 104,106 ) can be formed from a structure selected from the group consisting of stripline,...
|
|
|
6825740 |
TEM dual-mode rectangular dielectric waveguide bandpass filter
Thin type TEM dual-mode rectangular-planar dielectric waveguide bandpass filter is disclosed. The bandpass filter disclosed in the specification is constituted of a dielectric block 11 having a...
|
|
|
6812813 |
Method for adjusting frequency of attenuation pole of dual-mode band pass filter
A method for easily adjusting the frequency of an attenuation pole in a dual-mode band pass filter which is very compact and greatly increases coupling strength while maintaining a great deal of...
|
|
|
6798319 |
High-frequency filter
A high-frequency filter for use in a superhigh frequency band such as of microwaves and millimeter waves has a substrate, a metal conductor disposed on a first main surface of the substrate, a...
|
|
|
6784766 |
MEMS tunable filters
A method for the design of tunable filters is disclosed. MEMS switches are used to alter the resonant frequency of one or more resonators. By tuning the resonant frequency of the resonators, the...
|
|
|
6771147 |
1-100 GHz microstrip filter
A high frequency filter design for the GHz frequency range is provided. The high frequency filter comprises at least a microstrip design that incorporates both transverse and lateral couplings...
|
|
|
6762659 |
Radio filter of combline structure with capacitor compensation circuit
A radio-filter of combline structure with a capacitor compensation circuit, having a transmission line filter with at least one pair of transmission lines arranged between input and output...
|
|
|
6759916 |
High-frequency filter device, filter device combined to a transmit-receive antenna, and wireless apparatus using the same
A high-frequency filter device includes at least one filter to be connected to a high-frequency stage of a wireless apparatus. The filter includes a voltage-controlled variable frequency resonance...
|
|
|
6750733 |
Coupled resonator filter tuning having inter-resonator interaction compensation
The present invention tunes a coupled resonator filter to a given tuning specification using a reference filter that was previously tuned to the specification. A method of tuning a subject filter...
|
|
|
6727785 |
High efficiency single port resonant line
A printed circuit for processing radio frequency signals. The printed circuit includes a substrate. The substrate can be a meta material and can include at least one dielectric layer. The...
|
|
|
6717491 |
Hairpin microstrip line electrically tunable filters
An electronic filter includes a first microstrip line hairpin resonator including first and second arms, a first varactor connected between a first end of the first arm and a first end of the...
|
|
|
6653912 |
RF and microwave duplexers that operate in accordance with a channel frequency allocation method
A duplexer is provided that includes a first tunable bandpass filter, a second tunable bandpass filter and means for coupling the first bandpass filter and the second bandpass filter to an antenna....
|