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Match Document Document Title
7612637 Built-in cross-coupled dielectric filter  
A stable and reliable built-in cross-coupled dielectric filter with temperature-independent performances and improved rectangular degree and amplitude-frequency characteristic is disclosed. The...
7570136 Re-entrant resonant cavities, filters including such cavities and method of manufacture  
A re-entrant microwave resonant cavity comprises a stub 6 . A cylindrical wall 2 , first end wall 3 and the stub 6 are integrally formed. A second end wall 4 is defined by a metallization...
7561011 Dielectric device  
A dielectric device includes a dielectric substrate and a resonator unit. The resonator unit includes first and second holes. The first hole opens on a first surface of the dielectric substrate and...
7545240 Filter with multiple shunt zeros  
A filter including at least two resonator through-holes defining apertures in the top surface surrounded by respective plates which in combination with the through-holes associated therewith define...
7541896 Stacked resonator and filter  
A stacked resonator and a filter are provided which are capable of achieving miniaturization and minimum loss, and also capable of transmitting a balanced signal with superior balance...
7541893 Ceramic RF filter and duplexer having improved third harmonic response  
A duplexing filter suitable for use in a mobile communication system. The filter has a core of dielectric material with several through holes that define resonators. The core has metallized...
7525401 Stacked filter  
A stacked filter includes an array of resonant sections, the resonant sections adjacent each other being electromagnetically coupled, a first resonator electromagnetically coupled to the resonant...
7489215 High frequency filter  
The invention relates to a high frequency filter of coaxial construction, comprising an outer conductor housing with a housing base and a housing wall, whereby several resonators are embodied in...
7486162 High frequency filter  
An improved high frequency filter of coaxial construction comprises one or more resonators having an electrically conductive internal conductor configured as an internal conductive tube and an...
7486161 Reverse-phase cross coupling structure  
A reverse-phase cross coupling structure includes a base, which has a resonance chamber, resonators vertically arranged in parallel in the resonance chamber, and coupling portions respectively...
7482898 Dielectric filter, dielectric duplexer, and communication apparatus  
A dielectric filter with an ultra hetero-axial structure is provided with open end-face electrodes. By increasing the capacitance between each open end-face electrode and an external conductor...
7482897 Band stop filter  
A band stop filter comprises a transmission line with center and outer conductors, and coaxial resonators. The outer conductor forming a unitary conductive housing with an inner space divided by...
7456702 Low pass metal powder filter  
A low pass filter having a coaxial structure of an inner conductor, an outer conductor and a metal powder composite interposed between the inner and outer conductor. Embodiments include a 50Ω...
7449981 Variable radio frequency band filter  
A variable radio frequency band filter capable of varying the resonance frequency band comprises a housing having a support; a number of resonator rods arranged along the longitudinal direction of...
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...
7369019 RF backscatter transmission with zero DC power consumption  
A method for minimizing power consumption in a wireless device which utilizes backscatter transmission in half-duplex mode, wherein a switching device is interposed between an antenna and a...
7355495 Microwave filter comprising a coaxial structure with a metallized foam having a periodic profile  
The invention relates to a microwave filter comprising a coaxial structure, consisting of a tubular outer conductor and an inner bar conductor. According to the invention, the inner bar conductor...
7348285 Fabric and yarn structures for improving signal integrity in fabric-based electrical circuits  
Coaxial and twisted pair conductive yarn structures reduce signal crosstalk between adjacent lines in woven electrical networks. A coaxial conductive yarn structure includes an inner conductive...
7321278 Low profile ceramic RF filter including trap resonators and a decoupler  
A low profile ceramic filter for connection to an antenna, a transmitter and a receiver. The filter filters an incoming signal from the antenna to the receiver and an outgoing signal from the...
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...
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...
7221243 Apparatus and method for combining electrical signals  
An apparatus and method are presented for combining electrical signals. The apparatus includes a phase-shift distributed element with an input to accept a first signal and an output to supply the...
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...
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...
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...
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...
7005949 Dielectric filter  
A dielectric filter has a dielectric block 1 having a first end face 1 a , a second end face disposed in opposite side to the first end face and lateral faces each being disposed between edges...
6995636 In-band-flat-group-delay type dielectric filter and linearized amplifier using the same  
A small in-band-flat-group-delay type dielectric filter having low-loss characteristics with a small amplitude deviation and uniform-group-delay frequency characteristics is obtained, which enables...
6989725 Dielectric resonator, dielectric filter, dielectric duplexer, and communication apparatus incorporating the same  
The present invention provides a dielectric resonator, a dielectric filter, a dielectric duplexer capable of reducing leakage of electromagnetic waves and capable of being miniaturized, and a...
6977565 Dielectric filter  
A dielectric filter including a dielectric block having two through bores, an outer conductor covering an outer peripheral surface of the block and one end face of the block, an inner conductor...
6954122 Hybrid triple-mode ceramic/metallic coaxial filter assembly  
A hybrid filter assembly is provided having a first ceramic triple-mode mono-block resonator, a second ceramic triple-mode mono-block resonator and at least one metallic resonator coupled to at...
6949987 Dielectric electronic component with attenuation adjustment electrode and method of adjusting attenuation characteristics of the same  
A dielectric electronic component such as a dielectric duplexer includes a dielectric ceramic block, a plurality of resonators arranged in a row in the dielectric ceramic block, and at least one...
6933804 Radio frequency diplexer  
An improved radio frequency diplexer has resonators which are associated either with the transmission path or with the reception path, and at least two additional resonators are also provided. The...
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...
6922120 Dielectric filter, duplexer dielectric filter, and method for manufacturing the same  
A method of manufacturing a dielectric filter comprises the steps of: forming a dielectric block; depositing a conductor on the side surfaces and the second surface of the dielectric block, and...
6914499 Conductive cover for dielectric filter, dielectric filter, dielectric duplexer, and communication apparatus  
A dielectric filter includes a conductive cover formed by bending a metal plate and forming at least one inwardly projecting portion at a predetermined position along the bent portion. The inner...
6914497 Parallel multistage band-pass filter  
In a parallel multistage band-pass filter, a transmission line having an electrical length substantially equal to half (λ/2) of the wavelength of the transmission signal is incorporated between...
6909339 Mounting structure of dielectric filter, dielectric filter device, mounting structure of dielectric duplexer, and communication device  
An excitation hole is provided inside a dielectric block and, on the outer surface of the dielectric block, an input-output terminal electrically connected to an inner conductor inside the...
6897745 Resonator and filter  
There is disclosed a half-wavelength (λ/2) resonator which is constituted of a micro strip line or a strip line and in which line pattern portions are disposed symmetrically with respect to a...
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...
6882251 Microwave filter with adaptive predistortion  
The invention provides a method and apparatus for a adaptively predistorted filter which has a transfer function that satisfies performance criteria specified for at (east one property of the...
6870443 Signal separator and bandpass filter  
A signal separator and bandpass filter that use plates with posts. The signal separator uses two bandpass filters to separate two signals of different carrier frequencies from one another. The...
6870441 Method for transforming bandpass filters to facilitate their production and resulting devices  
The invention concerns a method for optimizing elements of a narrow or intermediate band bandpass filter whereof the LC prototype has been determined. The invention is characterized in that it...
6867663 Dielectric duplexer  
The present invention provides a dielectric duplexer 10 comprising a receiving filter 1 and a transmitting filter 2 which are connected in parallel with an antenna connecting terminal portion...
6861929 Low-pass filter  
A plurality of cylindrical inner conductor portions having different diameters are connected with each other to form an inner conductor. The inner conductor portions include high-impedance portions...
6859118 System and method for an ultra low noise micro-wave coaxial resonator oscillator using ⅝ths wavelength resonator  
A system and method for a novel microwave coaxial resonator oscillator using a ⅝ths wavelength resonator is described. The novel system and method provides a coaxial resonator for operation at...
6853266 Dielectric filter, dielectric duplexer, and communication device  
Resonator holes are provided so as to extend between opposing surfaces of a dielectric filter. At least one of the resonator holes have large-diameter hole portions, and small-diameter hole...
6844796 Dielectric filter having increased bandwidth  
A dielectric filter includes a plurality of resonators provided in a dielectric block in parallel to each other. Each resonator is formed through providing an inner conductor on a wall surface of a...
6833776 Dielectric resonator, dielectric filter, dielectric duplexer, and communication device  
A dielectric resonator includes a high-frequency dielectric ceramic containing a first ceramic having an adhesive strength of 70 newtons or more per 2 millimeter square to metallic coatings and a...
6828883 High performance dielectric ceramic filter  
A reduced size ceramic block filter has trap holes whose center is askew from the line running through the center of the transmission poles such that the height-wise distance between its center and...
Matches 1 - 50 out of 497 1 2 3 4 5 6 7 8 9 10 >