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32results about "Resonant circuit driving/adjusting means" patented technology
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Antenna tuning apparatus for a multiport antenna array
ActiveUS20140306784A1Reduce the valueTransmitters monitoringMultiple-port networksOperating frequencyAntenna array
An antenna tuning apparatus for a multiport antenna array used for sending and / or receiving electromagnetic waves for radio communication comprises: 4 antenna ports, 4 user ports, 10 adjustable impedance devices each presenting a negative reactance and having a terminal coupled to one of the antenna ports, 4 windings each having a first terminal coupled to one of the antenna ports and a second terminal coupled to one of the user ports, and 10 adjustable impedance devices each presenting a negative reactance and having a terminal coupled to one of the user ports. All adjustable impedance devices are adjustable by electrical means. Any small variation in the impedance matrix of the antenna array, caused by a change in operating frequency or a change in the medium surrounding the antennas, can be compensated with a new adjustment of the adjustable impedance devices.
Owner:SAMSUNG ELECTRONICS CO LTD
Signal tuning with variable intermediate frequency for image rejection and methods
ActiveUS20110171919A1Continuous tuning detailsResonant circuit driving/adjusting meansFrequency spectrumIntermediate frequency
In a method and apparatus for operating a super-heterodyne receiver, a tuning circuit has a local oscillator for frequency shifting a desired channel to a selected frequency and a controller for controlling the local oscillator. The controller determines for each of a number of identified channels, whether an image signal is present at frequencies in the spectrum that when tuned to a first selected frequency interfere, and is operable to select a modified selected frequency at which interference between the image signal and the identified channel is reduced.
Owner:FRESCO MICROCHIP
Resonant gyroscopes and methods of making and using the same
ActiveUS20170038211A1Need be addressResonant circuit driving/adjusting meansSpeed measurement using gyroscopic effectsElectricityGyroscope
Certain implementations of the disclosed technology may include systems and methods for high-frequency resonant gyroscopes. In an example implementation, a resonator gyroscope assembly is provided. The resonator gyroscope assembly can include a square resonator body suspended adjacent to a substrate, a ground electrode attached to a side of the resonator body, a piezoelectric layer attached to a side of the ground electrode, a drive electrode in electrical communication with the piezoelectric layer, and configured to stimulate one or more vibration modes of the square resonator body; and a sense electrode in electrical communication with the piezoelectric layer, and configured to receive an output from the square or disk resonator responsive to stimulation of the one or more vibration modes.
Owner:GEORGIA TECH RES CORP
Input current limited power supply and audio power amplifier for high power reproduction of nondeterministic signals
ActiveUS9209767B1Power managementAmplifier modifications to reduce temperature/voltage variationPeak valueEngineering
A method and apparatus for amplifying audio signals without exceeding an input current limit budgeted for the audio power amplifier circuit includes an intermediate energy storage between a battery and the audio power amplifier which provides an energy reserve to support amplifying peaks where the peaks have a peak power that is greater than the power that can be drawn from the battery due to the input current limit. Speech signals, which include substantial periodic content having short peaks relative to a pitch period, can be amplified without depleting the intermediate energy storage, allowing the intermediate energy storage to recover after a peak and before occurrence of a next peak. When an audio signal is amplified that results in depletion of the intermediate energy storage, a depletion recovery circuit reduces the overall audio gain to reduce the power demand of the audio power amplifier so as to substantially avoid distortion.
Owner:MOTOROLA SOLUTIONS INC
Electronic atomization device, use state detection method and device and readable storage medium
PendingCN111567899AImprove reliabilityResonant circuit driving/adjusting meansTobaccoAerosolizeControl cell
The invention relates to an electronic atomization device, a use state detection method and device and a readable storage medium. The electronic atomization device comprises: a heating unit for heating an aerosol-generating product; a resonance unit which is used for generating an electromagnetic field to heat the heating unit; a detection unit which is used for detecting the energy attenuation characteristic of the electromagnetic field and outputting a detection signal; and a control unit which is used for outputting an excitation signal to excite the resonance unit to generate an electromagnetic field and determining the state of the aerosol generating product according to the detection signal. The control unit excites the resonance unit to generate the electromagnetic field to enable the heating unit to inductively heat, the detection unit is used for detecting the energy attenuation characteristic of the electromagnetic field, and the control unit determines the state of the aerosol generating product according to the detection signal. Whether an aerosol generating product is loaded or not can be determined according to attenuation characteristics of electromagnetic field energy, and the reliability of a detection result can be effectively improved.
Owner:SHENZHEN MERIT TECH CO LTD
Integrated electronic circuitry comprising tunable resonator
ActiveUS20080088393A1Easy to integrateResonant circuit driving/adjusting meansActive element networkCapacitanceResonance
An electronic circuit includes: an acoustic resonator of BAW or SAW type, said resonator having a series resonance frequency and a parallel resonance frequency; an active circuit which is coupled in parallel to said acoustic resonator, said active circuit having a negative capacity acting on the parallel resonance frequency of said resonator.
Owner:STMICROELECTRONICS SRL
Reconfigurable Microwave Filters
Illustrative embodiments of reconfigurable microwave filters, as well as associated systems and methods, are disclosed. In at least one illustrative embodiment, a reconfigurable microwave filter may comprise a plurality of cavity resonators on a common substrate and a plurality of control circuits each configured to control a resonant frequency of one of the plurality of cavity resonators. The reconfigurable microwave filter may also comprise a plurality of feedback circuits each configured to generate a feedback signal that is indicative of the resonant frequency of one of the plurality of cavity resonators and to transmit the feedback signal to one of the plurality of control circuits.
Owner:INDIANA MICROELECTRONICS
Electronic tuning system
ActiveUS10348274B2Resonant circuit driving/adjusting meansDiscontinuous tuning for band selectionTransfer systemResonance
A system is described for maintaining an inductive-capacitive (LC) network at resonance while the excitation frequency may be varied between a number of discrete frequencies at desired instants controlled by a modulation input, while taking into account component parameter errors due environmental and ageing as well as manufacturing tolerances. Control of the resonance while the excitation frequency changes permits the transmission of frequency modulation (FM) or frequency shift keying (FSK) information through an inductively coupled power transfer system.
Owner:REDMAN WHITE WILLIAM
Rf-resonator tuning
InactiveCN1819329AReduce gapCompensate for manufacturing tolerancesResonant circuit driving/adjusting meansResonatorsResonant cavityResonance
A RF-resonator (1) comprises a resonator body (2) with at least one resonant cavity (3). A conductive sheet material forms a surface area of the resonant cavity (3), the conductive sheet material being deformable by application of a mechanical force for tuning the resonator to a target frequency. A method for tuning the RF-resonator, comprising the following steps: measuring the resonance frequency of the resonant cavity (3), and deforming the conductive sheet material by applying an increasing mechanical force to the conductive sheet material until the target frequency of the resonant cavity (3) is reached.
Owner:ALCATEL LUCENT SAS
Integrated electronic circuitry comprising tunable resonator
ActiveUS7683742B2Easy to integrateResonant circuit driving/adjusting meansActive element networkResonanceAcoustics
An electronic circuit includes: an acoustic resonator of BAW or SAW type, said resonator having a series resonance frequency and a parallel resonance frequency; an active circuit which is coupled in parallel to said acoustic resonator, said active circuit having a negative capacity acting on the parallel resonance frequency of said resonator.
Owner:STMICROELECTRONICS SRL
High gamma electronic tuner
An RF electronic impedance tuner uses multiple PIN diodes, Varactors or MOSFETs, mounted in a low loss slab-line, between the bottom surface of the center conductor and ground, are DC controlled individually and spaced appropriately along the slab-line in order to generate maximum Gamma and bandwidth. The electronic tuner is combined with a slide screw tuner, using the same slab-line in various configurations, before, after or sharing the same slab-line section, mounted on top of each-other. Calibration on a VNA allows high Gamma and harmonic tuning.
Owner:TSIRONIS CHRISTOS
Apparatus and method for tuning a resonance frequency
InactiveCN105210293AEasy to integrateImpedence networksResonant circuit driving/adjusting meansResonanceMechanical energy
There are disclosed various apparatuses and methods for tuning a resonance frequency. In some embodiments there is provided an apparatus (200) comprising at least one input electrode (202, 204) for receiving radio frequency signals; a graphene foil (210) for converting at least part of the radio frequency signals into mechanical energy; at least one dielectric support element (212) to support the graphene foil (210) and to space apart the at least one input electrode (202, 204) and the graphene foil (210). The graphene foil (210) has piezoelectric properties. In some embodiments there is provided a method comprising receiving radio frequency signals by at least one input electrode (202, 204) of an apparatus (200); providing a bias voltage to the apparatus (200) for tuning the resonance frequency of the apparatus (200); and converting at least part of the radio frequency signals into mechanical energy by a graphene foil (210) having piezoelectric properties.
Owner:NOKIA TECHNOLOGLES OY
Intelligent mechanical balancing apparatus for slide screw tuners
ActiveUS9431999B1Multiple-port networksResonant circuit driving/adjusting meansMicrowaveElectric machine
An intelligent, independent and universal mechanical balancing apparatus for automatic microwave multi-probe slide screw tuners allows stable on-wafer testing of sub-micrometric devices. Low loss rigid airlines (bend-lines) used to connect the multi-probe tuner with the chips, in order to improve the tuning range at the DUT reference plane, causes mechanical movements of the wafer probes attached to the rigid bend-lines, when the tuner mobile carriages move horizontally. Stabilizing the center of gravity (balancing) of the tuner by means of exactly controlled counter-weights, driven by the same firmware which controls the tuner motors, allows for synchronized compensation of the probe movement and safe on wafer load pull operation.
Owner:TSIRONIS CHRISTOS
Central frequency adjustment device and adjustable inductor layout
ActiveUS20080180194A1Increase layout areaSave layout area andDiscontinuous tuningContinuous tuning detailsEngineeringInductor
The present invention provides a central frequency adjustment device and adjustable inductor layout; wherein, the central frequency adjustment device is applied in an inductor / capacitor tank (LC tank) for adjusting the central frequency of the LC tank. The device comprises a first inductor with a first end and a second end; a second inductor with one end coupled with the second end of the first inductor; and, a first trimmable wire connected to the first inductor in parallel and to the second inductor in series, which adjusts the central frequency by cutting off the first trimmable wire.
Owner:REALTEK SEMICON CORP
Antenna tuning apparatus for a multiport antenna array
Owner:SAMSUNG ELECTRONICS CO LTD
Resonant gyroscopes and methods of making and using the same
ActiveUS9917571B2Resonant circuit driving/adjusting meansSpeed measurement using gyroscopic effectsElectricityGyroscope
Certain implementations of the disclosed technology may include systems and methods for high-frequency resonant gyroscopes. In an example implementation, a resonator gyroscope assembly is provided. The resonator gyroscope assembly can include a square resonator body suspended adjacent to a substrate, a ground electrode attached to a side of the resonator body, a piezoelectric layer attached to a side of the ground electrode, a drive electrode in electrical communication with the piezoelectric layer, and configured to stimulate one or more vibration modes of the square resonator body; and a sense electrode in electrical communication with the piezoelectric layer, and configured to receive an output from the square or disk resonator responsive to stimulation of the one or more vibration modes.
Owner:GEORGIA TECH RES CORP
Stopper structure for rotary operation member, electronic device, and channel stopper
ActiveUS8717126B2Avoid bitesEasy to installResonant circuit driving/adjusting meansElectric switchesChannel-stopperEngineering
A stopper structure includes a wall defining an opening. A rotary electronic component has a rotational shaft extending through the opening. A channel stopper has a tubular body and an engagement projection. The tubular body is detachably mounted onto the rotational shaft and is inhibited from rotating relative thereto. The engagement projection extends from an end of the tubular body in an axial direction and a radial direction with respect to the rotational shaft. A rotary operation member is detachably mounted onto the rotational shaft and the tubular body and is inhibited from rotating relative thereto. The rotary operation member has an axial hole in which at least portions of the rotational shaft and the tubular body fit. A limiting portion provided on the wall is engageable with the engagement projection for limiting a range of rotation of the rotational shaft.
Owner:JVC KENWOOD CORP A CORP OF JAPAN
Signal tuning with variable intermediate frequency for image rejection and methods
ActiveUS9184776B2Continuous tuning detailsResonant circuit driving/adjusting meansFrequency spectrumIntermediate frequency
Owner:FRESCO MICROCHIP
Signal tuning with variable intermediate frequency for image rejection and methods
ActiveCN102783024AContinuous tuning detailsResonant circuit driving/adjusting meansFrequency spectrumIntermediate frequency
The invention relates to signal tuning with variable intermediate frequency for image rejection and methods. In a method and apparatus for operating a super-heterodyne receiver, a tuning circuit has a local oscillator for frequency shifting a desired channel to a selected frequency and a controller for controlling the local oscillator. The controller determines for each of a number of identified channels, whether an image signal is present at frequencies in the spectrum that when tuned to a first selected frequency interfere, and is operable to select a modified selected frequency at which interference between the image signal and the identified channel is reduced.
Owner:FRESCO MICROCHIP
Implantable device with electrical filter
InactiveUS20160045725A1Low resistivityReduce capacitanceResonant circuit driving/adjusting meansTransvascular endocardial electrodesCapacitanceResonance
An implantable device including a proximal end, a distal end, an elongate electrically conductive component arranged between the proximal end and the distal end, and a contact pole electrically connected to the elongate electrically conductive component. The contact pole is arranged in a region of the distal end to electrically contact bodily tissue adjacent to the contact pole during operation of the implantable device. The elongate electrically conductive component includes a sub-component connected in series with remaining portions of the elongate electrically conductive component. The sub-component includes a capacitive component, an inductive component and a magneto-resistive component, which are arranged to cause a reduction of a resistivity of the magneto-resistive component that leads to a shift of a resonance frequency of the sub-component.
Owner:BIOTRONIK SE & CO KG
Electrical terminal module
ActiveCN102217020ATime indicationResonant circuit driving/adjusting meansElectricityElectrical conductor
The invention relates to an electrical terminal module to which a large number of electrical conductors are connected and on which at least one predetermined function, in particular a timing function, can be executed. These functions can often be set, adjustable electrical components being arranged on a printed circuit board, which is arranged in the terminal module, for this reason. Since electrical terminal modules of this kind are required in ever narrower forms, it is necessary to create ways of being able to even arrange the adjustable electrical components in the housing too, but at the same time maintaining the ease with which the function can be set. The invention solves this problem by virtue of directly mounting the adjusting means on the printed circuit board which is installed in the housing.
Owner:PHOENIX CONTACT GMBH & CO KG
Reconfigurable microwave filters
ActiveUS9979372B2Multiple-port networksResonant circuit driving/adjusting meansHemt circuitsFeedback circuits
Illustrative embodiments of reconfigurable microwave filters, as well as associated systems and methods, are disclosed. In at least one illustrative embodiment, a reconfigurable microwave filter may comprise a plurality of cavity resonators on a common substrate and a plurality of control circuits each configured to control a resonant frequency of one of the plurality of cavity resonators. The reconfigurable microwave filter may also comprise a plurality of feedback circuits each configured to generate a feedback signal that is indicative of the resonant frequency of one of the plurality of cavity resonators and to transmit the feedback signal to one of the plurality of control circuits.
Owner:INDIANA MICROELECTRONICS
Wireless power transmission and dynamic related system resonant frequency detection and compensation techniques
PendingCN111541310AResonant circuit auxillary power controlEfficient power electronics conversionTelecommunicationsSquare waveform
A method for switch mode DC-AC converter driven oscillation system control, which can make the system always work on square wave driving, soft-switching and resonant conditions at the same time so that the system efficiency and power transfer ability can be greatly increased. The proposed method composes of four major techniques: (1) the technique to dynamically monitoring the innate system resonant frequency by detecting the phase difference between the system gate driving signal and the ZVC (Zero Voltage Crossing) or ZCC (Zero Current Crossing) signal of the main oscillation of the system;(2) the technique to realize a kind of Voltage Controlled Soft-switching Capacitor (VCSC); (3) the technique to avoid frequency bifurcation problem of variable frequency systems and (4) the technique toadjust the output pulse width of mono-stable flip flops (or multivabritors) dynamically with a DC voltage.
Owner:田建龙
Locking device for adjusting element
ActiveUS9077318B2Strong lockEasily and inexpensively and attachedTime indicationResonant circuit driving/adjusting meansMechanical engineeringPrinted circuit board
The invention relates to a device for locking an adjusting means (5), in particular an electrical addressing device, mounted on a printed circuit board (1) which extends in an x and / or y direction. The device includes an essentially flat base plate (2) having a length (L), a width (B), and a thickness (D), to which a first detent spring (4) is attached for locking engagement with marking means (23, 23′) of the adjusting means (5). The first detent spring preferably has an oblong spring leg (7), wherein in the installed state the base plate (2) is mounted on the printed circuit board (1).
Owner:PHOENIX CONTACT GMBH & CO KG
Method and apparatus for tuning golden filter
PendingUS20220190454A1Easy to adjustEasy to tuneResonant circuit driving/adjusting meansCoupling devicesClassical mechanicsControl theory
A method of tuning a golden filter used to initially tune a microwave filter using an apparatus for tuning the golden filter may comprise: fixing the golden filter with a plurality of filter fixing bolts and nuts; bringing a plurality of height adjusting screws into contact with tuning screws of the fixed golden filter; fixing the plurality of height adjusting screws with height adjusting screw nuts; and removing the plurality of filter fixing bolts and nuts and moving the golden filter.
Owner:ELECTRONICS & TELECOMM RES INST
High gamma compact harmonic tuner
ActiveUS10097165B1Minimizing insertion lossMaximizing tuning rangeMultiple-port networksResonant circuit driving/adjusting meansHarmonicFundamental frequency
Compact, high Gamma, wideband, multi-carriage-multi-harmonic tuners use a meandering slabline structure and multiple probes and carriages. The meandering structure reduces the overall tuner length by more than half at 0.4 GHz. The required slabline bends are made using a vertical-to-horizontal slabline transition. Multiple probes are employed within the slabline segment closest to the test port, in order to minimize the insertion loss at higher frequencies, caused by the slabline bends. This tuner structure is mostly effective starting at fundamental frequencies below 1 GHz and operating at fundamental or harmonic frequencies as high as 18 GHz.
Owner:TSIRONIS CHRISTOS
Implantable device with electrical filter
InactiveUS9629999B2Transvascular endocardial electrodesResonant circuit driving/adjusting meansElectricityCapacitance
Owner:BIOTRONIK SE & CO KG
Mobile terminal
InactiveUS20150357990A1Improve communication qualityQuality improvementMultiple-port networksResonant circuit driving/adjusting meansCommunication qualityElectrical and Electronics engineering
A mobile terminal according to the present invention can compensate for impedance mismatch of a tuner due to a user's grip, thereby improving communication quality.
Owner:LG ELECTRONICS INC
If amplifier
Until now at least two types of mixer oscillator integrated circuits for tuners have to be developed. One for the symmetrical output mode and one for the asymmetrical output mode. To obtain a tuner, IF amplifier, and / or mixer oscillator integrated circuit that is suitable for both output modes the tuner comprises switching means, whereby in the asymmetrical mode one output of the tuner is coupled to ground.
Owner:NXP BV
Positioning device for radio frequency matcher
ActiveUS10211802B2Power maximizationMultiple-port networksElectrical measurement instrument detailsElectricityRadio frequency
A positioning device for a radio frequency matcher comprises mainly a micro controller, and at least two detecting elements connected to the micro controller. The detecting elements are disposed on electric motors to detect the rotation angles of the electric motors. When the electric motors adjust the positions of the moving pieces of the tuning elements based on the volume of error signals to change the electrical reactance values so that they may approximately meet the requirement of the radio frequency load and that the radio frequency load may achieve a highest possible power, the micro controller may interpret the signals of the rotation angle detecting elements and output the interpreted values for a user to determine whether the moving pieces of the tuning elements are at right positions to approximately meet the requirement of the radio frequency load and maximize the power of the radio frequency load of the radio frequency matcher.
Owner:FAIRTECH
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