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Class 324/633 - Using resonant frequency


Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter including a circuit for measuring the frequency
No. of patents: 165
Last issue date: 10/13/2009


1          
NumberTitleIssue Date
7602193RF waveguide mode suppression in cavities used for measurement of dielectric properties
The exemplary embodiments of the invention provide techniques that assist in the absorption, reduction or elimination of the resonance of unwanted cavity modes in a cavity measurement system, such as a cylindrical TE0,n cavity measurement system used to m...
10/13/2009
7550978Communicating with an implanted wireless sensor
The present invention determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. The system energizes the sensor with a low dut...
06/23/2009
7492164Method for manufacturing a product sensor, and a product sensor
The invention relates to a method for manufacturing a product sensor (2), and a product sensor (2). In the manufacturing method, a circuitry pattern is formed in the product sensor (2) for achieving an antenna circuit (L, C1, C2). ...
02/17/2009
7468608Device and method for detecting a substance of a liquid
A device for detecting at least one substance of a fluid includes at least one piezo-acoustic resonator with at least one piezo layer, an electrode arranged on the piezo-electric layer, at least one other electrode arranged on the piezo-electric layer and a surface ...
12/23/2008
7449893Harmonic load pull tuner with resonant prematching module
A harmonic rejection load pull tuner uses a resonant pre-matching module in order to enhance the reflection factor (tuning range) at the fundamental frequency without affecting the tuning range at the harmonic frequencies. The insertion loss of the harmonic tuner it...
11/11/2008
7427819Film-bulk acoustic wave resonator with motion plate and method
An apparatus and method for measuring a target environmental variable (TEV) that employs a film-bulk acoustic resonator with motion plate. The film-bulk acoustic resonator (FBAR) includes an acoustic reflector formed in an FBAR wafer and a surface. A first electrode...
09/23/2008
RE40488Orientation measuring instrument
It is possible to generate a resonance mode such that a dielectric resonator (20) can be resonated and an electric field vector leaking out from the resonator (20) exists by arranging antennas (22a and 22b) for the resonator (20). ...
09/09/2008
7423435Method and apparatus for measuring grammage
A grammage measuring apparatus including a dielectric resonator which is arranged only at one side surface of a sample; a shielding container with which the dielectric resonator is substantially covered except for a sample measuring surface; a microwave excitation d...
09/09/2008
7373272Temperature compensated resonant transmission line sensor
A position sensing system uses a resonant transmission line having a moveable dielectric as a position sensor. The system includes circuitry that supplies an RF drive signal to the resonant transmission line, which reflects the drive signal. Based on a standing wave...
05/13/2008
7358863Double barrel chemical seeking sidewinder gun devices
A large side vandal and weather resistant sign, capable of displaying images from several components, including a video cassette with tapes or video disc and other component parts for broadcasting command directions and to provide information. The sign system, with ...
04/15/2008
7358749Method, apparatus, and program for measuring an electromagnetic field and medium storing the program
Provided is a method, apparatus and program for calculating an electric-field vector that allows for grasping the intensity, direction and phase of electric field on a scanning plane for an appliance, and a medium storing the program. An electric-field vector at an ...
04/15/2008
7347101Measuring strain in a structure using a sensor having an electromagnetic resonator
The system (10) comprises a sensor (18) 90×90×90×30 mm as an electromagnetic microwave cavity (20) with a coupler (22) with a wire (40) and an antenna (42). Cavity (20) produces a response signal (26) in res...
03/25/2008
7337074Method and apparatus for determining the mass of portioned units of active substances
A method and the apparatus for determining the mass of portioned units of active substances, in particular capsules, tablets or dragees, involves leading the units of active substances through a microwave resonator and determining the mass from the displacement of t...
02/26/2008
7326939Method and device for quality controlling packets
A method and device for quality controlling packets of cigarettes, whereby, as a packet is fed, in use, through a quality control station, an optical detecting unit acquires data relative to given portions of the packet, which portions are coated with material optic...
02/05/2008
7302829Contactless humidity/chemical vapor sensor device and associated method of fabrication
The invention provides a contactless sensor device operable for sensing water vapor or a predetermined chemical vapor including a thin film, wherein the thin film includes a nanostructured sensing layer and a soft magnetic layer disposed directly adjacent to the nan...
12/04/2007
7299678Sensor apparatus
A measurement head particularly for borehole use can measure multiple parameters with no electronics in the head and only a single conductor cable. Double-ended tuning forks (26, 28 and 38, 40) in the head are arranged to respond to different parameter...
11/27/2007
7285963Method and system for measurement of dielectric constant of thin films using a near field microwave probe
A measurement technique based on a microwave near-field scanning probe is developed for non-contact measurement of dielectric constant of low-k films. The technique is non-destructive, non-invasive and can be used on both porous and non-porous dielectrics. The techn...
10/23/2007
7283922Transducer employing wireless transmissions for sending and receiving signals
A transducer is implemented to operate with transmitted frequency signals. These transmitted signals provide a bias potential to the transducer and enable the transducer to transmit a transducer output signal to a remote location. The transducer has an antenna for r...
10/16/2007
7276916Method and arrangement for measuring conductive component content of a multiphase fluid flow and uses thereof
The present invention relates to a method and an arrangement of measuring conductive component content of a multiphase fluid flow and uses thereof. The claimed device comprises two coils arranged around the pipe containing the fluid to be measured, where the induced...
10/02/2007
7271720Homeland intelligent systems technology “H-LIST”
Homeland Intelligence Systems Technology “H-LIST” comprises nano-sensors embedded in a silicon substrate and etched/fused in a micro-fibered material to enable an outfit for monitoring suspicious terrorist activities and for track biological and chemical gases, ...
09/18/2007
7259017Method of diagnosing lubricated portion and system of diagnosing lubricated portion
The invention provides a method of diagnosing a lubricated portion which can precisely measure a metal concentration in a lubricating oil and can diagnose accurately a state of the lubricated portion on the basis of a value of measurement. In accordance with the pre...
08/21/2007
7243038Method and apparatus for testing circuit boards
A system and method for inductance testing a planar magnetic circuit in a board having a pair of contacts that may include a core; a pair of leads; a controller for contacting the pair of leads with the pair of contacts, registering the core with the planar magnet c...
07/10/2007
7242176Systems and methods for evaluating electromagnetic interference
Systems and methods for evaluating electromagnetic interference that may be employed, for among other things, to evaluate electronic system immunity to radiated electromagnetic fields and/or to identify particular electronic system areas that are susceptible to elec...
07/10/2007
7218090Passive radio frequency power spectrum analyzer
A spectrum analyzer includes a resonator board that in turn has a substrate and a plurality of resonators. Each resonator may include a first segment that includes a first segment discontinuity and that may also define a boundary and a second segment that has a seco...
05/15/2007
7213444Optoacoustic gas sensor
An optoacoustic sensor for detecting one or more target gases includes a body featuring halves containing measurement cells. Each measurement cell is in communication with a light source and a microphone as well as the ambient atmosphere. Evaluation and control elec...
05/08/2007
7211923Rotational motion based, electrostatic power source and methods thereof
A power system includes a member with two or more sections and at least one pair of electrodes. Each of the two or more sections has a stored static charge. Each of the pair of electrodes is spaced from and on substantially opposing sides of the member from the othe...
05/01/2007
7202673Tuned MMIC probe pads
A microwave integrated circuit chip having microwave transmission line coupled to an input of a microwave circuitry: The microwave transmission line comprises: a substrate; a strip conductor disposed on a first surface of the substrate, such strip conductor having a...
04/10/2007
7199591Method of measuring relative dielectric constant of dielectric substance of powders, cavity resonator used in the same, and application apparatus
A relative dielectric constant of a mixed substance consisting of powders and a liquid medium is calculated, and then the relative dielectric constant of the mixed substance or a relative dielectric constant of the liquid medium is calculated as a relative dielectri...
04/03/2007
7199592Method and apparatus for applying microwaves to measure the moisture content of material
Apparatus for ascertaining the mass and/or the moisture content of successive increments of a running rod containing tobacco and/or filter material for tobacco smoke has a resonator housing with a cylindrical internal chamber which is disposed between an inlet and a...
04/03/2007
7190177Method and apparatus for nondestructive sample inspection
An apparatus for inspecting a sample for defects includes a signal generator for generating a signal and a device for splitting the signal into two separate signals which have substantially equal phase and magnitude. A sensor radiates the two signals on the sample a...
03/13/2007
7187286Methods and systems for using RFID in biological field
Biological reagent carrier devices and methods are disclosed, which employ RFID techniques to associate information with biological reagents. ...
03/06/2007
7187183Apparatus and method for microwave determination of at least one physical parameter of a substance
A method and an apparatus is described to measure at least one physical parameter of a substance such as moisture and salt content. This is done by transmitting a microwave beam through the material to be measured and detect only a reflection of a predetermined pola...
03/06/2007
7183917EAS/RFID identification hard tags
A re-usable identification tag that includes a combination of RFID (radio frequency identification) elements and EAS (electronic article surveillance) elements, or multiple RFID elements without an EAS element, or multiple EAS elements without RFID elements. Systems...
02/27/2007
7176696Method of detecting and eliminating foreign bodies in a flow of tobacco
In a method of detecting and eliminating foreign bodies in tobacco, a flow of tobacco advances first through a preparation zone where it is gathered into a continuous ribbon of tobacco filler, then through a forming station at which the filler is used to fashion a c...
02/13/2007
7168150Method of making a resonant frequency tag
A method of making a resonant frequency tag which resonates at a predetermined frequency. The method involves providing a first conductive pattern having an inductive element and a first land and a second conductive pattern having a second land and a third land whic...
01/30/2007
7170300Apparatus and method for inspecting interface between ground layer and substrate of microstrip by using scattering parameters
An apparatus and method for detecting a defect on a ground layer of microstrip by using scattering parameters is disclosed. The apparatus includes: a providing unit for providing a signal to the microstrip by changing a frequency of the signal in a predetermined ran...
01/30/2007
7161348Inductive sensor unit
An inductive sensor unit for detecting the position of a vehicle seat or for a gate-shifting unit of an automatic transmission, is described. The inductive sensor unit has a plurality of sensor coils that are disposed in planar fashion on a printed circuit board. A ...
01/09/2007
7112970Coaxial radio frequency adapter and method
A coaxial radio frequency adapter and method are disclosed. An adapter has a tapered signal pin and a tapered ground sleeve to maintain a consistent impedance and minimize reflections while connecting two elements having different dimensions. A method employs an ada...
09/26/2006
7113876Technique and electronic circuitry for quantifying a transient signal using threshold-crossing counting to track signal amplitude
Circuitry adapted for carrying out associated techniques for: (a) calculating a damping factor, e.g., a damping ratio represented by ζ, or a quality factor Q, where ζ≈1/2Q, for a transient signal received, having been emitted from a resonator-type sensor element...
09/26/2006
7112924Electronic energy switch for particle accelerator
Some embodiments include an accelerator waveguide to receive RF power, the accelerator waveguide comprising a side cavity, an element fixedly disposed within the side cavity, and a device coupled to the element, wherein the device and the element are operable to con...
09/26/2006
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