Class 324/641 - To determine insertion loss

Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter wherein measurement of the change provides
No. of patents: 21
Last issue date: 10/16/2007

Number	Title	Issue Date
7282926	Method and an apparatus for characterizing a high-frequency device-under-test in a large signal impedance tuning environment An impedance tuning measurement setup and method for characterizing high frequency devices-under-test whereby one inserts an extremely low loss directive coupling structure between the terminal of the device-under-test and that part of the impedance tuner that gener...	10/16/2007
7260930	Radio frequency-based particulate loading monitoring system A particulate trap regeneration system is provided, which may include a particulate trap having a filter medium configured to remove one or more types of particulate matter from an exhaust flow of an engine and a regeneration device configured to reduce an amount of...	08/28/2007
7253641	Radio frequency particulate sensing system A particulate sensing system for a particulate trap including a radio frequency transmit circuit and a radio frequency receive circuit is disclosed. The transmit circuit may include a wideband signal generator configured to produce a wideband radio frequency signal ...	08/07/2007
7157919	Method and system for detecting soot and ash concentrations in a filter A system and method for detecting soot and or ash loading within a filter is provided. The method comprises the steps of transmitting a source RF signal through a filter, measuring a reflected RF signal, measuring a transmitted RF signal, calculating reflected power...	01/02/2007
7112970	Coaxial 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
7042232	Cable and substrate compensating custom resistor A compensating resistor includes a substrate with a first termination at one end and a second termination at the other end. A frontside resistor is on the frontside of the substrate and extends between the first termination and the second termination. A backside res...	05/09/2006
7034546	Method and apparatus for measuring insertion loss of a conductor A method and apparatus for determining the insertion loss of a conductor. The method includes introducing a test signal into a first signal transmission path and a second signal transmission path. The conductor is included in the first path but at least partially ex...	04/25/2006
6964694	Diesel particulate filter monitoring using acoustic sensing A particulate filter system is provided including an exhaust system transporting emissions from an engine. A filter such as a diesel particulate filter is disposed in the exhaust system. An acoustic sensor is associated with the exhaust system for detecting one or m...	11/15/2005
6690177	Frequency selective improvement of the directivity of a return loss bridge A frequency selective improved directivity of a return loss bridge is achieved by generating a counteractive reflected energy vector to cancel a reflected energy vector caused by imperfections, such as parasitic effects and an unbalanced balun, in the ret...	02/10/2004
6686748	Procedure arrangement and sensor for testing of the H-F tightness of the junction between two adjacent parts Arrangement to test HF tightness of a junction between two adjacent parts including HF generator (4), HF line that guides the signal over junction (1), measuring device (10) as well as a signal analyzer. HF line includes two waveguides (5a, 5b) that have ...	02/03/2004
5939888	Digital method and apparatus for monitoring moisture content A monitor for monitoring the moisture content of grain comprises at least one programmable PIN diode attenuator connected between a microwave measurement signal source and a transmit antenna. A controller stores an addressable attenuation table, each loca...	08/17/1999
5861753	Electromagnetic compatibility (EMC) test cell An electromagnetic compatibility (EMC) test cell has an electromagnetically screening enclosure which is rectangular in cross-section with a length and first and second pairs of opposed side walls. A first antenna array comprises a first array of conducto...	01/19/1999
5497099	Antenna system for soot detecting An apparatus for detecting the accumulation of particulate material on a filter medium formed of dielectric material and disposed in a chamber is provided. The apparatus is operable for generating and transmitting an RF signal through the filter medium an...	03/05/1996
5157340	Method and apparatus for detecting soot concentration in particulate trap A method of detecting the accumulation of particulate material collected on a filter medium formed of dielectric material in a chamber having the property of a microwave waveguide or transmission line comprises the steps of exciting the chamber with a mic...	10/20/1992
5025222	System and method for monitoring substances and reactions A system and method for monitoring conditions in a fluid medium. A stream of the fluid medium is flowed through a fluid container which is electrically configured as a transmission line segment and which is electrically connected to load to UHF or microwa...	06/18/1991
4990858	Coaxial microwave asborption diagnostic A coaxial microwave absorption diagnostic device comprises a hollow cylindrical outer layer conductor with a coaxially aligned conductor rod extending therethrough and a dielectric material which interconnects the outer layer to the conductor rod. The dev...	02/05/1991
4947129	Petroleum stream microwave watercut monitor The petroleum stream watercut monitor includes a test cell having a petroleum stream flowing through it. A microwave transmitter provides microwave energy through an antenna through an isolator. The antenna irradiates the test cell with the microwave ener...	08/07/1990
4943778	Instrument for measuring high frequency characteristics of sheet-like materials An instrument for measuring the high frequency characteristics of a sheet-like material comprising: a pair of opposed slits formed in a pair of opposed tube walls of a cavity resonator having an optional cross-sectional shape, said slits extending paralle...	07/24/1990
4931720	Arrangement for measuring transfer impedances of coaxial cables In an arrangement for measuring transfer impedances of coaxial systems (3), a generator (1) is connected via a coaxial, supplying system (2) to a conductor shield (6) of the coaxial system (3) at a first end of the coaxial system (3). A voltage measuring ...	06/05/1990
4764718	Microwave oil saturation scanner The present invention is comprised of a non-intrusive microwave sensor system for measuring fluid saturation or multiple fluids contained within a flowline or a fluid saturated porous medium. Here, the microwave oil saturation scanner (MOSS) comprises a t...	08/16/1988
4745353	In situ BS&W measurement A centrifugal filter element is inserted into a pipeline to provide a dry oil stream for analysis. A moisture sensing probe is inserted along the central axis of the centrifugal filter to sense the properties of the dry oil stream therein. A second probe ...	05/17/1988

PatentStorm

Quotables

PatentStorm News

Class 324/641 - To determine insertion loss