Resources Contact Us Home
Method and apparatus for broadband measurement of dielectric properties

Image Number 5 for United States Patent #5132623.

A method and apparatus measures dielectric properties over a broad range of frequencies. The functions of various resistivity and dielectric constant measuring devices such as logging tools are combined in a single tool. A measuring tool includes novel transmitting and receiving antennas. Electromagnetic energy flows to a transmitting antenna. A stripline adapter permits transmission to a stripline having a metallic central strip. A strip face is bent at approximately right angles, and has a length that is compatible with the desired frequency coverage. A ground plane extends from the stripline adapter to the right angle bend, and a void exists between the center strip and the ground plane. A dielectric is positioned to nearly fill the void. The antennas are positioned so that the strip face lies flush with the tool face, to permit electromagnetic energy to be transmitted into and out of the material to be analyzed. An enclosure comprised of four metallic walls surrounds the stipline, and is in electrical contact with the ground plane and the stripline adapter. The invention permits an analysis of the fluids in the material as well.

  Recently Added Patents
Method of preparing enteric hard capsule and enteric hard capsule prepared thereby
Integrated testing circuitry for high-frequency receiver integrated circuits
Optical packet signal transmission device and WDM optical communication network
System, method, and software for researching, analyzing and comparing expert witnesses
Delay lines, amplifier systems, transconductance compensating systems and methods of compensating
Method for detection and characterization of a microorganism in a sample using time-dependent intrinsic fluorescence measurements
Communication apparatus and communication system
  Randomly Featured Patents
Oscillating electromagnetic pump with one-way diaphragm valves
Two-stage hydraulic valves
Expansion joint
Guide vane assembly for reverse flow cooled dynamoelectric machine
Tag attaching apparatus
Container closure with multiple liner seals
Bracteantha plant named `Redbragol`
EGR/air mixing intake manifold with dual orientations
Composite sacrificial material