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
Adjustable high precision surveying device
Using sets of OTDR receive fibers with different lengths of marker events to verify optical fiber connectivity
Network traffic demotion
Container pack
Photoelectric conversion apparatus
Method and structure for image local contrast enhancement
Electronic device assemblies
  Randomly Featured Patents
Benzodioxane derivatives
Multi-layer absorbent composite
Motor control center and subunit therefor
Semiconductor integrated circuit device
Indexing and caching strategy for local queries
Fixation arrangement for an oil pump in a refrigeration compressor
Memory controller for padding and stripping data in response to read and write commands
Process for the remote coating of the surfaces of a cavity, as well as the application of this process
Method for molding saturated crystalline polyesters
Sliding gate mechanism with side wall mounted biasing springs