Insulated underground antenna and method for utilizing same

• US 5,057,844 A
• Filed: 03/19/1990
• Issued: 10/15/1991
• Est. Priority Date: 03/19/1990
• Status: Expired due to Fees

• Current Assignee: Mark B. Rothstein
• Original Assignee: Mark B. Rothstein
• Inventors: Rothstein, Mark B.
• Primary Examiner(s): Barron, Jr., Gilberto
• Application Number:
  US07/495,473
• Time in Patent Office: 575 Days
• Field of Search: 342/5, 342/22, 342/51, 342/187, 324/329, 343/719, 343/873, 343/895, 340/572
• US Class Current: 342/51
• CPC Class Codes: G01S 7/02 of systems according to group G01S13/00
• CPC Class Codes: G01V 15/00 Tags attached to, or associated with, an object, in order to enable detection of the object record carriers for use with machines having a detectable tag or marker G06K19/00
• CPC Class Codes: H01Q 1/04 Adaptation for subterranean or subaqueous use

Abstract

A passive inductively and capacitively loaded antenna is shown which is retained within a closed cel styrene foam enclosure. A method for detecting buried utility components utilizing such in combination with underground radar is also shown.

Claims

1. A device for reflecting radar comprising a passive antenna means retained within a water and soil resistant enclosure means, wherein said antenna means is inductively loaded by coil means.

2. A device for reflecting radar comprising a passive antenna means retained within a water and soil resistant enclosure means, wherein said antenna means is inductively loaded by a loop means.

3. A device for reflecting radar comprising a passive antenna means retained within a water and soil resistant enclosure means, wherein said antenna means is capacitively loaded by disk means.

4. A device for reflecting radar comprising a passive antenna means retained within a water and soil resistant enclosure means, wherein said antenna means is capacitively loaded by a T-shaped head means.