THE EFFECT OF PAVEMENT MATERIALS AND REINFORCING STRUCTURES ON THE OPERATION OF AN ERGS ANTENNA

THE ELECTRICAL CHARACTERISTICS OF LOOP ANTENNAS HAVING SIZES SUITABLE FOR USE IN HIGHWAY COMMUNICATION, SIGNALING, AND VEHICLE DETECTION ARE DISCUSSED. FORMULAS ARE INCLUDED FOR CALCULATING PERFORMANCE, TUNING AND IMPEDANCE-MATCHING PARAMETERS. KNOWLEDGE OF THE SELF-INDUCTANCE OF A LOOP IS A PREREQUISITE TO CALCULATIONS OF TUNING AND MATCHING PARAMETERS. A PROCEDURE WAS DEVELOPED FOR CALCULATING THE INDUCTANCE OF A LOOP OF GIVEN PHYSICAL DIMENSIONS IN FREE SPACE, THEN MODIFYING THE RESULTS TO GIVE AN APPROXIMATE CORRECTION FOR THE EFFECT OF HIGHWAY REINFORCING MESH. THE IMPEDANCE, BANDWIDTH, AND LINE-MATCHING NETWORK PARAMETERS ARE DISCUSSED. FORTRAN-IV COMPUTER PROGRAMS FOR MAKING ALL NECESSARY CALCULATIONS ARE INCLUDED, AS ARE COMPUTED RESULTS COVERING THE EXPECTED RANGE OF MOST PARAMETERS. /FHWA/

• Corporate Authors:

  General Motors Corporation

  Warren, MI  United States  48090

  Michigan Department of State Highways

  State Highways Building, PO Drawer K
  Lansing, MI  United States  48904

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Publication Date: 1969-12

Subject/Index Terms

• TRT Terms: Antennas; Bandwidth; Calculation; Communications; Computer programs; Electrical impedance; Loops (Control systems); Material reinforcement; Materials; Mechanical impedance; Pavements; Signaling; Vehicle detectors
• Identifier Terms: FORTRAN (Computer program language)
• Uncontrolled Terms: Computation
• Old TRIS Terms: Impedance matching; Loop antennas; Loops (Electrical)
• Subject Areas: Highways; Materials; Operations and Traffic Management; Pavements;

Filing Info

• Accession Number: 00224967
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Contract Numbers: DOT-FH-11-6626
• Files: TRIS, USDOT, STATEDOT
• Created Date: Mar 7 1971 12:00AM