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  USA  48090

    Michigan Department of State Highways

    State Highways Building, PO Drawer K
    Lansing, MI  USA  48904

    Federal Highway Administration

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

Subject/Index Terms

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