Investigation of Parasitic Loop Counterpoise Antennas and Their Application to VOR Systems.

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Abstract:

The radiation fields produced by conventional VOR and parastic loop counterpoise antennas were investigated both theoretically and experimentally. Theoretical expressions for the side band mode radiation fields produced by conventional VOR antennas were obtained by applying the concepts of geometrical theory of diffraction. Using similar techniques, expressions were obtained for both carrier and side band mode radiation fields produced by single parastic loop counterpoise antennas. It was found that for large separation distance between the parastic loops, the mutual coupling effects may be neglected during the evaluation of double parastic loop counterpoise antennas. Modified author abstract

Author(s):
Sengupta, Dipak L. ; Ferris, Joseph E.
Author Organization(s):
MICHIGAN UNIV ANN ARBOR DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
Descriptive Note:
Final rept. Aug 69-Oct 72,
Supplementary Note:
Includes errata sheet.
Pagination:
0158

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
UMICH-3051-1-F, FAA-RD-72-32
Contract/Grant Number(s):
FA-69-WA2085
Project Number(s):
FAA-330-001-03N
Monitor Series:
72-32
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Loop antennas, *Radio ranges, Very high frequency, Parasites, Antenna radiation patterns, Polarization
Field(s)/Group(s):
Electrical and Electronic Equipment
Keyword(s):
*VOR
Report Date:
1972 Dec 01