COMPACT CHAMBER FOR IMPEDANCE AND POWER TESTING OF VHF WHIP ANTENNAS.

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Abstract:

The report summarizes the accomplishments on a program to develop a compact test chamber suitable for production testing of VHF vehicular antennas. A compact test chamber consisting of a 12 foot long aluminum cylinder, 1 foot in diameter and lined with Eccosorb NZ-1 ferrite material was developed. This chamber was calibrated with respect to open-field antenna characteristics. Results from an extensive evaluation are presented which attest to the usefulness of the chamber in meeting production andor field test and alignment requirements. Investigations of the reflectivity characteristics of a number of absorbing materials, the effects of absorbing materials in the near-field of antennas, and the effects of ground plane size on antenna characteristics are described and results from these programs are presented. Author

Author(s):
Free, William R. ; Jenkins, Bernard M. ; Stuckey, Charles W.
Author Organization(s):
GEORGIA INST OF TECH ATLANTA ENGINEERING EXPERIMENT STATION
Descriptive Note:
Final rept. 1 Jul 67-1 Jul 68,
Pagination:
0111

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
GIT-A-1031-F, ECOM-0575-F
Contract/Grant Number(s):
DAAB07-67-C-0575
Monitor Series:
0575-F
 Subject Terms
Communities of Interest:
Air Platforms
Descriptor(s):
(*GROUND VEHICLE ANTENNAS, *TEST FACILITIES), VERY HIGH FREQUENCY, ELECTRICAL IMPEDANCE, FERRITES, ABSORPTION, CERAMIC MATERIALS, REFLECTIVITY, PERMEABILITY, ELECTROMAGNETIC RADIATION
Field(s)/Group(s):
Electrical and Electronic Equipment
Keyword(s):
WHIP ANTENNAS
Report Date:
1968 Oct 01