COMPACT CHAMBER FOR IMPEDANCE AND POWER TESTING OF VHF WHIP ANTENNAS.
Final rept. 1 Jul 67-1 Jul 68,
GEORGIA INST OF TECH ATLANTA ENGINEERING EXPERIMENT STATION
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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
- Electrical and Electronic Equipment