ELECTRONIC EQUIPMENT INTERFERENCE CHARACTERISTICS-COMMUNICATION TYPE.
Quarterly technical rept. no. 10, 1 Oct-31 Dec 65,
GEORGIA INST OF TECH ATLANTA ENGINEERING EXPERIMENT STATION
Pagination or Media Count:
During the period covered by this report, investigations to extend the determination of the interference characteristics of U. S. Army communication equipment to include the case emission and susceptibility characteristics have continued. A hooded antenna technique has benn developed which shows considerable promise of satisfying the measurement requirements. This technique consists of mounting the test antenna in an absorber-lined hood which shields the probe in all but the desired direction. The major emphasis during this period has been on the development and evaluation of small, broadband, balanced, circularly-polarized antennas capable of being operated in an antenna hood of reasonable size. The development and evaluation of a d0 degree conical log-helix antenna and a short crossed bow-tie antenna are discussed. In addition, a short dipole antenna incorporating transistor emitter-followers was designed, fabricated, and evaluated during this reporting period. A program to investigate the feasibility of obtaining satisfactory operation of a conical log-helix antenna at lower frequencies by loading the antenna with carbonyl iron material was initiated during this period. The study to define the problems associated with near-field measurements has continued. Author
- Radiofrequency Wave Propagation
- Radio Communications